Throttles

There are 1024 different CVs that have been defined to handle many characteristics you might want to use for your locomotives. Your decoder manual has a complete listing of CVs that are available in specific decoders, what they do and suggested values for each CV. 1. Place the decoder equipped locomotive you want to program on the programming track. If you are using operations mode programming, the loco you want to program can be anywhere on the layout but it must have a decoder that is capable of ops mode programming installed. 2. Enter Program Mode by pressing the PROG ...

Selecting a locomotive-Safety Selection While unplugged, the DT402 (IR only) and DT402R (IR and Simplex Radio) operate as one-way transmitters. The DT402 and DT402R must be plugged into LocoNet to select an available locomotive address. After an address is selected, you can unplug from LocoNet and run the selected addresses with infrared or simplex radio. The throttle will automatically convert to infrared or simplex radio operation for all speed, direction, function, operations mode programming, and switch commands. The DT402D throttle has full duplex radio capabilities. Once the 402D has been configured to communicate with a UR92, the full functionality of ...

ENGINE SELECTIONPlace locomotive on the tracks controlled by the command station.1. Turn the throttle knob you want to run a loco on about a quarter turn (this lets the controller know you want to address that side.)2. Push the "Sel" Button3. Turn the throttle knob you have selected until the left numbers of the display match the locomotive number you wish to run. (No decoder = 00)4. Push "Sel" again.5. Repeat for the other throttle.If the number "33" appears it means that locomotive is unavailable (usually under the control of another throttle)These simplified DT100 operating instructions courtesy of Alan Mitchell

The DT402 Throttle will control up to 29 functions in walkaround and radio modes. When operating in IR Mode the DT402 series throttles will control up to 9 functions (F0-F8). The numeric keypad is always active in the normal Fn operation mode. The functions that are currently on for the active loco will be displayed on the top line of the DT402 display. The following figure shows an example of how the display looks when functions 0 and 1 are turned on for loco 1652 on the R Throttle. Controlling Functions F0-F12 1. Determine which throttle you want to control ...

The mode indicator, located at the bottom center of the LCD, shows the DT402’s current mode of operations. The DT402 automatically defaults to the Fn mode and returns to this mode whenever the EXIT Key is pressed. The Mode indicator usually shows what the numeric keys are associated with. For example, in Fn mode, any entry on the numeric keypad will affect functions. In Sw mode, keypad entries will change turnouts and in Lo mode, entries on the keypad will enter loco address numbers, etc. The following table provides a list of the Mode indication displayed, the mode name and ...

The Track Power indicator on your DT402 display shows the track power status. There is also a Track Status light on your Command Station. If the track power indicator is lit then track power is on. To turn the track power on or off: 1. Press the PWR key on the DT402. You will see a screen similar to the one below. You will now be able to toggle the track power on/off: 2. Press the N/- key to toggle the track power off. The Track Power Indicator on your DT402 and on your Command Station will go off. 3. ...

1. The DT402 handheld has two knobs called the L Throttle (Left) and the R Throttle (Right). The throttles are used for speed control, direction changes, and input of information for operation of your railroad. 2. The row of numbers (0-9) across the top of the display are the functions being used by the active locomotive throttle. 3. The larger numbers in the middle of the screen indicate the speed of the locomotives being controlled by the throttles. 4. The numbers at the bottom of the display are the locomotive addresses, and correspond to the digital decoder that is in ...

1. Plug the DT402 series throttle into any functioning Digitrax LocoNet System or other LocoNet compatible system and you are ready to get started! You can use any LocoNet jack on your system. 2. After you plug the DT402 into your LocoNet, you will briefly see the DT402 splash screen: This screen shows the throttle type: DT402I, DT402R or DT402D and software version number. It is displayed for a few seconds each time you power on the DT402. 3. The DT402D will then momentarily display the Duplex Group name and radio Channel. 4. Next you will see the power indicator ...

For normal tethered operation, the DT402 series throttles do not need a battery. To use your DT402/R/D as an infrared or radio throttle, you must install a 9 volt battery. When you install the battery, the throttle will report the battery voltage then show the last display screen. We recommend that you remove the battery from throttle if it is unplugged from the system to conserve battery life. The battery can be stored inside the DT402/R/D by removing the battery and putting it back in the battery compartment with the polarity reversed. Be careful here, see the diagram below for ...

Remember, the EXIT Key will take you back to the Fn Mode for Normal Loco Operations.

Join Your Throttle to the Duplex Group 1. Connect a DT402D Duplex Radio Throttle with an installed battery to the front RJ12 jack of the UR92 for about 2 seconds. 2. Disconnect the DT402D from the LocoNet jack. The DT402D will briefly display an 8 character Duplex Group name and the Channel number being used by the UR92 Group. The actual Duplex Group name is not important at this point, it is simply used by the DT402D to join this Duplex group on its particular Duplex channel (#11 through #26). 3. Now that the DT402D has joined the Duplex group, ...

CV29 controls many aspects of the locomotive, including its decoder address (including two or four digit address) , normal direction of travel (NDOT), whether the locomotive opperates at 28 speed steps or 128 and others. Some older Digitrax throttles use hexadecimal notation for programming.  This article is presented for the benefit of those who may still be using these throttles.  CAUTION: if you are NOT using a DT100 or DT200, please disregard this article to avoid confusion.The Addition Method The table below shows each switch and its value if it is on or off. Notice that if the switch is ...

I entered in a locomotive address by accident. Is there a way to clear the recall stack? The only way to clear a particular address that has been stored in the recall stack is to enter additional locomotive addresses so that the address in question "rolls off" the stack.

Programming the locomotive decoder with DT402 or DT400: Place the loco on the programming track 1.  Press the "PROG" key. 2. Make sure "Pg" is displayed in the bottom center of the display if you want to use Paged Programming Mode.   If not, press the PROG key until the programming mode you want to use is displayed.3. "AD2" should be displayed on the left side of the screen. 4. If you want a two digit address (01-127) use the right throttle knob and select the address you want to program into the loco.  If you want to program a 4 digit ...

To run two or more locomotives together as a multiple unit lash up or consist controlled by a single locomotive address: Place the two or more units you wish to MU on the track. 1. Select the TOP loco (the one that will control the consist) on the right hand throttle knob. 2. Select the loco to be added to the MU on the left hand throttle knob. 3. Make sure all the locos in the consist are traveling in the same physical direction on the track (both going to the left or to the right) 4. Press the "MU" key 5. Press the "+" key 6. ...

Selecting a locomotive address to run on your DT4001. Place the locomotive you want to run on the track.  Turn the throttle knob you want to run a loco on slightly counter clock-wise letting the controller know you want to address that side. 2. Press the "LOCO" key 3. Select the address of the loco by entering it using the numeric key pad.,4. Press the "LOCO" key to complete address selection.

The changing of the value in the CV of a DS54 is relatively easy if you follow the steps listed below. The difficult part is deciding which CV and CV value to program to achieve the desired effect. The following are step-by-step instructions for changing a DS54 configuration variable using a DT300 throttle: 1) Disconnect the DS54 from LocoNet, the auxiliary power supply, all inputs and all outputs. 2) Short the pins of the Enable Link. (see related article) 3) Connect the DS54 track inputs to the command station programming track. 4) Connect the yellow feedback adapter wire from any DS54 output (A, ...

Dispatching is a special way of offering a locomotive address to a UT1 or UT2 to run. The address is set up and then dispatched to the system to be acquired by the next throttle that presses its ACQUIRE Key. This is not the same as releasing a locomotive address from the system. Releasing an address clears it from the locomotive slot to make room for another locomotive address to be run by the command station. 1. Set the address selector switches to address “99” then press the “ACQ” button. 2. The Status LED will light green showing that you ...

Dispatching is a special feature incorporated in the LocoNet language to meet the needs of operators that wish to enforce a strict discipline in how operators gain access to locomotives during an operating session. Dispatching also lets you run consists with basic throttles that can't set up their own consists and run four digit addresses on basic throttles that only have two digit capability. It lets you have newcomers run trains on the layout without giving them access to the entire operation. When you dispatch a locomotive address or consist to your LocoNet system, you make it available to be ...

  To remove a loco address from a consist using a DT400 or DT402 Series throttle: Note: Duplex Radio throttles can remove locos from consists without the need to plug in to LocoNet.  Simplex Radio & infrared throttles must be plugged into LocoNet to remove loco addresses from consists. 1. On the L Throttle Knob, select the loco address that you want to remove from a consist. 2. Press the MU Key to enter consist mode. 3. Press the N - Key to remove the loco address from the consist. 4. The L Throttle automatically becomes active with the loco ...

