What are NMRA standards?

Standard (S) – NMRA Standards are to establish the broadest correlated set of limiting dimensions, electrical parameters and communications parameters within which interchange may be assured. Standards are reviewed by the membership and approved by the Board of Directors.

What is DCC model trains?

Digital Command Control (DCC) is a standard for a system to operate model railways digitally. When equipped with Digital Command Control, locomotives on the same electrical section of track can be independently controlled.

What scale is G scale?

1/22.5 scale
“G scale” is properly only 1/22.5 scale, which is Meter gauge on 45mm track. It is correct to say: 1:13.7 scale garden train is the same as Large Scale.

Can DCC run DC?

DCC loco’s can run on a DC system. At the factory the default value for a decoder is to have the loco run on both DCC and DC. The user can change this value so the loco can only run on DCC if he wishes to do so.

Which is better DC or DCC?

DC is simple for basic track layouts, and if there are any problems it is usually easier to fix than DCC. However, if you are looking for a greater level of flexibility, have the budget, and want the extra electronics such as the smoke, then DCC is certainly the better option.

What is N scale size?

N scale is a popular model railway scale. Depending upon the manufacturer (or country), the scale ranges from 1∶148 to 1∶160. In all cases, the gauge (the distance between the rails) is 9 mm or 0.354 in.

Is G scale AC or DC?

As near as I know, all G-scale locomotives run on DC power. Only the old Lionel and American Flyer O scale and S scale trains used AC. Feeder lines are exactly what you have surmised them to be.

What voltage does DCC use?

The minimum output from a command station or booster, per the standards, is 12 volts. Unfortunately the maximum is 22 volts, and while most command stations and boosters put out less than 15 volts, there have been some notable exceptions.

Does DCC use AC or DC?

DCC is square-wave AC whose frequency is modulated to embed a digital signal. This supplies the +12V and – 12V (or greater) to run the DC motors. The wave has to be +/- to allow reversing. Each decoder rectifies this square wave and applies DC to turn the motor, on command.

Can you run DC and DCC together?

Many people want the best of both worlds in that the layout can support the running of DC locomotives and DCC locomotives. The DCC system and the DC system are never run at the same time and are 100% isolated from each other.

Can a DCC train run on a DC track?

What was the purpose of the NMRA standards?

The NMRA Standards were developed as a way to help insure that equipment could be interchanged between one model railroad and another and that cars and locomotives of one manufacturer could run on the track of another manufacturer together with cars and equipment of still other manufacturers and modelers.

What does technical information ( ti ) mean in NMRA?

Technical Information (TI) – NMRA Technical Information are documents that are used to provide information associated with a Standard or Recommended Practice. Technical Information is reviewed by the appropriate technical working group and approved by the Manager, Standards & Conformance.

What are NMRA standards for Digital Command Control decoder transmission?

TN 4-05 Electrical Specifications for Digital Command Control Decoder Transmission (NMRA RP-9.2.1) Draft July 10, 2005 These Copyrighted Standards and Recommended Practices are a publication of THE NATIONAL MODEL RAILROAD ASSOCIATION, INC.

What is a Recommended Practice ( RP ) in NMRA?

Recommended Practice (RP) – NMRA Recommended Practices do not rise to the level of being a Standard, however, they provide details of various topics that have been found to be the best for interchangeability or operation of products.