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Opens Test
The Opens test performs a true three-terminal test on a pair. To run the test,
you need to choose the appropriate Cable Type (see Table 4-4).
You do not need to provide the"D" Factor (or TG /TR Capacitance
Ratio) or have to ground a percentage of spares in the cable to get an
accurate distance reading, as you do with conventional 2-terminal
meters. The CopperPro actually measures the Capacitance Ratio of
the pair during the Opens Test.
The Opens Test performs a measurement of the capacitive length of the pair,
as well as the capacitive balance between the Tip and Ring conductors.
Setting Up an Opens Test
To set up an Opens test, see the instructions under "Displaying a Setup Menu"
in Chapter 3. Refer to Table 4-4 for setup parameters for the Opens test.
Parameter
Cable Type
Cap. Balance Pass Threshold
POTS Testing and Fault Location
Table 4-4. Opens Test Setup Parameters
Jelly Filled, Air Core, JKT, 5 Pr. Buried
Drop, 2 Pr. Buried Drop, 1 Pr. Aerial Drop,
1 Pr. Universal Drop, or Custom.
≥95 %
The POTS Toolbox
Note
Setting (default in bold)
(Range = 0 to 99)
4
4-15
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