7
Measure Distance to Fault (CAT Mode-Opt 305)
Required Equipment:
LOAD with correct connector type and gender to
terminate the end of the DUT.
Known length and cable type or Cable Loss
(dB/Meter) and velocity factor of the DUT.
Optional phase stable jumper cable or adapter to
connect the beginning of the DUT to the FieldFox.
1.
Connect any necessary jumper cable or adapter to
the FieldFox Port 1 connector.
2.
Press
Preset
then
Preset
3.
Then
Mode
then
CAT
4.
Then
Distance to Fault
5.
Press
Freq/Dist
then
Stop Distance
and enter the
length of the DUT.
6.
If a diplexer or other filter is in the measurement
path, press
Freq/Dist
and manually type the
Min
Start
and
Max Stop
frequencies. Otherwise, press
Meas Setup
then select
Frequency Mode
[Lowpass]
7.
Press
Cal 5
and follow the Cal prompts.
8.
Disconnect any components or antenna that should
NOT be measured and connect a LOAD at the end
of the DUT.
9.
Press
Meas Setup 4
then
DTF Cable
Specifications
.
10.
Either press
Recall Coax Cable
or enter the
Velocity Factor
and
Cable Loss
of the DUT.
11.
Connect the start end of the DUT to the FieldFox
Port 1. The DTF measurement is displayed.
