
12778474-002-2 Revision F – March 2004
TSG-3800 User’s Guide 147
Input Modules
G.703/9 Input Module
Configuring the G.703/9 Input Module
The user can modify operations of the G.703/9 Input module by setting jumpers.
The jumpers are labeled TB1 through TB5.
Figure 5-5
illustrates one of the terminal
blocks. Pin A is identified by the arrow.
.
Figure 5-5.
Terminal Block on the G.703/9 Input Module
Selecting CAS/CCS Framing
You must configure the G.703/9 Input module to match the G.703/9 framing of the
input signal (CAS or CCS). To select CAS or CCS framing, set the jumper on TB5
as shown in
Table 5-6
.
Selecting HDB3/AMI Format
To select DB3 or AMI formatting, set the jumper on TB3 as shown in
Table 5-7
.
Input Impedance
75, 120, or 3.3 k
Ω
(jumper selectable)
Monitor
Bantam jack, 860
Ω
isolation
Caution:
To prevent ESD damage to the module, always observe
the precautions described in
Properly Handling the Modules
, on
page 61.
Table 5-6. Selecting CAS/CCS Framing
Framing Selection
TB5 Jumper Position
CAS
B to C
CCS
A to B
Table 5-7. Selecting HDB3/AMI Framing
Framing Selection
TB3 Jumper Position
HDB3
A to B
AMI
B to C
Table 5-5. Specifications, G.703/9 Input Module (Continued)
Signal Characteristic
Specification
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