Keysight Technologies FieldFox B Series User Manual page 595

VVM (Vector Voltmeter) Mode - Option 308
2-Port Transmission Measurements
2-Port Transmission Measurements
A 2-Port Transmission measurement is used for measuring electrical length,
insertion loss, gain, or isolation of a DUT at a single CW frequency. The
FieldFox signal source is transmitted out the port 1 connector, through the
DUT, and into the port 2 connector. In the following image, the gain of an
amplifier is being measured.
Figure 24-3 2-Port Transmission measurement of an amplifier
How to make a 2-Port Transmission Measurement
1. Press Mode then
2. Press Freq/Dist and enter the measurement frequency.
3. Press Meas Setup 4 then
4. Calibrate the FieldFox using one of the methods described in
5. Connect the DUT.
Notes:
— The magnitude value is the gain (positive value) or the loss (negative value)
— The phase value is the difference in phase (in degrees) between the DUT
— To measure isolation of the amplifier, reverse the connection to the amplifier
Keysight N9938-90006 User's Guide
VVM
devices. Select Low for amplifiers.
Calibration" on page 591. Before performing a Mechanical Cal, press Meas
Setup 4 then Zero OFF.
of the DUT.
input and output.
(PORT 1 to the amplifier output).
then 2-Port Transmission.
More then Output Power. Select High for passive
"VVM
595