User Manual

Calibrating Length Measurements

Determining a Cable’s Actual NVP

You can determine a cable’s actual NVP by adjusting the

measured length to match a known length of cable.

To determine a cable’s NVP:

1 Connect a known length of the cable to be tested to

the tester’s twisted pair or coaxial connector. The

cable length must be as follows (as measured using

the tester’s default NVP values):

• Twisted pair: 34.4 ft to 689.7 ft (10.5 m to

210.2 m)

• Coaxial: 40.3 ft to 807.9 ft (12.3 m to 246.2 m)

Tip: For maximum accuracy and adjustment resolution,

use a cable between 45 ft and 70 ft (14 m and

21 m) long.

Note

The cable must not be connected to a wiremap

adapter, port, or other device.

2 Turn the rotary switch to SETUP.

3 Use

D to highlight Length Calibration; then press

H or J.

4 To set the NVP for coaxial cable, press K

5 Press H or J; then use D A to change the

NVP until the measured length matches the actual

length of the cable.

6 Press

H to save the NVP value.