Union Products Communication display Unit 6696 ユーザーズマニュアル

SM 7063  07/97                                                                                                                              2-1

This section details the installation of a CDU into the locomotive cab environment. Two versions of CDU
mounting arrangements are available:

1. CDU mounted on a Mounting Tray.
2. CDU mounted in an AAR Clean Cab Enclosure.

The locomotive equipment comprises a Model 6696 Communication Display Unit (CDU).  Available
accessories include (refer to Table 1.1 for part numbers):



Complete Installation Kits



Mounting Tray



Antenna Cable Kit



UHF Antenna



Power Cable Assemblies



Odometer Cable Assemblies



Diagnostic Software Disk

The Power and Odometer cables may be purchased separately or fabricated by the Railroad.

The locomotive antenna and antenna cable may be purchased from US&S or supplied by the Railroad.
The cable must employ a PL-259 style UHF connector.  The antenna itself must be 1/4 wave whip or a low
profile slot-type antenna.

If desired, the Railroad may supply a padlock to lock the CDU into position on the Mounting Tray.

This section provides information on preparing a locomotive for installation of the CDU. Once the
locomotive has been equipped as described in this section, the CDU may be installed as instructed in 2.4.

Preparing the locomotive involves equipping it with either a Mounting Tray or AAR Clean Cab Enclosure
and wiring the required electrical connections. Note that some locomotives may already have this
equipment installed.

The Mounting Tray is typically located on the control stand and provides the CDU with a mechanical quick-
disconnect base for easy application and removal. The Mounting Tray is affixed to the control stand as
follows:

1. Using a Mounting Tray as a template, mark the control stand for drilling.

2. Drill holes of 1/4" diameter.

3.Attach the Mounting Tray to the control stand using appropriate bolts, nuts, and lockwashers (supplied by

the Railway).