Troubleshooting With Help - ADC HiGain HLU-432 User Manual

150-432-100-02, Revision 02
To display the circuit Help diagram
and the corresponding troubleshooting tips are located beneath the Help diagram. A troubleshooting symbol on
the diagram identifies the location of a problem.
Those legend symbols which appear in parentheses are also keyboard commands for obtaining additional
information.
•
Press M to display margin values for the circuit.
•
Press I to display the insertion loss values for the circuit.
The Troubleshooting screens use the following navigational keyboard commands:
• Press the H (Help),
troubleshooting screen.
•
Press E to return to the Maintenance Terminal Main Menu.
• Press B to return to the main Troubleshooting screen from the Help, Margin Values or Insertion Loss screens.
• Press U to update a screen.
• Press A to automatically update the screen. (Press
Troubleshooting screen indicates whether AutoUpdate is on or off.
•
Press L to directly access the Loopback menu (see
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
HLU-432 List 1
(Figure 22), press
M (Margin Values), or I

TROUBLESHOOTING with HELP

CIRCUIT ID#:
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HDU1 HDU2
SYSTEM OPERATIONAL
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
(E)xit (A)uto(U)pdate (B)ack (L)oopbacks
Figure 22. Troubleshooting with Help
July 18, 2002
H . The symbol legend used to describe all circuit events
(Figure 23 on page 38)
(Figure 24 on page
(Insertion Loss) toggle keys to enter or exit the respective
A again to deactivate automatic update.) The
"Loopback Mode Screen" on page
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HDU3 HDU4
Provisioning
38)
25).
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HRU CUST
37