Output Modules
RS-422 Clock Output Module
244
TSG-3800 User’s Guide
12778474-002-2 Revision F – March 2004
Configuring the RS-422 Clock Output Module
This section describes how to configure the RS-422 Clock Output module to meet
the requirements of your particular installation.
Selecting the Input Signals
The input signals can be selected by installing jumpers on TB1, TB2, TB3, TB4,
TB5, TB6, and TB7.
The options are as follows:
If the Frame Generator installed is 23476568-
xxx
-0 or 23478305-
xxx
-0, then set
TB1 through TB7 to Position C. Frequency selection (1544 or 2048 kHz) is made
on the Frame Generator module. Refer to the appropriate Frame Generator.
If the Frame Generator installed is 23477799-
xxx
-0, then the frequency can be
selected either on this module or on the Frame Generator module. Set TB2, TB4,
TB5, TB6, TB7 to position C.
Use TB1 and TB3 to select the signal supplied by the Frame Generator as
follows:
–
Position C
selects either 1544 kHz or 2048 kHz, whichever is configured
at the Frame Generator
–
Position A
selects 1544 kHz
Installing the RS-422 Clock Output Module
The RS-422 Clock Output module is designed to operate in pairs. Insert one module
in a primary distribution slot; insert the other in the corresponding secondary
distribution slot.
Table 7-29
lists the primary and secondary distribution slots in the
TSG-3800 series.
Caution:
To prevent ESD damage to the module, always observe the
precautions described in
Properly Handling the Modules
, on page 61.
Table 7-29. Primary and Secondary Distribution Slots
Model
Primary Distribution Slots
Secondary Distribution Slots
3800/3800E
19-inch Shelves
18, 20
19,21
3800 23-inch
Shelf
18, 20, 22
19, 21, 23
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