Duplex Radio throttles (D throttles), do not have to be plugged in to add loco addresses to consists. Simplex Radio (R throttles) and Tethered/Infrared throttles must be plugged in to LocoNet to add loco addresses to consists.  To set up a consist using your DT400/DT402 Series throttle: 1. Select the loco address of the TOP loco on the R Throttle Knob. 2. Select the address of the loco you want to consist to the TOP loco on the L Throttle Knob. 3. Move the two locomotives into position. The locomotives can be headed in either direction. They can be adjacent to each other ...

Digitrax defines the TOP loco as the loco on the R Throttle Knob at the time when the MU add is performed.  This will be the locomotive address that controls the consist.

  Q:  I have read in some of the model magazines that the F2 button on the DT400 is a pressure sensitive playable whistle button. I have not noticed any difference in sound with the F2 button on my DT400. Is there some way to determine if this feature is present on my throttle? A:  Most Digitrax DT400 and all DT402 series throttles have the capability of implementing the playable whistle feature when used with Digitrax sound decoders.Prior to the release of Digitrax sound decoders this feature was considered as an experimental throttle feature and was not fully documented. Once Digitrax released ...

1. Choose which THROTTLE knob (L or R) you want to use to run a locomotive. Make it the active throttle by turning the throttle knob a 1/4 turn in either direction or by pressing down on the knob.2. Press the SEL key. The active throttle display will begin flashing the Loco Icon, the last loco address selected on the throttle and the Lo mode indicator. Sel loco will be displayed in the Text Area of the LCD display.3. To select a 4 digit address, rotate the L THROTTLE knob to dial up the first two digits (1000s and 100s) of ...

Q:  I have three engines lashed together. The sound is coming through . However when I turn the knob there is no response. The engine in the window is blinking and there are two stationary dots above A:  If you are using a DT300 series or DT400 series throttle, make sure that the Track Status Indicator dot in the upper right of the display just below the right throttle knob is on solid.  If it is not on at all Track Power is OFF.  If it is blinking, Track Status is in Idle and the throttle knobls will not move the locos.  To ...

The LOCO Key is used for selecting loco addresses on to the throttles so that the address is controlled by the throttle. Sometimes people call this “assigning locos to throttles.” DT100, DT200, & DT300 series throttles used the SEL or SET/SEL Keys for this throttle task.

Q: I have an older Super Chief system that came with DT100 throttles. They are both shot; one was accidentally pulled apart by an over zealous operator who forgot about the cable length and the other was ruined by me (I'm ashamed to admit) by spilling some super glue on several of the buttons. Can I upgrade to the current throttles or do you recommend I purchase the old DT100 units? A:  All Digitrax Starter Sets have LocoNet, including your older Chief series unit. This means that you can use any Digitrax throttle past and present.  Both of your damaged DT100 ...

How To Turn Track Power On and Off with the DT400 series throttle Turn track power on: Press the PWR Key, then press the Y + Key and the Track Power Indicator on your DT400 series display and on your command station will come on solid. If the track power indicator is blinking, press the Y+ key again to make it solid. Turn track power off: Press the PWR Key , then press the N - Key . The Track Power Indicator on your DT400 series and on your command station will go off. To Exit: Exit PWR mode by pressing the ...

Overview:To reset locomotive electronics to factory defaults the user must set CV08 to a value of 08. It is recommended that this procedure be performed on the dedicated service mode programming track using direct mode programming.* Note: This is the only programming procedure that we recommend using the programming track for. All other programming should be performed on the main track using Operations mode programming.Procedure:1. Place the DCC equipped locomotive on a dedicated service-mode programming track.* Note: The rails of this track should be connected to the PROG A & PROG B outputs on the DCS100 command station.2. Set the ...

Setting the clock rate to rate=00 will stop the fast clock for the entire system at the currently displayed time. Fast time will re-start when a new non-zero rate value is set.

  Note: DT300 radio or infrared versions must be plugged in to LocoNet to edit the fast clock settings.1. From Lo (Loco) mode, press the MODE key to change to Sw (Switch) mode.2. Press the FN/F0 key to change from Sw (Switch) mode to E (Editor) mode.3. The mode indicator in the center of the bottom row of the display will show Ec (Edit Clock Mode) and the text area will show the current system time in either a 12 or 24 hour format.4. Use the L and R THROTTLE knobs to dial up the desired start time. Use the ...

You can view the fast clock time even if you do not have the display option set to view the current fast clock time as a default display1. From Lo (Loco) mode, press the MODE key to change to Sw (Switch) mode.2. Press the FN/F0 key to change from Sw (Switch) mode to E (Editor) mode.3. The mode indicator in the center of the bottom row of the display will show Ec (Edit Clock Mode) and the text area will show the current system time in either a 12 or 24 hour format.4. Press the FN/F0 key twice more to ...

Many operators use a fast clock during operating sessions to simulate prototypical operations. Traditionally, this clock is on the wall and is set up to run at a faster than normal rate. LocoNet has its own networked fast clock for all Digitrax throttles connected to your system.To use the Fast clock feature of the DT300, you must be plugged into a Digitrax command station.When there is no activity on your DT300 for more than about 6 seconds, the DT300 will revert to the default display. Your DT300 was shipped with Lo (Loco) mode, showing the current speed of selected loco(s), ...

If an untethered DT300, operating as a tetherless throttle, detects no user throttle activity for about 3 minutes it will enter power save mode. The display will show: The throttle may flash the normal Lo (Loco) Mode screen about every 60 seconds. This happens when the throttle “pings” the system to let the command station know that it is still part of the system. This keeps the system from releasing that locomotive back to the system and making it available to be selected by another throttle.Any key strokes or movement of the throttle knobs will bring the DT300 out of ...

The DT300 is “InfraReady”. The DT300R can operate tetherless on radio or “infraReady.” Both units are also provided with a cable to attach into LocoNet when required. A 9 volt battery must be used to power both the DT300 and DT300R for tetherless operation. Using DT300 as a tetherless throttle is easy:1. For Infrared operation, plug in at least one Digitrax IR receiver (UR90 or UR91) to your working LocoNet. Because infrared signals are line of sight, more than one receiver may be necessary for optimal performance in your layout room. 2. For Radio operation, plug in at least one ...

Your DT300 has two infrared LEDs in the cable end of the throttle case. These emitters send infrared signals that can be used by LocoNet compatible Infrared receivers such as UR90, UR91 & UR92 to give you tetherless operation via infrared signals.

The MODE key is used to move from one operational mode to another on the DT300 throttle and to dispatch selected addresses or consists to make them available for use by other throttles in the system. Lo (Loco) mode is the DT300’s default mode since most of the time you are running locomotives.Press the MODE key to cycle from Lo (Loco) mode to Sw (Switch) mode to Mu (Multi Unit) mode and back to Lo, and so on.The current operation mode will show in the middle of the bottom row of the LCD display.Dispatch: To Dispatch or offer a locomotive ...

The SEL key, called the Select Key or Select/Set Key, is used for selecting loco addresses on to the throttles. This is sometimes referred to as “assigning locos to throttles.”This key is also used to select or complete (set) an operation.

The STOP key has two uses: as an emergency stop for the locos on the layout and as a shift key used in conjunction with other keys.Emergency Stop keyThe factory setting for the STOP key is for Local Emergency Stop which stops just the locos controlled by the two throttle knobs on the DT300. The STOP key can also be set for Global Emergency Stop which will stop all of the locos on the layout.  This is done by setting throttle option switches.Using the Stop key as a Shift KeyThe STOP key is also used as a shift key in ...

Track Power IndicatorThis very small star shaped dot located just above the bar graph display in the LCD on the right side indicates the status of the track power.No indicator = System track power is OFFIndicator On Steady = System track power is ONBlinking Indicator = System is in “STOP” and track power is ON Tetherless IndicatorThe tetherless indicator shows when your throttle is using either infrared or radio communications.L and R Semaphores-Cab SignalingThe L and R Semaphores are used when cab signaling is implemented on the layout. The L and R Semaphores will display the following:

  Whether functions 0-8 are on or off for the currently active loco address is displayed on the top line of the LCD. The number for the activated functions for the active throttle (the one with blinking smoke) are displayed. Up to eight functions can be controlled by the DT300. To view the function status of either throttle, simply press the throttle knob to display the active functions for that throttle.

