LT1 Set Up As A Track Tester
You can also use a bi-color LED indicator lamp, with a 500 to 1k
ohm resistor in series, connected to the two rails of the powered
track.
4. Set your command station’s Option Switch #41 to closed to generate a
diagnostic “click” sound each time it receives a good LocoNet mes-
sage. See the DB150 Option Switch Setup Section in this manual for
information about changing this options switch. This has no effect
on command station operation except that it causes the diagnostic
clicks. Once you have finished installing the UR 90 or 91, set
OpSw#41 back to thrown and the clicking will be disabled.
22.3 UR90 Infrared Receiver Installation
Many customers simply plug in one or more UR90s around the layout and
begin experimenting to decide where to install additional units to get the best
IR reception. The following installation procedure is more organized and may
save you money by helping you install fewer UR90s to get adequate coverage.
Since infrared operation depends on line of sight, UR90s must be located so
that the IR signals from the throttles will be “seen” by the UR90. Reflective
walls and ceilings will help IR reception however, more than one receiver may
be necessary for full coverage of your layout.
1. Decide how you will observe whether signals are being received. See
Section 22.2 above.
2. Remove all locomotives from the layout and turn off the power to the
system.
3. Plug your UR90/s into LocoNet jacks near where you think will be the
best installation location. Remember that infrared is line of sight
when deciding on possible installation locations.
4. Provide power for the UR90/s according to Section 22.1 above.
Green & Red
wires not used
Black & Blue
Yellow &
White
Led will be lit
Led will be lit
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