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Multi-Protocol Operation
Analog Operation
This decoder can also be operated on analog layouts or
areas of track that are analog. The decoder recognizes
alternating current or direct current voltage (AC/DC) and
automatically adapts to the analog track voltage. All func-
tions that were set under mfx or DCC for analog operation
are active (see Digital Operation).
Digital Operation
The mSD sound decoders are multi-protocol decoders.
These decoders can be used under the following digital
protocols: mfx, DCC, fx (MM).
The digital protocol with the most possibilities is the highest
order digital protocol. The sequence of digital protocols in
descending order is:
Priority 1: mfx
Priority 2: DCC
Priority 3: fx (MM)
Note: Digital protocols can influence each other. For trouble-
free operation, we recommend deactivating those digital
protocols not needed by using CV 50. Deactivate unneeded
digital protocols at this CV if your controller supports this
function.
If two or more digital protocols are recognized in the track,
the decoder automatically takes on the highest order digital
protocol, example: mfx/DCC; the decoder takes on the mfx
digital protocol (see previous table).
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Note: Please note that not all functions are possible in all
digital protocols. Several settings for functions, which are
supposed to be active in analog operation, can be done
under mfx and DCC.
Braking / Signal Stopping Block (MM, fx, mfx,DCC)
The braking module essentially applies DC voltage to the
track. If the decoder recognizes a DC voltage of this kind in
the track, it brakes with the delay that has been set. If the
decoder recognizes a digital protocol again, it accelerates
at the speed that has been set.
If automatic recognition in braking areas is to be used,
we recommend shutting the DC operation off (see CV
description).
In DCC operation, we recommend setting the value in CV 27
to 16 or 32 (see Page 46) for automatic braking.
Automatic Calibration for All Protocols
• The type of motor must be selected (see CV 52) before
calibration.
• Automatic calibration of a locomotive must be done on a
suitable oval of track without obstacles (signals, grades,
etc.). We recommend an oval of track with curves larger
than 430 mm / 17" in radius. The locomotive is accelera-
ted to the maximum speed and can therefore derail on
smaller radius curves. Go into the locomotive configura-
tion on the Central Station-> CV-> Info for automatic ca-
libration of the locomotive. In the field Firmware version,
overwrite the first digit with 77. In the protocols MM/DCC,
enter CV 7 directly in the configuration mode. Overwrite
the value displayed there with the number 77 and store it
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