  Each throttle has a bar graph located just above the text area of the LCD. Each of these indicates the speed setting of the L THROTTLE and R THROTTLE graphically from a single dot (0% throttle) to 20 dots (full throttle). This is useful when the text area is showing information other than speed.

  The decoder address selected on the L THROTTLE is displayed on the bottom line of the LCD to the left of the Mode Indicator. The decoder address selected on the R THROTTLE is displayed to the right of the Mode Indicator. The address can show as either the 2-digit or the 4-digit decoder address. If no address is selected the display will show “SEL.” If a 2-digit address is selected (00-127), the display will show two or three digits (25 is shown in the example). If a 4-digit address is selected (0128 -9983), the display will show all four ...

The mode indicator, located at the bottom center of the LCD, shows the DT300’s current mode of operations. The DT300 automatically defaults to the Lo (Loco) mode and returns to this mode after about 6 seconds of inactivity in Mu (Multi Unit) or Sw (Switch) modes.

The Text Area of the LCD consists of the eight characters in the middle line of the display. This is where information like locomotive speed, decoder status, turnout position, fast clock, text prompts, messages and programming data are displayed.

The direction indicators are located in the LCD Display of the DT300 directly below the Loco Icon. There are separate indicators for the L (left) and R (right) throttles. If the arrow points to the front of the loco, the throttle is in the forward direction. If the arrow points to the back of the loco, then the throttle is in the reverse direction. If there is not a locomotive selected on a throttle the loco icon and direction arrow will not appear. Note: These direction indicators are for DCC equipped locos only. They will indicate direction based on the ...

  The Smoke Icon is located just above each Loco Icon and appears with the Loco Icon when an address has been selected on the throttle. When a loco is selected on a throttle, the Loco with Smoke icon will appear below the THROTTLE KNOB and beside the address of that loco. If no address is selected, there will be no Loco icon and the address area will show SEL. A Blinking Smoke icon indicates that the THROTTLE is currently active. Since both throttles must share the keypad, only one at a time can have access to the keypad and ...

  Many prototype trains use multiple locomotives to provide the necessary power to pull or push the train. This practice is called Multiple Unit consisting, usually shortened to MU or consisting. The DT300 Throttle can provide three methods of consist control:1. The Basic Consisting method, which is not commonly used, is to program all the locomotives in a consist to the same address and run them on one throttle. In this case all the locomotives must be headed in the same direction, head to tail, head to tail, head to tail. If you use decoders that allow you to set ...

  To control the speed of a locomotive with your DT300:1. Activate the loco address on either throttle by either pressing the C/R key or the R THROTTLE knob to gain control of the loco on the right side of the display and the L/t key or the L THROTTLE knob to gain control of the loco on the left.2. Turn the THROTTLE knob clockwise to increase speed and counterclockwise to decrease speed or3. Use the Y/+ and N/- keys to increase and decrease speed. The percentage of full speed will be displayed in the text line of the display ...

When the command station is sending commands to a loco address that is in-use on one of the DT300's throttles and that address is being changed by another throttle or computer, it will cause the DT300 to “click” every time it sees a remote throttle change its locomotive settings. If that locomotive is in the active throttle, its speed display will also show the changes. This is called slot following. This allows two DT throttles to run a single locomotive address with both throttles being able to send commands to the loco. Both throttles will show the current speed and direction of ...

When you are finished running a locomotive address, you should release it from your throttle so that the locomotive address is available for other throttles to select and run.  This also clears a slot for a different address to be used in the system.Radio and infrared throttles must be plugged in to LocoNet to release an address from your throttle. You can disable this safety feature by setting your DT300’s OP#3 to one of the values that allows tetherless release. To release an address from a throttle:1. Use the THROTTLE knob to select the loco and make its speed zero. This step ...

Stealing an Address that is in use by another throttle If you try to select a loco address that is already selected on another throttle the DT300 will display “Steal?=Y” in the text area. This is a safety interlock to prevent operators from taking control of locos that are already selected on other throttles. Occasionally it is necessary to override this interlock to gain control of a loco that is “lost” for whatever reason. This override is called stealing and can result in having a single loco address selected on two different throttles at the same time.To Steal An Address With ...

  To run a locomotive, you must first select it.1. Choose which THROTTLE (L or R) you want to use to run a locomotive. Make it the active throttle by turning it a 1/4 turn in either direction or by pressing down on the knob. If there is no active address selected to the throttle, as shown above, SEL will blink to let you know that the throttle is ready to select an address.2. Press the SEL key. The active throttle display will begin flashing the Loco Icon, the last loco address selected on the throttle and the Lo mode ...

If a throttle knob does not have a locomotive address selected when you make the throttle active by turning or pressing the L or R THROTTLE knob or L/t or c/R (direction) key, a flashing “SEL” will appear in place of the locomotive address in the LCD display. This is a prompt for you to select a locomotive address on that throttle.

Digitrax Command Stations use three address ranges available for addressing and programming locomotives. You can use all three address ranges at any time and in any combination you choose.Address 00: The analog address used to run locomotives without decoders. All analog locos (those with no decoders) active on the layout will respond to the speed and direction commands issued to address 00.2 digit addressing: Addresses in the range of 01 through 127. Also called short addressing, 2 digit addressing can be used with any DCC decoder, shown as the two or three digits, with no leading zero, of the address ...

Each DCC decoder that is installed in a locomotive is assigned a unique address. To select a locomotive and run it on either throttle, you must know the address assigned to the decoder. Digitrax decoders are set up at the factory with the “default” digital address of 03. This means that when you take a Digitrax decoder out of the package and install it in your loco, you can select address 03 on your throttle and run the decoder. The first Configuration Variable (CV) programmed by most DCC users is the decoder’s address since it is not very useful to ...

Does your throttle say slot=max ?This means that the system's capacity to handle operating locos is full. The DCS100 can run up to 22 or 120 addresses at the same time. If you have the slot=max message, be sure that all locos that are not running are released from throttles or set DCS100 OpSw 44 to closed to increase the number of address slots available to 120. The DCS100 command station that comes with all Genesis, Empire Builder and Chief series starter sets are set with a factory default of 22 slots.  So, once you begin to operate significantly more locos, you may need to ...

Option # 4 sets the throttle ID of your throttle. Each throttle in your LocoNet system can have its own unique ID to support advanced LocoNet functionality. Products that use this feature will usually require each throttle in your system to have a unique ID.We recommend changing this ID only when specifically directed to do so by the manufacturer of a LocoNet compatible product that requires unique throttle IDs for operation. You may use any ID in the range of values x00-x7F (hex) and you must be sure that every throttle in your system has a unique ID #.

The factory setting for the DT300 is Op#2=x23 with 128 step decoder setting and IR (infrared) tetherless operation enabled.The factory setting for the DT300R (radio) is Op#2=x03 with 128 speed step decoder operation and tetherless operation for both radio and IR enabled.Throttle Default Decoder OperationEach DT300 can be set up to operate new decoders selected by them as any decoder status code you choose. New decoders are defined as decoders that have not been selected in your system. Your DT300 is set to expect to operate mostly decoders that are 128 speed step capable, so when a new decoder is ...

  The DT300 can be used to access your systems Option Switches (OpSw):1. Release all locos selected on the throttle before you begin.2. Unplug the DT300 from LocoNet.3. Press and hold the SEL key while plugging the DT300 back into LocoNet.n.b.You can also enter option setting by holding down the SEL key while installing a battery in your DT300 while it is not connected to LocoNet.Your throttle will display a screen similar to this: 4. The DT300 display will show Op#1=x## where the x## represents the hexadecimal number of the current setting for Op#1. The default setting for Op#1 is ...

The factory setting for Op#3 for all DT300 throttles is Op#3=x01.LCD Backlight Brightness SettingThe backlight intensity can be set for off, low, medium or high intensity. The brightness of the backlight affects battery life, the brighter the LCD, the shorter the battery life.Note: When the DT300 is untethered, the backlight automatically reduces brightness by one setting to conserve battery power.Fast Clock FormatThe fast clock can be set up to display either 12 hour format or 24 hour format. The factory setting is 12 hour format.Recall Stack DepthThe DT300 recall feature can be set to keep a list of the last ...

The factory setting for Op#1 for all DT300 throttles is Op#1=x01. This option controls Tracking, Fast Clock Display, Key/Knob Clicks and Stop, local/global.Ballistic or Straight Line TrackingWith ballistic tracking, the faster you rotate the throttle knob, the faster the data changes in the throttle. When ballistic tracking is enabled so are typematic keys. With typematic keys, when you press and hold the Y/+ or N/- keys, the values will continue to increase or decrease without having to do a separate key press for each increment. Your DT300 was shipped with ballistic tracking as the factory default setting.With straight line tracking ...

