©2009 Digitrax, Inc.
www.digitrax.com
5
Consisting (MU)
If the loco you select is the “top” loco in a consist the Status light will blink
Green, and you have complete control over the consist speed, direction and the
functions on the “top” loco.
When you’ve selected a consist member that is not the “top” loco, the status
light will show steady Orange and the UT4D will control only the functions of
the loco. You will not have throttle, forward/reverse direction or brake control
of the consist. This is normal. The UT4D is not designed to make up or break
up consists, but can control functions of individual consist members.
The Function Keys: Controlling lights and sounds
There are 7 function keys and a SHIFT key on the UT4D for controlling func-
tions F0-F12. Functions F0-F6 are controlled by pressing the corresponding
key. F7-F12 are controlled by using the SHIFT key with the function keys. To
use functions F7-F12 you must
press and hold down
the SHIFT key on the
lower left row as you press the F7 through F12 key. The function keys toggle
on and off with
each press
, except for F2, which is ON only when held down,
and OFF when released. The F2 key has a ‘Hold’ feature that can be set by
holding the F2 key down for 15 seconds. Tapping F2 again turns it off.
Duplex Radio and Infrared Operation:
The UT4D has wireless Duplex radio capability for layouts that are equipped
with one or more UR92 Duplex transceivers within range. The UT4D will not
modify the UR92 Group Name or Channel#. UT4D will not work with UR91
simplex radio receivers in radio mode but can be used as infrared or walka-
round on simplex radio layouts.
Duplex operation:
1. Install a known good 9 volt battery into the UT4D.
2. Plug the UT4D into a LocoNet port to get the Group Name
3. When the UT4D is unplugged from LocoNet, the unit will automatically
change to Duplex mode and generally operate as if it were plugged in.
Infrared operation:
In addition to Duplex Radio capability, your UT4D is equipped with infrared
emitters that allow it to work on layouts that are equipped with one or more
operating UR90 and/or UR91 infrared receivers.
1. Install a known good 9 volt battery into the UT4D
2. With the UT4D plugged in to LocoNet, dial up the address using the 4
rotary address selectors and press SEL to acquire the locomotive address.
D
igitrax
C
ommand
C
ontrol
Run Your Trains, Not Your Track!
