Splice Histogram. ADTRAN DS1, H2TU-C-231, E220 HFAC HDSL2, DSX 1, 1223024L2, 1181113L2, 1223004L12, 1223004L2, 1223026L2, 1223001L2

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

The (

B

) Back command will allow the technician to scroll back through the last 14 days Splice

Detection Results.

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

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 Version Result Shown

Point Results Number for date

--------- ---------------- ------- MM/DD/YY

H2TUC 0250 01 --------

H2TUR NTF 01 03/01/05

(B)Back

Figure 45. View Splice Results Screen

Splice Histogram

The Splice Histogram Screen ( Figure 46 ) displays the counters that the splice detector uses to

make its result decision. For HDSL2, it displays six columns. The first and fourth columns, labeled Splice (feet), represent the distance away from the respective transceiver that the anomaly detector is evaluating. Columns 2 and 5 display the counters incremented by an

H2TU-C module when it detects an anomaly. Columns 3 and 6 display the counters incremented by an H2TU-R module when it detects an anomaly.

In this example, the distances shown are corresponding to an H2TU-C module since that is the transceiver that has detected the anomaly. The count of 09 in the 250 feet row under the

H2TU-C column indicates that an anomaly has been seen nine times at this distance from an

H2TU-C module. Since nine is larger than the count detection threshold of eight, this result is reported to the Splice Result screen. Since the H2TU-R column shows 00 for all counts in columns 3 and 6, there is no reason to change (

C

) the view of the distance column to show the distances an H2TU-R module is evaluating.

44 61223HDSL2L2-5B