Digitrax SoundFX SDH187MT Manual - Página 7

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Selecting the Sound Scheme on Your SDH187MT: CV60

The SDH187MT comes preloaded with 2 different sound schemes, 1 die-

sel and 1 Steam. The active scheme is selected by the value in CV60, as

shown in following table.

CV60

Factory Sound scheme

value

SD38 diesel

Steam type 1 (based on 3985)

Selecting Horns: CV150:

with one of 2 different horns using CV150.

Diesel Notching: CV132 and 155:

Sound CV155 is provided to select Diesel engine "notching" modes. The

default of CV155= 00 provides "automatic notching" that changes the

diesel RPM settings at 8 distinct throttle speeds that are configured by

Sound CV132 and follow speed directly.

Sound CV155=01 selects "semi-automatic notching" mode that allows F6

ON to increase the notch up from the current throttle setting and F7 ON

to decrease back down towards the lowest current throttle notch setting.

Sound CV155=02 selects "manual notching" mode that allows F6 ON to

increase the notch setting and F7 ON to decrease the notch sound setting,

irrespective of the throttle speed, which then controls just the motor

speed.

Steam Exhaust Chuff / Cam Configuration and Gear Ratio

Trim: CV133 and 134:

CV133 controls the Steam Chuff / Cam configuration in the decoder. It

allows you to set the value of the CV equal to the diameter of the driver in

inches from 1-127. Set CV133 to 128 to enable the external cam lead con-

trolling steam exhaust chuffs. CV134 controls the gear ratio trim, where

a value of 32 equals a 100% ratio.

Bell and Air Effect Rates: CV146-149:

CV146 controls the bell rate or time between rings of the bell, it has a

range from 1-100 with each increment adding 24ms of delay. CV147 con-

trols the drier rate, it has a rage from 1-64 with each increment adding

about 2 seconds. CV148 controls the Compressor/ Air pump start rate

and CV149 controls how long the Compressor/ Air Pump runs.

The Diesel Scheme can be configured

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