JDS Uniphase OneExpert DSL, Руководство пользователя

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Chapter 10 Test Results
Copper results
OneExpert DSL User’s Guide
88
22052280, Revision 001 April 2014
Resistance
You measure resistance to test line continuity and quality, and to detect corrosion, shorts, opens,
and faults.
The OneExpert DSL is able to measure resistance in the presence of noise and foreign voltage, but
the accuracy may be reduced, depending on the noise level.
Resistance should be measured with the line disconnected, so that the battery voltage and CO/
Exchange termination don't affect the measurement.
Normal resistance should be at least 5 M

; lower values indicate the presence of faults.
Table 22 describes the resistance result.
Distance to short
This result measure the distance to the short. A resistance measurement of 4 k

or less typically
indicates a short. For values greater than 4 k

, this function is disabled.
Table 23 describes the distance to short result.
Leakage
Leakage is a resistance measurement using higher voltage.
Table 24 describes the leakage result.
Table 22 Resistance result specifications (no ambient)
Range (

) Resolution (

) Accuracy
0 to 999 1 2% ± 2.5

1.0K to 9.99K 10 2%
10.0K to 99.9K 100 2%
100.0K to 999K 1K 2%
1.0M to 9.9M 10K 6.5%
10.0M to 100M 100K 10%
Table 23 Distance to short result specifications
Range (feet) Resolution Range (meters) Resolution
0 to 3000 30 feet 0 to 999 9 meters
3000 to 30,000 100 feet 1000 to 10,000 30.5 meters
Table 24 Leakage result specifications (no ambient)
Range (

) Resolution (

) Accuracy
0 to 49.99 1 2% ± 2.5
