Short Address Range 1-127 Start voltage Range 0-32 Acceleration Range 0-32 Deceleration Range 0-32 Top voltage Range 0-32 Manufacturer version number Manufacturer ID Long Address 4 digit address (Range 0001-9999) Advanced consist address Normal Reversed Consist Direction Locomotive Address Only Respond to Consist Address Functions Respond To Address Forward Reverse Normal direction of motion 14 28/128 (recommended) Speed Steps Off On Analog conversion mode 2 digit addressing 4 digit addressing Addressing Mode Master Volume Control Range 0-3 Whistle Type MRC claims Range 0-13 on Challenger, 0-18 on Big Boy Whistle Volume Range 0-3 Bell Type Range 0-3 Bell Volume Range 0-3 Bell Ring Rate Range 0-50 Chuff type Range 0-3 Chuff volume Range 0-3 Brake Squeal Volume Range 0-3 Air Release Volume Range 0-3 Blower Hiss Volume Range 0-3 Fire box door volume Range 0-3 Injector Volume Range 0-3 Coupling Volume Range 0-3 Air Pump Volume Range 0-3 Rail Clack Volume Range 0-3 User ID #1 User ID #2 Conductor volume Range 0-3 Disable, constant lights Enable, Directional Directional Light enable/disable Air Pump Type Range 0-2 Disable Enable Air brake squeal enable/disable MRC docs, not on Big Boy Shoveling volume Range 0-3 Coupling Fire Volume Range 0-3 Chuff Rate Range 0-30 Chuff Start Point Range 0-7 Disable Enable Double chuff enable MRC docs, not on Big Boy, but it DOES work Off On Load Control Back EMF Linear Slow increase at slow speed Fast increase at slow speed Select Speed Curve MRC decoders for Athearn N Challenger and Big Boy locos Controls whether this loco's functions (lights) respond in the consist, or just to this loco's unique address MRC