Vvm Calibration; Zeroing; 1-Port Cable Trimming Measurement - Keysight N9912A User Manual

How to set Single or Continuous
 Press Sweep 3.
 Then choose one of the following:
 You can also use Run / Hold +/- to toggle between Single and Continuous.

VVM Calibration

In VVM Mode, calibration is performed in the same manner as in CAT and NA Modes.
In summary, a Preset Cal is sufficient when the DUT is connected directly to the
FieldFox RF Out test port. When using an adapter or jumper cable to connect the
DUT, first perform a QuickCal + Load or OSL Cal before making measurements.
Learn more about these FieldFox calibrations on page 52.
To make an accurate measurement, set

Zeroing

When performing a Cable Trimming operation, one cable is compared to another.
After measuring the first, shorter cable, pressing Zero performs the same operation
as Data->Memory, then Data/Mem, also known as Normalization. All subsequent
electrical length measurements are relative to the stored measurement.
To make an accurate measurement, set
Zero after changing the IF Bandwidth.
How to select Zeroing
 Press Meas Setup 4
 Then
 Then
 Select
1-Port Cable Trimming Measurements
A 1-Port Cable Trimming measurement is used in a cable fabrication procedure to
validate proper electrical length.
144
Automatically sets Continuous OFF and causes FieldFox to make ONE
Single
o
measurement, then hold for the next Single key press. When a data trace is
displayed, the entire trace is measured, then holds. The
changes to an arrow -->
Makes continuous measurements. This is the typical setting when
Continuous
o
battery power is not critical.
Zero Ref
Open – select to display Phase = 0.0 Deg when zeroed.
o
Short - select to display Phase = 180.0 Deg when zeroed.
o
Zero ON
to turn zeroing off.
Zero OFF
o
while the measurement occurs.
before calibrating.
Zero OFF
before calibrating.
Zero OFF
Hold annotation
FieldFox User's Guide