Functional Description; Block Diagram Of The T1/E1 Frame Generator With Ssm; T1/E1 Frame Generator Module Status Indicators - Symmetricom TSG-3800 Series User Manual

Table 6-13 describes the front panel status indicators (LEDs) on the T1/E1 Frame
Generator Module.
Table 6-13. T1/E1 Frame Generator Module Status Indicators
Indicator
POWER
FAULT

Functional Description

Refer to Figure 6-7
Generator combines the functions of the T1/CC Frame Generator
(23476568-xxx-0), the CEPT Frame Generator (23477799-xxx-0), and the T1/E1
Frame Generator (23478305-xxx-0), into one module with the addition of CEPT
SSM. Two timing outputs and two clock signals are provided, making it possible for
the TSG-3800 to simultaneously output T1/E1, T1/CC, or E1/CC timing signals. In
addition, this module supports SSM on the DS1-FSF and E1 outputs.
The T1 output is derived from an 18.528 MHz reference signal from the
corresponding Clock module in the main shelf. The reference signal is divided to
1.544 MHz and sent to the DS1-D4/ESF Format Generator. This circuit produces
balanced TTL level signals that represent a framed, all ONEs DS1 signal. A rocker
switch on the module determines the framing format used (D4 or ESF).
Figure 6-7.

Block Diagram of the T1/E1 Frame Generator with SSM

12778474-002-2 Revision F – March 2004
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Color
Green On = Module is receiving power.
Red On = Module failure.
Blinking = Module is disabled.
for the following functional discussion. The T1/E1 Frame
CPU, Frame Generator, and Clock Modules
T1/E1 Frame Generator Module with SSM
Description
TSG-3800 User's Guide 187