Vstart

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Decoder Features

Movement & speed
Back EMF
Decoder-Assisted Consisting
Dither
High Frequency
Kick Start
Loco Momentum
Trim Adjust
Loco Momentum
MU Consisting
Speed Steps
Speed Table
Switching Speed
Three Step Speed Table

Forward/Reverse Trim

Vstart
Vmid
Vhigh

Programming
Addressing
Decoder Reset
Programming
Programming Lock
User Identifier

Lighting & Effects
Directional Lights
Func Remap
FX Lighting
Master Switch

Misc
Short-Circuit
Thermal Protection
Transponding

DCC Core components

Intro
Booster
Command Station
Decoder
Power Supply
Throttle

Track work components

Track wiring
Track work

CV 2, Required.

This controls the minimum voltage applied to the motor on speed step 1. This value can be anything from zero volts to the maximum voltage available.

It is a fraction of the rectified motor voltage available. When set to zero, no voltage is applied, when set to 1111 1111 (255 or $FF) maximum voltage is available.