View Troubleshooting Screen; Troubleshooting Screen For A Doubler Application; Troubleshooting Screen Describing Circuit Problem - ADC HiGain HLU-432 User Manual

Provisioning

View Troubleshooting Screen

The Troubleshooting screen graphically analyzes the circuit and identifies any problem areas.
Press I at the Maintenance Terminal Main Menu to access the Troubleshooting screen. The Troubleshooting
screen (Figure 20) appears showing the HLU, the HRU and any doublers that are in the circuit (up to four).
TIME: 11:01:51
DATE: 04/14/00
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| | 1 |
>>>>| |=======|
<<<<| |=======|
|___| 2 |___|
NTWK HLU HDU1
AUTOUPDATE OFF
Figure 21 shows an example of a circuit that has identifiable problems. Symbols on the troubleshooting diagram
indicate the location of the circuit problems. The legend describes the type of problem.
TIME: 11:01:51
DATE: 04/14/00
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| |
>>>>| |=======|
<<<<| |=======|
|___|
NTWK HLU
SYMBOLS DESCRIPTIONS
) ( Loopback
X HDSL loop not in sync
(M) Low Margin Alarm
(I) High Insertion Loss
(C) HDSL Errored Second
(N) HDSL Unavailable Second
R Channel Reversal
E(R)R DS1 Errored Second
L(O)S DS1 Unavailable Second
AIS Alarm Indication Signal
AUTOUPDATE OFF
Figure 21. Troubleshooting Screen Describing Circuit Problem
36
TROUBLESHOOTING with HELP
CIRCUIT ID#:
___ ___
| 1 | | 1 |
|=======| |=======|
|=======| |=======|
2 |___| 2 |___|
HDU2 HDU3
SYSTEM OPERATIONAL
(E)xit (A)uto(U)pdate (B)ack (L)oopbacks
Figure 20. Troubleshooting Screen for a Doubler Application
TROUBLESHOOTING with HELP
CIRCUIT ID#:
___ ___
1 | | 1 |
|=======|
|=======|
2 |___| 2 |___|
HDU1 HDU2
SYSTEM OPERATIONAL
(E)xit (A)uto(U)pdate (B)ack (L)oopbacks
___
| 1 | | 1 |
|=======| |=======|
|=======| |=======|
2 |___| 2 |___|
HDU4
___ ___
| 1 | | 1 |
|=======| |=======|
|=======| |=======|
2 |___| 2 |___|
HDU3 HDU4
TROUBLESHOOTING
) - Network loopback; ( - Customer loopback
Bad connection
Poor HDSL signal, long loop, interference
Long loops, bridged taps
Shorts, interference, noise
Shorts, interference, noise
Channel Reversal nearest HLU is displayed
Errors include BPV, framing and CRC
Loss of T1 signal
Far end LOS, HDSL LOSW, loopbacks or MAL
July 18, 2002
150-432-100-02, Revision 02
HDSL Loop 1
___
|
|>>>>
Signal direction
|<<<<
HRU CUST
HDSL Loop 2
Doubler 4
___
| 1 | |
|=======| |>>>>
|=======| |<<<<
2 |___|
HRU CUST
HLU-432 List 1