JDS Uniphase SC-ADSL-A, User Manual

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Chapter 5 Copper Testing
Performing copper measurements
32 SmartClass ADSL/Copper Tester User’s Guide
9 Press the down arrow to move to RESISTANCE .
The test begins automatically and results appear on the screen.
10 Use the left and right arrow keys to change the pair.
11 Optional. To reset the high and low values, press the pound/hash (#) key.
12 If resistance is 4 k
Ω
or less, the Distance to Short is displayed.
13 Press the down arrow to move to LEAKAGE .
The test begins automatically and results appear on the screen.
14 Use the left and right arrow keys to change the pair.
15 Optional. To reset the high and low values, press the pound/hash (#) key.
16 Press the down arrow to move to OPENS .
This test measures the total electrical (capacitive) length of a pair.
The test begins automatically and results appear on the screen.
17 Use the left and right arrow keys to change the pair.
18 Press the down arrow to move to DC CURRENT .
The test begins automatically and results appear on the screen.
19 Optional. To reset the high and low values, press the pound/hash (#) key.
20 Press the down arrow to move to BALANCE .
Balance is a number representing the quality of the telephone circuit and
the degree to which the tip and ring conductors are electrically the same in
their ability to cancel noise. The balance measurement is used to identify
poor loop quality or cable bonding and grounding issues that allow exces-
sive loop noise.
The test begins automatically and results appear on the screen.
21 Optional. To reset the high and low values, press the pound/hash (#) key.
22 Press the down arrow to move to LOAD COIL .
The SmartClass ADSL/Copper Tester can detect up to five load coils that
may exist on the line, out to 27,000 (8,200 meters) feet. It will also report a
short, open, or a high noise condition, if detected. For accurate load coil
detection, disconnect the pair from the CO/exchange to remove CO
NOTE:
The unit will check for damaging voltages before performing the resistance
test. If detected, the unit will display “WARNING!
VOLTAGE DETECTED” and will not perform the test.
NOTE:
For the resistive distance to be accurate, it is critical that you enter the cor-
rect gauge and temperature on the COPPER SETUP menu. Use the aster-
isk/star (
∗ ) key to go directly to the COPPER SETUP menu.
NOTE:
When measuring from Tip or Ring to ground, you should connect the
ground lead to the shield (ground), and be sure to enter the fill type (in the
COPPER SETUP menu) or the distance will not be accurate. If you connect
to some other ground that is not parallel to your pair, and do not enter the
appropriate fill type, this measurement will be inaccurate.