Operational Check; Primary And Secondary Distribution Slots - Symmetricom TSG-3800 Series User Manual

Output Modules
TTL Clock Output Module
Table 7-44. Primary and Secondary Distribution Slots (Continued)
Model
3800X/3800EX 4, 6, 8, 10, 12, 14, 16, 18, 20
19-inch Shelves
3800X 23-inch 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24
Shelf
Making Signal Connections
The output signals are available at the 50-pin connectors located on the rear panel
of the shelf. Outputs one through 20 are used by this module. Refer to
Output Signal

Operational Check

With power applied to the shelf, install the TTL Clock Output module in the
appropriate slot and verify that the POWER indicator is lit. This indicates that the
module is receiving power and the module power supply is working.
Verify that the module is receiving the input signals by observing the A and B INPUT
FAULT indicators. For Locked operation and with two references applied, both
indicators should be off.
If at least one functional Frame Generator is installed, the OUTPUT FAULT indicator
should go out within eight seconds after the TTL Clock Output module is installed. If
it does not, an output may be bad or has an excessive load connected to it
(example, shorted). The indicator will remain on if there is no reference connected,
since there can be no outputs.
Note: The module indicators may take a few seconds after
installation to reach proper operating status.
268 TSG-3800 User's Guide
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Primary Distribution Slots
Connections, on page 56, for more information.
Secondary Distribution Slots
5, 7, 9, 11, 13, 15, 17, 19, 21
5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25
Making
12778474-002-2 Revision F – March 2004