The DT300 Throttle has two throttle knobs, allowing you to select and control two locomotives.  We refer to the throttle knob on the left side as the L THROTTLE and the throttle knob on the right side as the R THROTTLE. This corresponds to the L and R labels that appear on the DT300 near the throttle knobs.The throttle knobs on the DT300 use “encoders” to control speed and direction of the locomotive. The encoder can be pressed or rotated to “activate” the throttle. Pressing the throttle knob once activates that encoder. Pressing the knob twice will change the direction ...

The DT300 Throttle is a full-function hand held controller that includes 2 independent throttles and a common keypad to control up to 9 functions (0-8), turnouts and programming. The DT300 Throttle does not require a battery in normal walk-around operation, but if you do not install a battery, the throttle display will be off while you are unplugged from the system. The DT300 requires a 9 Volt battery for infrared operation.   The DT300R requires a 9 Volt battery for radio operation.

There are two throttles in the "300" series: The DT300 connects into LocoNet by a 7' cable. The cable allows flexibility in movement. The throttle can be disconnected to move to another point on the layout and reconnected to LocoNet without losing the acquired locomotive. The unit will also work wireless using Infrared signals when used with either a UR90 or UR91 or UR92.   The DT300R is a simplex radio control throttle with a 1' cable to connect into LocoNet. The throttle is plugged into LocoNet to select a locomotive or to program a locomotive and then can be disconnected ...

  The DT300 controls devices and operations in different modes:

  Digitrax UT4D Throttle Operating Instructions by Dan Bourque   v1.0 Selecting a locomotive or consist 1.         Dial the 4-digit locomotive address into the “LOCO ADDRESS” dials             - For a consist, the address will normally be the lead locomotive             - For a 3-digit locomotive number, use “0” for the first digit 2.         Press the “SEL” key, the ST light on the throttle should flash green 3.         Move the direction selector on the throttle to either “R” or “F” 4.         Move the speed knob until train moves 5.         For headlight, press the “F0” key (“F3” will ...

MU OPERATION Place the two units you wish to MU on the tracks controlled by the command station 1. Select the lead locomotive on the right side throttle  2. Select the engine to be added on the left side throttle 3. Make sure all the locomotives in the consist are traveling in the same physical direction. The direction lights may or may not be the same (green or red) depending on the orientation of the locomotives in the consist (head to head or tail to tail). 4. Push "mode" Button 2 times 5. The display should now show both locomotive numbers. 6. ...

Can I add Radio and IR to my Big Boy?Yes.Adding radio and/or IR to Big Boy is the same as adding it to any other existing Digitrax layout or Digitrax Starter Set. Digitrax offers InfraRed, Duplex Radio and Simplex Radio systems for wireless operation. Any combination of these wireless methods can be used on the same layout at the same time.Infra Red Wireless OperationAll current Digitrax throttles are Infrared capable (InfraReady) in that they come from the factory equipped with the IR emitters required to send IR information to LocoNet. To use this functionality, you only need to add one ...

  Can I add Radio and IR to my Zephyr Xtra?Yes.Adding radio and/or IR to Zephyr and Zephyr Xtra is the same as adding it to any other existing Digitrax layout or Digitrax Starter Set. Digitrax offers InfraRed, Duplex Radio and Simplex Radio systems for wireless operation.  Any combination of these wireless methods can be used on the same layout at the same time.Infra Red Wireless OperationAll current Digitrax throttles are Infrared capable (InfraReady) in that they come from the factory equipped with the IR emitters required to send IR information to LocoNet.  To use this functionality, you only need to ...

Stealing, or "sharing" is defined as acquiring control of a loco address that is being used by someone else on another throttle. To ‘Steal’ a loco:1. Unplug the UT4 from the LocoNet port.2. Dial up the address of the loco you want to steal.3. Press and hold the ‘STEAL’ key while plugging the throttle into the LocoNet jack. Note: To steal or dispatch another loco, you must unplug the UT4 and repeat the above sequence.

UT4 Sleep Mode is used to extend throttle battery life; it does not charge the throttle batteries but it does reduce the draw on the throttles' batteries.To put the UT4 to sleep, press and hold any function key down and turn any address selector to the next digit. The throttle will go into sleep mode. The UT4 will release the address that was selected and the status light will briefly turn red. If the unit is plugged into LocoNet port you can unplug the throttle and the throttle will then be in sleep mode until plugged back in to LocoNet ...

The UT4 comes InfraReady for layouts that are equipped with one or more UR90 infrared receivers. For Infrared operation:1. Install one or more UR90 infrared receivers on your layout.  These should be connected to LocoNet and powered.  If you have UR92s and/or UR91s present on the layout, these also support infrared operation.  You will need enough infrared receivers installed on the layout so that the throttles you use can "see" the receivers since the transmission is line of sight.  You may also encounter problems in rooms where there are large windows that would interfere with the transmission.2. Install a 9 ...

UT4 Function Control Keys and How they WorkThere are 8 physical keys used to control functions F0-F12 on the UT4 throttle. F1 through F6 and F7-F12 share the same keys.  You will see F1-F6 in black print and F7-F12 in blue print to remind you that you will need to use the SHIFT key to access F7-F12. To use functions F7-F12 you must press and hold down the SHIFT key on the lower left row of the throttle as you press the F7 through F12 keys to activate any functions available on those functions. All the UT4 functions work like other Digitrax throttles. ...

Dispatching is the process of releasing a loco so that another user can take control of it. To release, or dispatch, a loco under current UT4 control:1. Unplug the UT4 from the LocoNet port.2. Press and hold the DISP (Dispatch) key.3. Plug the throttle back into a LocoNet port.

My club uses UT4R radio throttles. At the end of the session they ask that the battery be reversed in the throttle housing to "extend battery life". This effectively reverses the polarity of the battery in the throttle. Is this step necessary? Is there any drain on the battery when the throttle is not in use? If there is a drain, should the battery then be removed for storage? So my question is: How should you store a UT4R so as not to drain the battery when the throttle is not being used? The throttle batteries will indeed drain if ...

Changing the Direction switch on the top left hand side of the UT4 from Forward (F) to the center Brake (B) position causes the loco to stop at the locomotive’s programmed deceleration rate. Changing quickly from ‘F’ to ‘R’ (Reverse) causes the loco to stop at the programmed deceleration rate, then reverse direction and accelerate at the locomotive’s programmed acceleration rate.

If you are NOT plugged into a LocoNet port1. Use the 4 rotary address selector knobs on your UT4 to dial up the 2 or 4 digit address of the locomotive you want to run.  To enter a 2-digit addresses, set the first two selector knobs to 0 and enter the two digit address on the 2 address selector knobs on the right hand side of the throttle (for example 0025).2. Plug the UT4 into any LocoNet port and automatic selection occurs.3. A Green Status light confirms that selection has been done successfully - You’re off and running!4. A Red Status light means the loco is ...

Will the UT4R operate on an Infrared System also as well as a radio frequency? Yes, the UT4R & DT400R will operate on IR systems as well as radio systems.

The first Digitrax system to use LocoNet was Big Boy. Each Big Boy system came with a LocoNet Adapter 1 (LA1) or LocoNet Adapter 2 (LA2). Documentation for these units was minimal, but is included here. LA1 LA-1 came with a simple card: LA-1 LocoNet Adapter Use this cable to connect your DB100 to your DT200 command station unit and to your LocoNet command bus. The LA-1 allows you to connect more than one throttle to your Big Boy System. You only need one LA-1 in a Big Boy System. If you are upgrading to Big Boy from Challenger, you ...

Can the UT4 or UT4R be set to have its own unique throttle ID like the DT300/DT300R and DT400/DT400R? There are several uses for this functionality, including it being useful when looking at logs of LocoNet traffic from PanelPro/DecoderPro when trying to diagnose problems and identify potentially faulty throttles. This from A. J.: Each UT4 has a unique ID programmed as serialization at manufacture, and is distinguishable from DT400's etc. The UT4 has values of EX1 as {x74/x75} in the LocoNet messages with EX2 equal to the unit factory serial number.

Even though an individual locomotive is part of a consist and you can’t control its speed and direction separately from the consist, you can still control its function outputs independently as follows:1. Press the LOCO Key and select the address of the locomotive that is a part of consist for which you want to control functions.2. Press the LOCO Key again to select the loco address to your throttle. The speed value will show “cn” to remind you that you can only control functions on the loco and not its speed.3. Use the steps described above to turn on or ...

