3
Measure Return Loss (CAT Mode)
Return loss can be thought of as the absolute value of
the reflected power as compared to the incident power.
When measuring an OPEN or SHORT, all incident power
is reflected and 0 dB return loss is displayed.
When measuring a LOAD, very little power is reflected
and values of 40 dB to 60 dB are displayed.
1.
Connect the Device Under Test (DUT).
2.
Select
Preset
then
Preset
Returns the FieldFox to
known settings.
3.
Select
Mode
then
CAT
(Cable and Antenna Test)
4.
Then
Return Loss
(Default measurement).
5.
Press
Freq/Dist
and enter
Start
and
Stop
frequency
values of the measurement.
6.
Press
Meas Setup 4
then
Settings
to make
appropriate settings before calibrating.
7.
Disconnect the DUT and press
Cal 5
then follow the
calibration prompts.
8.
Reconnect the DUT (cable to be tested).
Optional
Add Markers – All Modes except VVM and Power
Meter
Add Limits – All Modes except VVM and Power Meter
Save Settings and Data – All Modes
