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12778474-002-2 Revision F – March 2004
TSG-3800 User’s Guide 253
Output Modules
RS-422 Selective Rate Clock Module
Table 7-34
describes the RS-422 Selective Rate Clock module front panel status
indicators (LEDs), Selection Indicators, and Buttons.
Table 7-34. RS-422 Selective Rate Clock Module Indicators and Buttons
Label
Description
Status Indicators
POWER
Green
On = The module is receiving power.
UNIT FAULT
Red
On = Power supply fault or processor failure.
INPUT FAULT A
Amber
On = No reference signal applied to input A.
INPUT FAULT B
Amber
On = No reference signal applied to input B.
PORT FAULT
Red
On = Driver fault on corresponding port.
Blinking = Program mismatch between redundant
units.
Selection Indicators
PORT SEL
Displays selected port of ports 1 through 10 (A =
port 10)
OUTPUT FREQUENCY
Displays selected frequency
Buttons
PORT SEL
Press to select ports 1 through 10
(A = port 10)
CNT UP
Press to increase output frequency display
CNT DWN
Press to decrease output frequency display
Note:
Press the CNT UP and CNT DWN buttons at the same time
and hold for approximately two seconds to select the displayed
frequency.
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