ADTRAN 3192 H4TU-C, Установка и эксплуатация

Страница: 17 / 30

61223404L2-5A Issue 1, December 2003 17
Selecting option 1 from the
Troubleshooting
screen
causes the H2TU-C to read the operational status of the
card and return
Troubleshooting Guidance
, or hints, as
to the probable cause of the trouble, as shown in Figure
24 .
Selecting option 2 from the
Troubleshooting
screen
accesses the
General Information
screen ( Figure 25 )
that summarizes the deployment guidelines necessary
to provision this HDSL4 circuit.
Figure 24. Troubleshooting Guidance
Figure 25. General Information Screen
Circuit ID: 11/03/03 09:29:45
Press ESC to return to previous menu
DSX-1 Loss of Signal (Red Alarm)
- Patch test set REC jack into H4TUC MON TX jack to verify integrity of
signal to the H4TUC from the network (verify test set in MON mode).
- If signal to H4TUC is missing, insert test set at DSX panel IN Jack connecting
toward H4TUC (to verify wiring between DSX and H4TUC shelf). Check H4TUC to
verify DSX-1 LOS alarm is cleared. This verifies TX(out) and RX(in) pairs are
not swapped.
- If signal from DSX OK, verify cross-connect wiring at DSX panel is turned over
(OUT to IN) and (IN to OUT).
-If DSX wiring OK, connect test set REC to the DSX MON, network side equipment,
to verify signal from network (verify test set to MON). If no signal,
troubleshoot office problems.
For Total Access cards verify the following:
- Provisioning>Network Source is configured correctly for Mux or DSX operation.
- Provisioning>Service State is not configured for OOS-Unassigned.
- Mux card is mapped correctly.
- Mux card is functioning correctly.
Circuit ID: 11/03/03 09:29:45
Press ESC to return to previous menu
HDSL4 Loop Guidelines for optimum operation
-------------------------------------------
Non-loaded cable pair
Single bridge tap < 2Kft
Total bridge taps < 2.5Kft
Power influence <= 80 dBrnC
Longitudinal Balance >= 60dB (If using Wideband test at 196 Khz >= 40dB)
Foreign DC Voltage (t-r,t-g,r-g) < 3VDC
Loop Resistance <= 1000 ohms 1st segment
Loop Resistance <= 920 ohms 2nd segment
The following guidelines are provided as a recommendation and may be superseded
by internal deployment guidelines
Margin >= 6 dB
Attenuation (1st Segment) H4TUC <= 30 dB, H4TUR/H4R <= 32 dB
Attenuation (2nd or 3rd Segment) H4TUR/H4R <= 28dB