The DT400 can control Functions 1 - 12.Note: DT400 can access F0-F12 when used with the DCS50 Zephyr or DCS100 Super Chief command station. DT400 can only access F0-F8 when used with a DB150 Super Empire Builder command station.To enter Fn (function) mode:1. Determine which throttle you want to control functions on and make it the active throttle by single clicking the throttle knob or by turning the throttle knob a couple of clicks.2. DT400’s numeric keypad is always active in function mode during normal loco operations. When the mode indicator on your DT400 shows Fn, simply press any number ...

DT400 Series Throttles - Make F2 Latching or Non-latching The F2 button on the DT400 is meant to control locomotive whistles and horns, so it is configured to be "momentary" or non-latching.  This means that the key will activate the horn or other function for as long as you hold the key down and stop when it is released. This was done to facilitate the use of a playable whistle in sound decoders. If you are not using F2 for this purpose on your layout, you can change the way the F2 key on the throttle works so that it latches on and ...

DT402 & DT400 Series Throttles Locomotive Directrion Control There are two ways to change the direction of the locomotive address from the DT402 and DT400 Series Throttles:Double click the Throttle Knob to reverse the direction of a locomotive running on that throttle:1. Double click the Throttle knob that is controlling the locomotive. Press down on the knob quickly two times (2 distinct key presses within 1/2 second).2. The locomotive selected on that throttle will change direction.3. Repeat the process to reverse again, etc.4. Double clicking the R Throttle knob will reverse only the locomotive running on that throttle. Double click ...

What happens when I select a loco that is currently running at a different speed than the throttle is set to? example... running loco 'a' at half speed then switch to loco 'b' does loco 'b' suddenly change speed to half throttle? (which is the last position the knob was indicating for loco 'a' this would make for a nice crash if I planned on backing loco 'b' out of a siding, and it goes forward instead at 50% right into a bumper) You're right, when switching the loco 'b', the newly selected locomotive would be commanded to operate at ...

DT402 & DT400 series throttles have two ways of doing an emergency stop. When you use Emergency Stop, the deceleration rate programmed into the decoder will not have an effect and the stop will be immediate.Local Stop Press the EMRG STOP Key to stop the loco that is active in the throttle display. To resume operation, use the throttle knob associated with that address to increase the loco’s speed.Press the EMRG STOP Key again to stop the loco that is associated with the other throttle on the DT400 or DT402 series throttle. To resume operation, each operator must use their throttle to set ...

Bring Your Locomotive to a Compete Stop Turn the Throttle Knob that the loco address is selected on counterclockwise until the speed display shows 00 and the loco stops moving. This lets you slow down your loco and stop it in a prototypical manner.If you have set up deceleration for the loco and you move the throttle knob to 0% speed, your loco will slow down and come to a stop at the programmed deceleration CV value.   We strongly recommend that you run your locos with the factory default of no deceleration until you are familiar with your system. If ...

DT402 & DT400 Series Throttle - Locomotive Speed Control To control the speed of a locomotive:1. Select the loco address on either throttle2. Turn the throttle knob clockwise to increase speed and counterclockwise to decrease speed or3. Use the Y + & N- Keys to increase and decrease speed.The % of full speed will be displayed in the text line of the display on the L or R side depending on which throttle is controlling the loco. The % of full speed will also be displayed on the bar graph above the text area in the display.If a loco address is ...

Stealing is  also known as Forcing An Address Selection or SharingIf you try to select a loco address that is already selected on another throttle the DT400 will display “Steal?=Y” in the text area. This is a safety interlock to prevent operators from taking control of locos that are already selected on other throttles. Occasionally it is necessary to override this interlock to gain control of a loco that is “lost” for whatever reason. This override is called stealing & can result in having a single loco address selected on two different throttles at the same time.To steal an address ...

DT402 & DT400 Series Throttle-Locomotive Recall The DT402 & DT400 Series Throttles store the last 4, 8,or 16 unique loco addresses used by the throttle in a recall stack; your throttle defaults to a 4 address recall stack.  Users often discover this feature when taking their throttle for use on another Digitrax railroad; they plug their throttle into the new LocoNet and discover their own locomotive addresses are still in their throttle.  The presence of stored locomotive addresses may make operations on your railroad easier.For example if you have your throttle set up for an 8 deep recall stack and the last 8 ...

DT402 & DT400 Selecting and Running A Locomotive If a throttle knob does not have a locomotive selected when you make it active by turning or pressing the L or R Throttle knob or Reverse Key, flashing “SEL” will appear in place of the locomotive address in the LCD display. This is a prompt for you to select a locomotive on that throttle. 1. Choose which Throttle (L or R) you want to use to run a locomotive.Make it the active throttle by turning it a 1/4 turn in either direction or by single clicking the throttle knob. If there ...

DT402 & DT400 Series Throttles Track Power ON and OFF When track power is on: The Throttle's Track Power Indicator is on solid (small dot in the top line on the right side of the LCD)   Command Station TRACK STATUS indicator is lit   and Command Station OFF LINE indicator is off To turn track power on: Press the PWR Key and the LCD will display a screen similar to this: Press the Y + Key to turn on track power. Press the PWR Key again to exit Power On/Off Mode. You may also press any other key to go directly ...

There is a numeric keypad on the DT402/DT400 throttle.  The numeric keys on the keypad are primarily related to the throttle mode shown in the LCD’s mode indicator area, but can be used for numeric entry and function control in other modes. For example, when the command station is in the Function Mode Fn, the numeric keys are used for function control. When the command station is in the Locomotive Mode,Lo, the numeric keys are used to enter loco addresses. When the command station is in the Switch Mode is Sw, the numeric keys are used to enter switch addresses.In ...

Your DT402/DT400 throttle comes from the factory set for “Local” Stop. When you press the EMRG STOP Key , the loco address that is active on your display (the one with the blinking smoke) will stop.When you press the EMRG STOP Key again, the loco address on the other throttle of your DT400 will stop.You can use the OPTN t Key to change the EMRG STOP to “Global” Stop.With global stop option enabled, pressing the EMRG STOP Key will stop all locos on the layout and you will see the throttle's track power indicator blinking on and off.To resume operations, press ...

The ENTER key is used to complete the current throttle task and return to Fn mode for normal operations.

The EXIT Key is used to exit the current throttle task without making changes. Pressing this key will usually return the DT402 and DT400 series throttles to Fn mode for regular locomotive operation.

The CLOC, "c" Key is used to toggle between displaying and not displaying the current fast clock time. It is also used to issue c (closed) commands when the throttle is in Switch mode.In the case of turnout control:c=closed, when a "c" command is sent, the turnout is set for the main line with routing through the straight leg of the turnout.

The OPTN t Key is used to enter the Option Mode to set throttle and system options. It is also used to issue t (thrown) commands when the throttle is in Switch mode.In the case of turnout control:t=thrown, when a "t" command is sent, the turnout is set for the diverging route through the curved leg.

The PWR Key is used to enter power mode for turning layout power on and off. Once you press this key, you will be prompted to use the Y+ key to turn power on or the N- Key to turn power off.  The PWR Key is also used to turn on and off the flashlight feature. The flashlight LED will be on as long as you hold down the PWR Key.

The BACK key lets you go back one step.

The FIND Key is used in conjunction with a layout instrumented for Digitrax Transponding and locos or cars equipped with transponders to find the location of those pieces of rolling stock on the layout.

The EDIT Key is used to enter the Edit Mode for editing the fast clock, routes, signaling, etc. It is also used to status edit decoders while in locomotive address selection mode.

The DISP Key is used both for displaying programming information and dispatching loco addresses.

With ballistic tracking, the faster you increase or decrease turning the throttle knob, the faster the data changes in the throttle. When ballistic tracking is enabled, so are typematic keys. With typematic keys, when you press and hold the Y +or N - Keys, the values will continue to increase or decrease without having to do a separate key press for each increment.With straight line tracking each movement of the throttle knob causes a fixed rate of change. When you use straight line tracking, typematic key action is off. This means that you must press each key once to cause ...

The DT402/DT400 Throttles include two multipurpose keys.The Y + and N - Keys are used: To turn track power on and off   To increase or decrease loco speed   To link and unlink locos during MU’ing   To accomplish tasks using system editors These two keys can be set up to act in two different ways:Repeating: so that if you hold a key down it will continue to increase or decrease step by step until you release the key. This option is active when your throttle is set up for ballistic tracking. Your DT402/DT402 throttles are shipped from the factory ...

