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Changing the connector type or exiting Length Mode will store
the adjusted length constant in the unit’s memory for the next
test. Up to three length constants can be stored, one of each
connector type.
Length Constant Accuracy
The length constant refers to the electrical parameter used to measure
length, in this case, the capacitance of the cable per foot or meter.
Accuracy is dependent on how close the instrument can be set to the
cable constant for the cable being measured.
The length constant can vary from cable to cable, of the same type
produced by the same manufacturer. It can also vary over the length
of one cable because the length constant is dependent on the physical
properties of the cable, which may not be consistent throughout the entire
cable. The change in wire pair spacing through the cable can vary the
length constant along the length of the cable.
