Nortel SONET AccessNode Manual page 28

2-10 DS3 tests, STS-1 tests, and optical in-bay tests
Procedure 2-2 (continued)
Measuring optical receiver performance
Step
Figure 2-1
DS3 or STS-1 test set connections to the temporary BNC I/O card
Rx In
2
AccessNode Vol 3B 323-3001-221 Issue 2.0
Action
DS3/STS-1 transmission test set
Press the Single Bit Error Inject button three times on the DS3/STS-1 test set.
The DS3/STS-1 test set displays 3 bit errors received.
If the errors are not detected, isolate the fault to the test cable or BNC I/O card
and replace the defective part, then repeat this step.
Leave the DS3/STS-1 test set connected to the BNC I/O card.
TL
LS
M
O
IN
Tx Out
Legend:
—continued—
FW-16202
DSX-3/STS-1 cross-connect panel
TL = Tracer lamp
LS = Local switch jack
M = Monitor coaxial jack
O = Output coaxial jack
In = Input coaxial jack
PC-16202