A bit of clarification here having picked up on something I have read by Lionel Strang.
The NMRA standard applies only to the command signal between the decoder mounted in the loco and the command unit connected to the track. The NMRA standard does not apply to the command unit, speed controller or any power boosters.
Manufacturers have to conform with this command signal standard to receive NMRA conformance approval.
This permits any command unit from any manufacturer to control any chip from any other manufacturer providing this signal standard is adhered to.
The command unit and decoder features and specifications (2 or 4 digit addressing, etc) have no bearing on whether they meet NMRA standards or not. They are NMRA compliant if they recognise the NMRA standard for the command signal.
Happy modelling
Gary
The NMRA standard applies only to the command signal between the decoder mounted in the loco and the command unit connected to the track. The NMRA standard does not apply to the command unit, speed controller or any power boosters.
Manufacturers have to conform with this command signal standard to receive NMRA conformance approval.
This permits any command unit from any manufacturer to control any chip from any other manufacturer providing this signal standard is adhered to.
The command unit and decoder features and specifications (2 or 4 digit addressing, etc) have no bearing on whether they meet NMRA standards or not. They are NMRA compliant if they recognise the NMRA standard for the command signal.
Happy modelling
Gary