4-1
DAR Plus Operator’s Guide
4
Section
400468-1
Rev. C
4 Summary Alarms
4.1
Overview
Both the DAR Plus transmitter and receiver use a control Module to gather diagnostic
information from the Analog RF Shelf, the digital RF shelf, the power supply, and several
plug-in modules.
The Control Module is mounted to the hinged front panel and connects to the backplane
using a ribbon cable. The backplane acts as a connection interface to route alarm
information to the Control Module.
shows how diagnostic information is routed to the Control Module from the
various system components.
Figure 4-1
DAR Plus Diagnostic Interconnection
AUDIO
BOARD
VIDEO
BOARD
MODULATOR or
DEMODULATOR
I/O
ALARMS
30 PIN RIBBON CABLE
BACKPLANE
PLUG-IN
MODULES
FRONT PANEL
and
DOOR
ASSEMBLY
CONTROL
MODULE
DISP_BD
DIGITAL
RF SHELF
ANALOG
RF SHELF
POWER
SUPPLY
CABINET ASSEMBLY
AC
COOLING
FAN
LCD
DISPLAY
KEYPAD