User's Manual

SECTION I INTRODUCTION
SM 7063 07/97 1-7
1.7.2 CDU Rear Panel
The photo below shows a typical rear panel connector layout for the CDU Model 6696.
Figure 1-2. Model 6696 CDU Features (Rear Panel View)
The CDU supports connectors on its rear panel for the following functions:
Power:
72 VDC nominal locomotive power or 13.6 VDC nominal for mobile use.
Axle Alt.:
Connects to locomotive’s axle alternator for Odometer related functions.
Antenna:
Connects to roof mounted locomotive UHF antenna.
Datalogger:
Can be interfaced to an event recorder, computer, or serial printer.
Diag:
Connects to a PC serial port for diagnostic and configuration purposes.
Mounting hardware on the rear panel includes:
Screw Latch:
Spring loaded latch secures the CDU to the Mounting Tray or AAR Clean Cab
Enclosure.
Lock Bracket:
Provides a means for locking the CDU to the Mounting Tray using a padlock.