R&S FSH
Getting Started
Using the Network Analyzer
Quick Start Guide 1309.6269.12 - 09
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2.2 Using the Network Analyzer
R&S FSH models that feature a tracking generator can do two-port measurements like
measuring the gain or attenuation of devices under test.
The tracking generator generates a sine signal at the receive frequency of the
R&S FSH.
The R&S FSH provides scalar measurements with the basic configuration. To be able
to perform vector measurements you can equip the R&S FSH with firmware option
R&S FSH-K42 (order no. 1304.5629.02).
If the R&S FSH also has a VSWR bridge, you are able to perform reflection
measurements in addition to transmission measurements.
Test setup
Connect the device under test (DUT) to the R&S FSH.
For measurements on devices that require an external voltage (like power amplifiers),
connect the supply of a voltage from a suitable AC power supply to one of the BIAS
ports (R&S FSH with VSWR bridge only).
► Press the MODE key.
► Press the "Network Analyzer" softkey.
The R&S FSH turns on the tracking generator and starts the network analyzer
mode.
To get the most accurate results, you should calibrate the R&S FSH for the
measurement.
In its default state, the R&S FSH is factory calibrated. Factory calibration is a full 2-port
calibration over the complete frequency range. The status line reads
.
You will get sufficiently accurate measurement results with factory calibration, but if
you add a cable between the DUT and the test port, it is recommended to calibrate
again and take the cable characteristics into account this way.
Before starting the calibration, you should set the frequency and span because
calibration is valid only for the calibrated frequency and span.
► Press the FREQ key.
► Enter the required center frequency.
► Press the SPAN key.
► Enter the required span.