The L & R Direction Reverse Keys change the direction of travel of the loco on the related throttle when the throttle is in Fn (Normal Operation) Mode. The R Direction Reverse Key changes direction of the address on the “R” or Right Throttle. The L Direction Reverse Key changes direction of the address on the “L” or Left Throttle.  You can also reverse the locomotive by double clicking the throttle knob.

The SWCH Key is used for entering switch control mode. Once this key is pressed, you will be prompted to select a switch address and issue a thrown or closed command. Switch control mode is used in normal operation for operating turnout machines and in set up mode for setting up option switches in the throttle and command station.

The MU Key is used to enter consist or multiple unit (MU) set up mode.Once the MU Key is pressed, you will be prompted by the throttle to use the Y+ Or N- Keys to add locos to or remove locos from consists (MUs)

The FUNC Key is used to enter function control mode. Function control mode is the default mode for normal locomotive operation with the DT402/DT400 Series Throttles. Press this key during any throttle task to return to normal loco operation mode with function controls active on the numeric keypad.

The L & R Semaphore Indicators are used when cab signaling is implemented on the layout. These semaphores offer three indications:

The tetherless indicator shows when your throttle is using either infrared or radio communications.

The DT400 display LCD includes a small star shaped dot which indicates the status of the track power. No indicator = System track power is OFF (Press PWR followed by N-)Indicator On Steady = System track power is ON (Press PWR followed by Y+)Blinking Indicator = System is in “STOP” and track power is ON (Press PWR followed by Y+ and Y+ again)

The DT400 includes an LCD information display.  This display includes information about the active functions of the selected locomotive. The functions 0-12 which on or off for the currently active loco address are displayed on the top line of the LCD. The functions for the active throttle (the one with blinking smoke) are displayed. To view the function status of either throttle, simply press the throttle knob to display the active functions for that throttle.

Each throttle has a bar graph located above the text area of the LCD. Each bar graph indicates the speed setting of the L & R Throttles graphically from a single dot (0% throttle) to 20 dots (full throttle).  This is useful when the text area is showing information other than speed.

The Text Area of the LCD consists of the eight characters in the middle line of the display. This is where information like locomotive speed, decoder status, turnout position, fast clock, text prompts, messages and programming data are displayed.

The DT402/DT402 series throttles have displays which give you information about the performance of your railroad.The decoder address selected on the L Throttle is displayed on the bottom line of the LCD to the left of the Mode Indicator. The decoder address selected on the R Throttle is displayed on to the right of the Mode Indicator. The address can show as either the 2-digit or the 4-digit decoder address. If no address is selected the display will show “SEL.” If a 2-digit address is selected (00-127), the display will show two or three digits. If a 4-digit address is ...

The mode indicator, located at the bottom center of the LCD, shows the DT402/DT400 series throttles' current mode of operations. The DT400 automatically defaults to the Fn mode & returns to this mode whenever the EXIT Key is pressed. The Mode indicator usually shows what the numeric keys are associated with. For example, in Fn mode, any entry on the numeric keypad will affect functions. In Sw mode, keypad entries will change turnouts and in Lo mode, entries on the keypad will enter loco address numbers, etc.

The Smoke Icon is located just above the Loco Icon. Both the L & R Throttles have a smoke icon. If a loco is selected on either throttle, the Loco icon will appear beside the address of that loco. If nothing is selected, there will be no Loco icon and the address area will show SEL. The blinking smoke icon indicates which throttle is currently active (having its function states displayed in the top line of the LCD). Since both throttles must share the keypad, only one at a time can have access to the keypad and function controls. The ...

On the DT402 and DT400 series throttles, the direction indicators are located in the LCD Display directly below the Loco Icon. There are separate indicators for the L (left) and R (right) throttles. If the arrow points to the front of the loco, the throttle is in the forward direction. If the arrow points to the back of the loco, then the throttle is in the reverse direction. If there is not a locomotive selected on a throttle the loco icon will not appear.Note: These direction indicators are for DCC equipped locos only. They will indicate direction based on the ...

On The DT400 and DT402 series throttles, the L & R Loco Icons are used to indicate whether an address is available for selection. A blinking loco icon means that the address is available for selection and a steady loco icon means that the loco address is currently selected or in use by another throttle.

The DT400 has an informational liquid crystal display (LCD).The display shows: Mode Indicator   Track Power Indicator   Tetherless Indicator   Text Area   Throttle Addresses (L & R)   Throttle Direction (L & R)   Loco Icons (L & R)   Smoke Icons (L & R)   Functions 0 - 12, active throttle only   Bar Graph (L & R)   Semaphore Indicator (L & R), not currently implemented

Digitgrax refers to the throttle knob on the left side as the L Throttle and the throttle knob on the right side as the R Throttle. This corresponds to the L & R that appears on the throttle. The throttle knobs on the DT400 use “encoders.” They give very smooth, fine speed control. In 128 speed step mode it takes four complete rotations of the knob to go from stop to full speed. When you select a locomotive that is already moving on either throttle knob, that throttle will continue to run the locomotive at the same speed and in the ...

The DT400 and DT400R are full function hand held throttles that include 2 independent throttles and a common keypad to control up to 13 functions (0-12), turnouts and programming.The DT400 offers wireless infrared remote operation used in conjunction with a UR90 or UR91 Receiver Unit.  The DT400 requires a 9 volt battery for infrared operation; the DT400 does not require a battery in normal walkaround operation. If you do not install a battery, the throttle display will be off while you are unplugged from the system. The DT400R offers wireless radio remote operation when used in conjunction with a UR91 ...

How to Select and Run a DCC Locomotive Using a DT402 or DT400 Series Throttle 1. Activate the throttle's left throttle knob “L” by turning it a 1/4 turn in either direction or by clicking the throttle knob once. The left side address will begin flashing. If nothing is selected on this throttle it will flash “SEL”.2. Press the LOCO Key. The left side of the display will begin flashing. The illustration above shows the LCD display just after you press the LOCO Key to select an address on the L Throttle when nothing has been selected on that throttle before and ...

'It is possible to operate one conventional DC locomotive at Address 00.  In many cases, this is the first locomotive that beginners use when they first get their command control system.  In other cases, this locomotive is one which cannot be easily converted to DCC.  Regardless, although it is possible to use your Digitrax system in this way, it is not a recommended approach.1. Place an analog locomotive (one without a decoder) on your layout.  While the analog loco is sitting still, you will hear the characteristic “singing” caused by the DCC track signal when it is applied to analog ...

The DT400 and DT400R are full function hand held throttles that include 2 independent throttles and a common keypad to control, up to 13 functions (0-12), turnouts and programming.

The DT402 & DT402's screens are an LCD (Liquid Crystal Display) that is designed to show you what you are controlling with the throttle.  It also facilitates programming and other features of the LocoNet system. 1. The handheld has two throttles called the left throttle (L) and the right throttle (R).2. There are two direction indicators. One for the L throttle and one for the R Throttle. If the direction indicator is lit, and there is smoke over the loco icon there is an address selected on that throttle.3. The direction indicator with blinking smoke indicates which throttle is currently active. The ...

1. Plug the DT402 & DT400 series throttle into any functioning Digitrax LocoNet System or other LocoNet compatible system and you are ready to go! You can use any LocoNet jack on your system.2. First, you will see the DT402 or DT400 version number screen: This screen shows the throttle's software version number. It is displayed for a few seconds each time you power on the throttle.3. Next you will see the power indicator screen: This screen indicates the power available to the throttle. When you are plugged in to LocoNet, this value will be between 9 & 15 volts. When you ...

The track power indicator on your DT400 shows whether track power is on or off. If the track power indicator is lit then track power is on. There is also a Track Power indicator on your command station.To Turn Track Power On:If the Track Power Indicator is not lit, turn track power on as follows:1.  Press the PWR Key2.  Press the Y + Key and the Track Power Indicator on your DT400 display and on your command station will come on solid. If the Track Power Indicator is blinking, press the Y+ Key again to make it solid and turn ...

The DT400 can be connected directly to the LocoNet port of your command station or to any Universal Panel of your LocoNet system.

DT400 is designed to maintain a close similarity in function & feel with Digitrax DT300, DT200, & DT100 series throttles. This family resemblance makes it easy to add new throttles to your Digitrax Command Control System and be able to use them in ways similar to the existing throttles that you are already used to. DT400 can be used with any Digitrax LocoNet System or other LocoNet compatible DCC system.   User friendly Multi-line Backlit LCD with easy to read icons and messages.   Prompts in the display guide you every step of the way. To make operation easy and ...

