Many decoders do not allow changes to CV01, the 2 digit address or CVs 17
& 18, the 4 digit address. In these cases, changes o the address must be made
with service mode programming on a programming track.
To simplify programming for both service mode and ops mode, we recommend
adding an electrically isolated programming track to your layout for program-
ming purposes.
Figure 3
shows how to set up an electrically isolated program-
ming track.
Figure 3: Programming Track
4.7 Reverse Section Wiring
You can operate reversing sections manually or automatically with Digitrax.
You must double gap (completely isolate) both ends of the reversing section
just like with any other layout. If you choose manual operation, use a DPDT
switch or relay to handle the polarity change as the loco enters & exits the
reversing section.
If you use an additional DB150 auto reversing booster to completely automate
the reversing section, power the reverse section with a separate DB150 and
transformer. (Note: The DB150, when set up as a command station, cannot be
set up to auto reverse.)
If you use an automatic reversing device such as a Digitrax PM42 or one made
D B 1 5 0
T R A C K
S T A T U S
P O W E R
O N
O F F L I N E
O / G
N
H O
M O D E
P
R U N
L O C O N E T
A
B
S C A L E
S L E E P
R
R
R
CONF B
RAIL BRAIL B
POWER IN
CONF A
RAIL ARAIL A
POWER IN
GROUND
DB150 Configured
As a Command Station
NOTE: Some wiring ommitted for clarity
RAIL A
RAIL B
RAIL A
RAIL B
Switch "OFF or OPEN"
When Programming
Programming Track
(Electrically Isolated)
Double
Gaps
Main Layout
26