CXR Larus 80-100-400
Issue 1, July 2006
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page
3-82
3.47
Model 54500E Backplane
Refer to Section 5, Figure 5-1, for an illustration of the backplane. The
information that follows applies to Larus Model 54500-16 (E1) and -17 (T1)
shelves. This listing describes inputs, input/outputs, and outputs.
3.4710 Inputs:
a. DS1/E1/2048 KHz Inputs: 3 terminations, 2 wirewrap pins plus ground
(CC, 5 MHz, 10 MHz use Inputs 1 and 2 only).
1. Input
1
2. Input
2
3. Monitor
3
4. Monitor
4
5. Monitor
5
6. Monitor
6
7. Monitor
7
8. Monitor
8
9. Monitor
9
10. Monitor 10
b. Power (terminal block TB2)
1.
-48 V A
2.
-48 V B
3.
BATT GND A
4.
BATT GND B
5. FRAME
GND
c. EXT REF CLK A (BNC); 5 MHz or 10 MHz to Track and Hold Card A
d. EXT REF CLK B (BNC); 5 MHz or 10 MHz to Track and Hold Card B
e. GPS ANT 1 (COAX)
f. GPS ANT 2 (COAX)
g. Local access (DB9) DCE
h. Remote access (DB9) DCE
