Fluke DTX-1800, Technical Reference Handbook

Page: 315 / 398

Custom Test Settings
Changing the NVP
12-11
12
4 Select Twisted Pair or Coax.
5 Do one of the following:
6 To change the NVP for the selected cable type, select
NVP on the Twisted Pair or Coax menu.
7 To change the NVP for a custom twisted pair cable
type, create a custom cable type or select one for
editing; then select NVP on the Custom screen. See
page 12-1 for details on creating custom cable types.
8 Connect a known length of twisted pair or coaxial
cable to the tester. The cable should be at least 30 m
(100 ft) long.
9 Press
P
.
10 Use
AD
to change the NVP until the
measured length matches the known length of the
cable; then press
N
.
Resetting the NVP to the Default Value
You can reset the NVP to the default value defined by the
selected cable type by re-selecting the cable type in SETUP.
To reset the NVP to the default value:
1 Turn the rotary switch to SETUP; then select Twisted
Pair or Coax.
2 On the Twisted Pair or Coax menu, select Cable Type.
3 If you selected Twisted Pair, select the cable group that
contains the desired cable type.
4 Select a cable type on the Cable Type menu. The NVP
value on the Twisted Pair or Coax screen returns to the
value defined by the cable type.