Is the DT 200 compatible with newer sets? The DT200 (now discontinued) was supplied with the Digitrax Big Boy starter set. The Big Boy system consisted of a DB100 configured as a booster, LA1 or LA2 LocoNet Adapter interface, DT200 throttle, and a power supply. The primary DT200 throttle also acted as the command station. The Big Boy system had full LocoNet capabilities. Unlike the Chief, this set depended on the DT200 as part of the of the system, with the throttle acting as the command station for the unit. With other LocoNet systems, such as Super Chief, it will ...

UT 2 was manufactured between 1995 and 2005

Keep Alive Power Jack (For DT200 & BT2) When the layout is powered down we recommend that you change the DT200 that is running as the Command Station to Advanced Throttle mode so it can power down and conserve its battery. Do this by pressing Run/Stop & Left Arrow keys together. All other Advanced Throttles on LocoNet will power down and show "idLE" when the LocoNet bus wires (pins 3 and 4 of the RJ12 plug) fall below +5Volts for more than 1/4 of a second. If the RailSync lines on LocoNet (pins 1 and 6 of the RJ12 plug) ...

Nowhere in your literature do I find the length of the cable for tethered DT throttles. The length is not published because there are variations between each order supplied to us by our vendor. Before the "coily" cords, the cable length was 7 feet. Checking my own DT400 throttle, the coiled cable is 31 inches long "at rest" and 84 inches at its maximum extension. However, it is quite likely that you will have a cable which might be slightly different. The DT400R will have a very short cable, long enough to connect to LocoNet to call up or release ...

These are the basic DT400 and DT402 series throttle operating instructions designed to get you “up and running” quickly and to minimize your “frustration level” as you learn to use the throttle.   Turning Track Status On and Off To run your layout you must be sure track power and track status are both ON.  Follow these steps with your DT400 or DT402 series throttle to do this. Press the "PWR" key on the bottom left side of the throttle. The words “+ON  -OFF” will come on in the display. Press the “Y +” key quickly and you should see the ...

I have a DCS100. I do not understand why my DT400's speed increases (all the way up to 99) sometimes when I plug it in. Also, sometimes the Loco number (when selected when this is taking place) will increase too. There is no control enabled when this is taking place. If I plug in a DT100 it operates normally. One of the buttons on the DT400 may be stuck, leading to this behavior. Take a look at the control panel of the DT400 and you will probably see this stuck button since it will not be in a fully returned ...

DT300 throttles can be converted to simplex radio by Digitrax. The DT300 cannot be converted to duplex radio. This radio retrofit must be done at the Digitrax factory because of FCC rules. Please complete the form in the warranty section of the website and send it in with your throttle.  Be aware the long cord will be cut off to 12", no exceptions.

  As of 2017, UT4 throttles can only be converted to duplex.  Digitrax discontinued simplex radio upgrades due to lack of parts. This radio retrofit must be done at the Digitrax factory because of FCC rules. Please complete the form in the warranty section of the website and send it in with your throttle.  Be aware the long cord will be cut off to 12", no exceptions.

If you break or lose the battery cover for your DT500 series, DT402 series, DT400 series, DT300 series,DT100 series, or UT series you will need a replacement cover.   With these throttles being discontinued, we no longer have any battery covers availabe.  Serpac produces the throttle case we used.  You can order a case through them or other big box electronics warehouses.  

  To use the UT2 to program a decoder you must first put the UT2 in Programming Mode. To do this press and hold “RUN/STOP” and simultaneously press “PROG”. The Status LED will now turn a steady orange color indicating the UT2 is now in Programming Mode. Set the locomotive you wish to program on an isolated programming track (See Section 5.2). Make sure that the DB150 command station is not connected to any other part of the layout. If you don’t have a programming track on your layout remove any locomotive you don’t want programmed at this time. Decoders ...

The headlights of my locomotive aren't acting properly. If you can’t control the operation of the lights in your locomotive with the DT400 (in default 128, or 28 speed step mode), be sure that the decoder is programmed in advanced 28 speed step mode. Do this by programming CV29 with a decimal value of 06.

  If your DT402 or DT400 display isn’t showing you what you expect based on the manual, press the EXIT Key to return to normal operating mode-Fn. Then try the throttle task again.

The UT4 series, UT4, UT4D & UT4R are "traditional" style throttles.  The UT4s were developed from a specification submitted by Digitras users through the Digitrax Yahoo group. These throttles were designed by operators for operators.  They are also great for beginners because of their intuitive controls and reduced feature set. By not offering all the bells and whistles, beginners can run your railroad without accidentally changing settings that might cause problems.   Works with any LocoNet compatible system   4-Digit addressing   Functions F0 - F12 for lighting and sound decoder operation   Direction switch with center brake position   ...

I own a Digitrax Starter Set that is now discontinued. Can I still use it and can it be upgraded?LocoNet lets you use all Digitrax LocoNet components in your system no matter when you purchased them. You can continue to use what you already own with new components as they become available. Note:  This will work with all starter sets except for Challenger. If you have a Challenger Set and you want to move up, the best thing to do is to purchase one of the new sets and use the DB100 series booster that came with your Challenger as ...

Option #F sets the radio frequency used by the throttle when in radio mode. This setting is x0A. This value is informational only, users are not able to change this value.

To change DT400 Option Settings 1. Consult the Throttle Option Setting Tables found in the DT400 manual to determine which settings you want to make for each of the 6 available options. 2. Press the OPTN t Key and the display will show: 3. The right side of the display will show the current value for OP#1. The default setting for OP#1 is x01. Notice that these values are entered in hex format. The “x” in front of the value lets you know to expect to use hex numbers. Pressing the throttle keys will not change to decimal values in this ...

  DT402 & DT400 can be set to click each time you press a key or turn one of the knobs. Some users prefer this auditory feed back and others don’t. DT402 & DT400 throttles are shipped with key & knob clicks enabled.

Throttle Option 2Throttle Default Decoder Status 128/28/14 speed steps Each DT402/DT400 can be set up to operate new decoders selected by that throttle as any decoder status code you choose. New decoders are defined as decoders that have not been selected in your system. Your throttle's default setting is to operate decoders that are 128 speed step capable, so when a new decoder is selected the throttle automaticaly assumse that all decoders selected are that 128 speed steps. If you operate mostly decoders that are only able to recognize 28 speed steps, you can change this setting.Tetherless Operation Mode Each throttle can be set up with radio ...

While it is running as a tetherless throttle, the DT402 and DT400 R and D versions automatically check the power available to the throttle each time a battery is inserted and each time it is plugged into or unplugged from LocoNet. The battery's voltage will be displayed in the text area of the throttle briefly each time the throttle is plugged in or is unplugged from LocoNet. When you plug in to LocoNet the number displayed will be the power provided by LocoNet. This value will be between 9 & 15 volts. Other characters will also be displayed in the LCD depending on ...

For normal tethered operation, DT402/DT400 throttles do not need a battery. If you want to use your DT402/DT400 as an infrared or radio throttle (R & D version), you must install a 9 volt battery.  You can use rechargeable batteries.DO NOT USE ANY OTHER TYPE OF BATTERY-AA BATTERIES DO NOT WORK. When you install the battery, the throttle will report the battery voltage and then display Idle. Once you plug in to LocoNet, the throttles will begin operating infrared and Ds and Rs will begin operating as duplex and simplex radio throttles. We recommend that you remove the battery from throttle if it is unplugged ...

You can use your DT400 series throttle with a DCS100 or DCS200 to set up routes that are triggered by operating a single turnout address to make it either c (closed) or t (thrown). Setting up and operating routes is similar to consisting locomotives because you can cause more than one unit to operate based on a single command sent to the system. We call the turnout address that other turnout addresses are “consisted” to, the TOP address. To operate a route, use Sw (Switch) mode to select the TOP turnout address in the route and move it to either closed or ...

Many operators use a fast clock during operating sessions to simulate prototypical operations. Traditionally, the fast clock is on the wall in view of the train operators; it is set up to run at a faster than real time so that an operating session can simulate prototypical operation on a compressed time scale. LocoNet has its own networked fast clock for all Digitrax throttles connected to your system. The fast clock display is a 4 digit 12 or 24 Hour format clock. To display the fast clock simply press the CLOC c Key. The fast clock display will remain active while ...

