Configuring The Frame Generator Module - Symmetricom TSG-3800 Series User Manual

Frame Generator module. If framed signals are connected to both Input module port
1.1 and Input module port 2.1, the Frame Generator module automatically selects
input 2.1 when input 1.1 is lost, and returns to input 1.1 when the input is again
located. The Clock Bypass mode requires both input signals to be of the same type,
where both input signals must be DS1 or E1.
This module gets power from the main shelf, Power A and B. These redundant
sources of –48 vDC are diode coupled and fused, allowing it to draw power from
either source. The internal fuse labeled F1, protects the circuitry from excessive
current. The DC-to-DC Converter changes the negative voltage into +5 vDC, and
the green POWER indicator on the front panel indicates that power is available to
the module. The POWER indicator turns off in the event of any loss of power, such
as the fuse on the module opens, loss of both –48 vDC power inputs, or if the
regulator fails.

Configuring the Frame Generator Module

The T1/E1 Frame Generator module with Clock Bypass can be customized for
different TSG-3800 configurations by setting several rocker switches and two
jumpers, as shown in
TSG-3800, you must set these switches for the Output modules installed in the main
shelf.
Note: You must set the rocker switches and jumpers before you
install the Frame Generator Module in the TSG-3800.
Caution: When two Frame Generators are installed in the main shelf,
the switches and jumpers on both Frame Generators must be set the
same. The module does not support a mix of input signals.
12778474-002-2 Revision F – March 2004
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T1/E1 Frame Generator Module with Clock Bypass
Figure 6-8. Before installing the Frame Generator in the
CPU, Frame Generator, and Clock Modules
TSG-3800 User's Guide 197