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Remote Port Payload Loopback
This selection initiates a payload loopback on the remote OSU 300
for all data on the selected port. Perform this test to verify the
integrity of the portion of the DS3 link connecting the local DTE
and the selected port of the remote OSU 300. All other ports on both
the local and remote units are unaffected.
Remote Payload Loopback with BERT
Perform this test to verify the integrity of the link between the
selected port of the local OSU 300 and the corresponding remote
OSU 300 port. During this test, the remote unit loops back all data
for the selected port, while the local unit sends and checks the
selected BERT pattern. The loopback point and the signal paths for
the remote OSU 300 are the same as the payload loopback test for
the local OSU 300 (shown in Figure 6-5 on page 6-5).
Quad DSX-1 Diagnostic Options
The menu shown in Figure 6-9 appears if the selected port is a
Quad DSX-1. Descriptions of the menu selections follow the figure.
Data Mode
Ends a test already in progress.
61200663L1-1
Figure 6-9. Quad DSX-1 Diagnostics Menu
OSU 300 User Manual
Chapter 6. Diagnostics
6-7
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