  What is Sw (Switch) Mode? Switch mode is used by throttles for sending commands to accessory decoders and for changing option switches in your LocoNet system. The most common use of switch mode is for operating turnouts.Switches are either thrown or closed.To change the position of a switch or turnout: 1. Press the SWCH key to enter switch mode. When you enter Switch mode, the throttle knobs & direction keys continue to control the loco addresses running on the throttle. Loco speed is displayed on the bar graph and loco direction is displayed on the direction indicators for each ...

The DT402 & DT400 can program and readback CVs with the DCS100 or DCS200 (Super Chief) or the DCS51 or DCS50 (Zephyr). You must use the programming track for this unless you are using Ops Mode with transponding installed to allow for Ops Mode readback.  Infrared and simplex radio throttles must be plugged in to LocoNet to read back CVs & their values.  Duplex radio throttles do not have to be plugged in for reading back CVs.Systems with a DB150 command station (Super Empire Builder) are not able to read back CV Values programmed into decoders. To read back CV values: 1. Place the decoder ...

A  “Busy” message during programming means that the system is temporarily busy.  Simply try the task again.  When the system is no longer busy, you will get a “Good” response. A  “Fail” message during programming means that there is a problem with the locomotive on the programming track.  Check to be sure the loco's wheels are making good contact with the programming track.  Make sure that the decoder is properly installed in the locomotive.   Make sure the connections to the programming track are secure.  Make sure the programming track is powered. 

Ops Mode programming, also known as "Programming on the Main" lets you change the configuration of an individual decoder while the locomotive is on your railroad without having to move it to the programming track.Operations mode programming lets you program CVs in DCC locomotives equipped with Ops mode capable decoders while they are on the mainline. A typical use for Ops mode programming would be to change the acceleration rate (CV03) or the deceleration rate (CV04) of your locomotives to simulate the weight and braking capability of the train to compensate for changing the number of cars or power units on a ...

In addition to the locomotive address, there are different Configuration Variables (CV's) that have been defined to handle many characteristics you might want to use for your locomotives. These include operational characteristics such as acceleration, headlight functions and others. The manual for each decoder type has a complete listing of CVs that are available in specific decoders, what they do and the suggested values for each CV. Simpler decoders have few CVs while advanced decoders may have many different CVs 1. Place the decoder equipped locomotive you want to program on the programming track If you are using operations mode ...

All CV values except for 2 digit and 4 digit addresses can be displayed as either decimal or hexadecimal numbers by the DT400. When you are using the L Throttle knob to browse through CVs 002 through 255, you will use the R Throttle knob to set the CV value you want to program.By default, the DT400 displays the CV values as decimal numbers 000-255 (nnn). To view the numbers as hexadecimal simply press the R throttle knob and you will see the CV value change to the hex equivalent of the decimal. Hex numbers are displayed as xnn. For ...

  Duplex Radio Throttle do not need to be plugged in to LocoNet to Program Decoders.  Simplex Radio & Infrared throttles must be plugged in to LocoNet to program CVs on the programming track. Ops Mode Programming can be done without plugging radio throttles in to LocoNet. IR throttles must be plugged in for Ops Mode Programming. 1. Be sure that only the loco you want to program is on the programming track. If you are using operations mode programming, the loco you want to program can be anywhere on the layout but it must have a decoder that is ...

Programming is the process of setting the configuration variables (CVs) in your decoder to the appropriate values that will make the locomotive perform the way you want it to.  The first CVs that most people change are those that set the locomotive decoder's address.  The mobile decoder in your locomotive usually comes pre-porgrammed to a factory default address of "03".  Once you add a second locomotive, you will want to change the this new locomotive to another address.  Not doing so will result in both locomotives operating at the same time when you send commands to address 03.Likewise, there are a ...

  Q:  How can I write and read the Configuration Variables of Mobile Decoder on the mainline using the DT40x Throttle? A:  Operations Mode Programming, also known as Ops Mode, lets you program a locomotive decoder's CVs while it is on the main line. With the addition of transponding in Ops Mode, you can write and read back CVs in DCC locomotives equipped with most modern decoders while they are on the mainline. Some older decoders before Extended Packet Format was used are not able to do this.For example: A typical use for Ops mode programming would be to adjust an engines ...

  Digitrax UT4 Throttle Operating Instructions by Dan Bourque     Selecting a locomotive or consist 1.         Dial the 4-digit locomotive address into the “LOCO ADDRESS” dials             - For a consist, the address will normally be the lead locomotive             - For a 3-digit locomotive number, use “0” for the first digit 2.         Plug the throttle into any receptacle on the layout fascia (e.g. Digitrax UP5) 3.         Press the “SEL” key, the ST light on the throttle should turn green 4.         Move the direction selector on the throttle to either “R” or “F” 5.         Move the ...

To stop everything on the layout, press the PWR Key followed by the N - Key while the track power is on. This will turn track power off and will cause all locos to stop. Press the PWR Key followed by Y + Key again and the locomotives will start running again at the same speed they were running prior to STOP mode. To exit PWR mode, press the PWR Key or the EXIT Key.

Q:  How do I program the PM42 Option Switches (OpSw) with a DT400 throttle? A:  The PM42 OpSw settings are used to set up the PM42, adjusting the trip current, short circuit management (including sensitivity), and/or auto-reversing. Note: The factory default setting on all PM42 OpSws is “thrown” or “t”. Follow the steps outlined below to program the OpSw settings of the PM42 using the DT400 series throttle with any Digitrax command system. 1) Connect the PM42 to a DCS50, DCS51, DB150, DCS100, or DCS200 with a standard LocoNet cable. 2) Connect the PM42 to an external power source; Digitrax ...

  Q:  How do I program the PM42 Op Switches with a DT300 throttle? A:  The PM42 OpSw settings are used to set up the PM42, adjusting the trip current, short circuit management (including sensitivity), and/or auto-reversing. Note: The factory default setting on all PM42 OpSws is “thrown” or “t”. Follow the steps outlined below to program the OpSw settings of the PM42 using the DT300 throttle with any Digitrax command system. 1) Connect the PM42 to a DB150, DSC050, DSC100 or DSC200 with a standard LocoNet cable. 2) Connect the PM42 to an external power source; Digitrax recommends the ...

Instructions below are for both DCS100 & DCS200 (DCS200 omitted in text for clarity).1. Refer to the DCS100 Option Switch Table to decide which option switches you want to change. Also note that there are special instructions for OpSw's 36, 37, 38, & 39. 2. Move the MODE toggle switch on the front of the DCS100 into the "OP" position . The LocoNet Railsync will go inactive & all other boosters plugged in to LocoNet, including the one that is built into the DCS100, will shut down. 3. Disconnect LocoNet from the DCS100 you are configuring. 4. Connect your DT300 ...

Note:  These instructions are the same for DCS100 & DCS200 (DCS200 omitted for clarity).1. Refer to the DCS100 Option Switch Table to decide which option switches you want to change. Also note that there are special instructions for OpSw's 36, 37, 38, & 39. 2. Move the MODE toggle switch on the front of the DCS100 into the "OP" position . The LocoNet Railsync will go inactive & all other boosters plugged in to LocoNet, including the one that is built into the DCS100, will shut down. 3. Disconnect LocoNet from the DCS100 you are configuring. 4. Connect your DT400 ...

Q:  I just purchased a used Digitrax set consisting of a DB150, UT2 and a PS515 for a very low price. What do I need to add to bring this up to current standards? A:  Because of Digitrax LocoNet, it is easy to add the latest components to upgrade on older starter set.  What you purchased was originally called a Genesis Starter Set.  The PS515 did not come with it but it is the perfect power supply for the DB150.   Your next step depends on what you want to do with your railroad.  In this case, the components you have will be ...

Although the UT1 can only handle addresses between 00 and 99, it can be used to operate one four digit locomotive address. 1. On the UT1 dial up 992. On a DT100, DT300 or DT400 series throttle, dispatch the four digit address you want to run on the UT13. On the UT1 press the ACQ (acquire button) to run the four digit addressNote that dispatching is a special state and the first UT1 throttle to press the Acquire button after the dispatch from another throttle will acquire that address to run.

Q: I have a Digitrax DT400 throttle. The left speed knob accelerates the locos at one speed unit per "click". However the right knob accelerates at three speed units per "click". How can I change the right knob to one unit per click? There is not a way to change the clicks to one per unit. Each rotation of a throttle knob on the DT400 series throttle generates 24 clicks.  Digitrax supports 14, 28 and 128 speed step operation in decoders; each click on a DT400 series throttle knob is related proportianally to the number of speed steps used by the decoder. So, for a ...