DCS Command System User’s Guide
Menu Operations - Sound
Doppler Loop: (cont’d)
Note: Because there is no Global Positioning for model trains, the Doppler system measures distance,
not location on a layout. You must begin and end your setting and begin operation at the exact same
point on the layout, or the mis-measurement will cause the Doppler peak location to move over time. For
instance, if you stop programming the loop 5 inches short of where you started, the loop will be five inch-
es short of your layout’s full route, and the Doppler peak will move by five inches on every trip around
the layout.
DCS Tip:
For small layouts:
There may not be enough room for the Doppler effect to fade completely to silence
between loops. You can turn down the master volume before running in Doppler mode
so that the engine sounds will fade completely.
For very large layouts:
You may have a large enough layout to program Doppler to play the loop more than
once as it circles your layout. To do this, divide your track very carefully into even seg-
ments (exact halves, thirds, or quarters), and program the Doppler effect to play for only
one of those segments. When you operate the train, the sound will play back-to-back as
it travels the track.
External Mic
-
When External Mic is active the (M) icon is lit on the LCD.
-
When External Mic is active the TIU CANNOT process any other
commands except the audio from the microphone.
-
You need to plug in a microphone into the Proto-Dispatch (Mic) jack
on the TIU.
-
You enable the above jack in the remote.
-
DO NOT forget to disable it once you are done using the mic.
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