User`s guide

Diagnosing and Troubleshooting the DL3100 6-5
6
Figure 6-2 HVDB Tests Menu
NET/DTE Loopback
The NET/DTE loopback is a bi-directional loopback that loops the received
DTE signal back to the DTE, and the signal from the T3MB back towards
the T3MB. This loopback veriÞes operation of the following:
¥ The DTE and associated cabling
¥ The DTE Board
¥ The link between the DTE board and the T3MB
To initiate a test:
▼ Select DTE/Network Loopback and use the space bar to toggle
to On. With On in the display, select ConÞrm and press
Return.
To cancel a test that is running:
WARNING: Running loopback tests will interrupt traffic to the
DL3100.
NOTE: The NET/DTE Loopback is performed on a single DTE at a
time: HSDB/HVDB 1, 2 or 3.