ADTRAN 239 H4R, Установка и эксплуатация, Страница: 17 / 28

Feature Details
61223445L2-5B 11
Splices that are varying in impedance cause the HDSL data pump to see a reduced and/or
fluctuating signal quality (margin). The HDSL data pump attempts to track these changes.
When the changes become too severe, errors or loss of synchronization result.
View Splice Results Screen
Access to the Bad Splice Detection feature is through the Troubleshooting screen, using the
craft access terminal of the H4TU-C or H4TU-R. Selecting the View Splice Results option from
the Troubleshooting screen menu displays the View Splice Results screen (see
Figure 2 ). The
Splice Detection Results column lists the reported results for each transceiver:
• NTF - Indicates that the unit is active and has not detected any problems, or, the number
of detected anomalies have not yet reached the detection count threshold. This threshold
facilitates the reporting of the result to this screen (eight is the present threshold).
• LOS - Indicates that the unit has not detected the remote unit.
• Number - Indicates if the number of times an anomaly was detected exceeds the detection
count threshold of eight. The number in this column represents the number of feet from
the transceiver (Reference Point) to the anomaly. This number also reflects the highest
anomaly count the unit sees, as it is possible to have more than one bad splice per circuit.
This screen reports the worst (most frequently detected) anomaly.
Example
In Figure 2 , the View Splice Results screen example shows that a detection has occurred
approximately 650 feet from an H4TU-C module on Loop 2 of the HDSL4 circuit.
Figure 2. View Splice Results Screen
Circuit ID:HTSVALHDSL4 MM/DD/YY hh:mm:ss
Press ESC to return to previous menu
* Note: Chronic Circuit Results are only valid after all other circuit *
* qualification tests have been performed and failed to show a trouble !! *
Splice Detector Version 1 Result Definitions:
---------------------------------------------
NTF - No Trouble Found yet.
LOS - Unit not in sync.
Number - Distance from Reference point (in ft.) of suspect splice.
Reference Splice Detection Results Version Result Shown
Point Loop 1 Loop 2 Number for date
--------- ---------- ---------- ------- MM/DD/YY
H4TUC NTF 650 01 --------
H4TUR NTF NTF 01 06/17/04
H4RU1 NET NTF NTF 01
H4RU1 CST NTF NTF 01 (B)Back