Agilent Technologies NFA Series, Performance Verification And Calibration Manual

Page: 49 / 184

Chapter 2 37
Test Descriptions
Input VSWR
Measuring Input VSWR from 20000 MHz to 26500 MHz
Step 1. Connect the test equipment as shown in Figure 2-6 on page 35.
Step 2. Set the Network Analyzer Start/Stop to measure the DUT’s input VSWR from
20000 MHz to 26500 MHz.
Press the
Start
key and then
2
,
.
,
0
,
G/n;
then press the
Stop
key and
2, 6
,
.
,
5
,
G/n
Step 3. Set the fixed frequency of the NFA to 23 GHz (press the
Frequency/Points
key and
then
Fixed Freq
,
2, 3, GHz
).
Step 4. Restart the measurement sweep on the DUT (press the
Restart
key).
Step 5. Using the marker peak function on the network analyzer, determine the maximum
displayed VSWR over the measured frequency range (press the
Marker Fct
n key,
Mkr Search [ON]
then
Search: Max
).
Step 6. Record the maximum displayed signal frequency and VSWR on the Test Record.
Step 7. Verify that the measured VSWR from 20000 MHz to 26500 MHz is within the
published specification.