Maintenance
4-26
3160-A2-GB21-80
March 1999
Starting a Repeater Loopback
The Repeater Loopback command (RLB) loops the signal being sent to the
network back to the DTE Drop/Insert (DSX-1) and data ports. The signal is
looped back as close to the network interface as possible (after it has passed
through the framing circuitry of the DSU/CSU). Framing CRCs and BPVs are
corrected.
496-14318-02
CSU
DSU
NETWORK
INTERFACE
DTE
(DSX-1)
RLB
PORT 1
PORT 2
ALL 1s
Procedure
To perform a Repeater loopback:
1. From the top-level menu screen, select Test.
2. From the Test screen, select Lpbk.
F1
Test:
Rlpbk Lpbk
Ptrns
F2
F3
3. From the Loopback screen, press the
key until the RLB selection
appears on the screen.
4. Select RLB.
F1
Loopback:
PLB
DLB
RLB
F2
F3
Test Started
appears on Line 2. If a Repeater loopback is already in
progress, the
Already Active
message appears. If an invalid combination
of loopbacks is in progress, the error message
Invld Test Combo
appears
(see
Table 4-8
for valid loopback test combinations).
Содержание ACCULINK 3160
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