| Word | Description |
|---|---|
| RailSync | The RailSync lines communicate a copy of the track signals to the Boosters for amplification and transmission to the rails. RailSync lines can power a limited number of LocoNet connected devices on small layouts. As the number of power consuming LocoNet devices attached to LocoNet increases, the need to separately power those devices increases. RailSync is a low power signal that mirrors the DCC packets on the rails. It is generated by the Command Station and sent out via LocoNet (pins 1 & 6) to devices such as Boosters, Occupancy Detectors and any other device which require RailSync to operate. Boosters receive the RailSync data, amplify or boost the signal and output it to the track. RailSync can also be used as a source of power for low current devices such as throttles. |
| Receiver | An electronic device that performs a similar function to a DCC decoder in a carrier control system. DCC decoders do more than just receive information, they actually decode it, determine if it applies to them and then control the loco based on the decoding. |
| Recommended Practices (RPs) | Are set up by the NMRA an adjunct to the Standards. RPs are not mandatory but if a feature covered by an RP is implemented, it should follow the RP. |
| Refreshed (Data) | DCC command stations re-send data to decoders many times to be sure that the signal is not lost and that you have reliable operation. All in-use and common locos in the system will continue to be refreshed until they become idle. |
| Retriggerable | Stationary decoder configuration that allows the decoder to accept new input and begin a new action before completing the current action in progress. |
| Reverse Loop or Reversing Section | Any track layout that allows a loco to enter and exit on the same rails while moving in the same direction. This creates a track polarity mismatch at one end or the other of the track section which must be corrected in order for the loco to continue moving. |
| Reverse Trim | A scaling factor applied to all speed step values in a speed table for a loco moving in the reverse direction. |
| RJ12 | Standard type of telephone style plug and socket used for six conductor cable. |
| Roster | A roster is a list of locomotives. A roster in a command station is the list of locomotives that are actively using slots in your command station. |
| Route | A group of turnouts and their specified positions that will be triggered by the activation of a single "TOP" switch address to a specified position. |
| Routes | A group of turnouts and their specified positions that will be triggered by the activation of a single "TOP" switch address to a specified position. |
| Rule 17 Dimming | Requires locos waiting to be passed and in other circumstances to dim their headlights. Digitrax FX decoders allow you to use rule 17 dimming. |