SoundTraxx Coach Lighting Decoder Users Guide - Manual (Page 23)

SoundTraxx Lighting Decoder User’s Guide Page 20
Step 6: Analog Mode
Analog Mode
Your SoundTraxx lighting decoder is designed to be used in both Analog (DC)
and DCC Modes. The decoder has been defaulted to have analog mode
operation enabled, but it is a good idea to understand how these features are
enabled should any CVs be changed. First, CV 12 must be set to a value of
1 or the decoder will not recognize DC voltage. Next bit 2 in CV 29 must be
enabled. Finally the lighting outputs that you wish to have light up in analog
must be turned on through CVs 13 and 14. Again, all these CVs have been
defaulted to operate in analog mode..
Analog Mode Operation
When analog mode is enabled, you may control your decoder using an
ordinary power-pack.
The throttle must be turned up to around 4 volts to provide sufficient voltage
to power up the decoder’s capacitor and internal circuitry. At this point, you
will begin to see the lights turn on.
When operating in analog mode, be careful not exceed the decoder’s input
voltage rating of 27 volts. When your track voltage exceeds 21 volts, the
decoder will automatically shut down and begin flashing Error Code 10 on all
of its lighting outputs. When you see this condition, back down on the throttle
immediately.
Important: Your decoder will work best in analog mode when using a
high quality, electronically regulated power pack, preferably one that supplies
smooth, filtered DC power. Older rheostat style power packs and pulse power
packs will result in erratic and unreliable operation and should not be used
with the decoder. If your power pack provides a Pulse power switch, leave it
in the ‘Off’ position.
Analog Mode Options
As discussed earlier CVs 13 and 14 must be set up to activate the functions
to turn on in analog mode.
Analog Function Enables
CV 13, Analog Function Enable 1
CV 14, Analog Function Enable 2
These CVs allow you to force a function input to the ON state whenever your
decoder switches over to analog mode. This is most useful for turning on
lighting effects when running on a DC powered layout.
Basic Programming