AK500 System Installation and User's Guide
Positron Access Solutions 83 Document 180-0037-003 R01
2.3.9 Diagnostic
Diagnostics can be run on the AK500 system. There are two types of tests:
Single Ended Loop Test (SELT) and Dual Ended Loop Test (DELT).
2.3.9.1 SELT
Single Ended Loop Test (SELT) provides diagnostics for each pair. Follow this
procedure to run SELT:
1 SELT is service effecting. The remote unit must be disconnected
2 The Pairs need to be calibrated. To get distance from the chassis,
remove the MSPAN connector from the chassis. If removal of the MSPAN
connector is not possible, calibration can be done at any point in the loop,
including the MDF. This point will be the start of the Line Length test.
to run
the test.
3 Click on the Calibrate button to start the calibration process. The Status of
the calibration is indicated.
4 Connect the pairs back to the Outside Plant. Ensure that the remote unit
is NOT connected.
5 Click on Start Testing button to run the SELT test. The Status of the SELT
test is indicated.
6 The results can be exported to an Excel csv file by clicking on the Export
Test Result button.
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