SoundTraxx Tsunami Steam Technical Reference - Manual (Page 89)

Tsunami Technical Reference Page 87
CV 195 Grade Crossing Whistle Sensitivity
Bits 0-7: D0:D7, Grade Crossing Whistle Sensitivity
This CV contains a value between 0 and 255 that
specifies the positive rate of throttle change needed to
activate the automatic grade crossing whistle. The CV
setting is interpreted as:
CV Value = Speed Steps per Second÷10
Default Value: 4
Bit 7 Bit 0
D7 D6 D5 D4 D3 D2 D1 D0
Automatic Sound Control CVs