Inc Sound Module Decoder - Manual

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Digitrax recommends using the following values for CV16 for consistency:

0: Factory Default Value-Decoder is not locked

1: Motor decoder

2: Sound decoder

3: Function-only decoder (e.g. for additional lights)

4-7: Additional Decoders installed in the locomotive.

CV15 selects the target decoder that will accept programming commands.

When the values in CV15 and CV16 are equal, all CVs in the target decoder

can be programmed.

When the values in CV15 and CV16 are not equal, only CV15 can be pro-

grammed.

CV54 allows decoder lock to be disabled. Digitrax decoders are shipped

with decoder lock enabled by default.

The Factory Default Reset CV (CV08=08) will not work on decoders that are

locked unless the CV15 and CV16 values are equal. This prevents the user

from accidentally resetting multiple decoders at the same time, and losing the

ability to separately address them for programming purposes.

Implementation Specifics:

Each decoder is shipped from the factory with decoder lock enabled but are

unlocked with both CV15 & CV16 programmed to a value of 0.

Before installing each unlocked decoder in the locomotive:

1. Connect the target decoder to the programming track all by itself

2. Write a value of 08 to CV08 to ensure CV15 and CV16 are both zero

3. Read CV15 to confirm that the CV Value is 0 meaning that the decod-

er is unlocked.

4. Program CV values desired into any CVs in the target decoder.

Program the address to the one you will use for all of the decoders

that will be locked together.

5. When you are finished programming the CVs, lock the decoder by

writing CV16 to the desired ID number, for example 02 for a sound

decoder. This step locks the target decoder to ID 02.

6. Disconnect the target decoder from the programming track and install

it in the locomotive

7. Repeat in turn for each decoder to be installed in the locomotive. Note

that this decoder lock method can be performed even when only a

write-only programming method is available. Also, it is possible

to use a “legacy” non-lock version decoder along with new lock