View Splice Results Screen - ADTRAN 1181113L2 Installation And Maintenance Practice

HDSL2 for General Distribution Installation and Maintenance Practice i Enhanced Feature Overview
Splices that are varying in impedance will cause the HDSL data pump to see a reduced and/or
fluctuating signal quality (margin). The HDSL data pump will attempt to track these changes,
but when the changes become too severe, errors or loss of synchronization result. This is
reflected by the symptoms described on this screen.
If a circuit meets these criteria, the possibility of an impedance-varying splice should be
considered.
Three choices are provided on the Chronic Circuit screen:
1. View Splice Results
2. View Histogram Screen
3. Reset Splice Detector
Choosing option 3 will prompt to make sure a reset is desired. If Y (yes) is chosen the splice
detector will re-initialize and start running again.
View Splice Results Screen
Selecting the View Splice Results option from the menu displays this screen (Figure B-3).
Results will be reported in the Splice Detection Results column for each transceiver:
• NTF - Reported if the unit is active and no problems have been detected or the number of
anomalies detected have not yet reached the detection count threshold, which facilitates the
reporting of the result to this screen. (Eight is the present threshold.)
• LOS - Reported if the remote unit has not been detected.
• Number - Reported if an anomaly has been detected a number of times that exceeds the
detection count threshold of eight. The number shown in this column represents the
number of feet from the transceiver (Reference Point) to that anomaly. This number will also
reflect the highest anomaly count seen, as it is possible to have more than one bad splice
per circuit. This screen will report the worst (most frequently detected) anomaly.
In this example, a detection has occurred approximately 250 feet from an H2TU-C module.
The (B) Back command will allow the technician to scroll hack through the last 14 days Splice
Detection Results.
B-5 61223HDSL2L2-5B