Chapter 2
29
Test Descriptions
Input VSWR
Measuring VSWR from 10 MHz to 500 MHz
Step 1. Connect the test equipment as shown in Figure 2-4 on page 28.
Step 2. Set the Network Analyzer Start/Stop frequencies from 10 MHz to
500 MHz.
Press the
Start
key then
1, 0,
M/µ;
then
press the
Stop
key and
5, 0, 0
M/µ
.
Step 3. On the NFA ensure that the preset is set to the factory settings (press
the
System
key and
More
,
Power On/Preset
,
Power On (Preset)
and
Preset (Factory)
).
Step 4. On the NFA press the
Preset
key and wait for the routine to finish
Step 5. Set sweep to single (press the
Sweep
key and
Sweep Mode: Single
).
Step 6. Set the frequency mode to fixed (press the
Frequency/Points
key and
Freq Mode
,
Fixed
).
Step 7. Set the fixed frequency to 250 MHz (press the
Frequency/Points
key and
Fixed Freq
,
2, 5, 0
,
MHz
).
Step 8. Restart the measurement sweep on the DUT (press the
Restart
key).
Step 9. Set the Network Analyzer to autorange (press the
Scale Ref
key and
Auto Scale
).
Step 10. 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 and
Mkr Search [ON]
,
Search: Max
).
Step 11. Record the maximum displayed signal frequency and VSWR on the Test
Record.
Step 12. Verify that the measured VSWR from 10 MHz to 500 MHz is within the
published specification.
Summary of Contents for N8972A
Page 9: ...ix Declaration of Conformity N8972A ...
Page 10: ...x Declaration of Conformity N8973A ...
Page 11: ...xi Declaration of Conformity N8974A ...
Page 12: ...xii Declaration of Conformity N8975A ...
Page 19: ...Contents xix ...
Page 20: ...xx Contents ...
Page 108: ...88 Chapter2 Test Descriptions Measurement Jitter ...
Page 124: ...104 Chapter3 Technical Specifications General Specifications ...
Page 136: ...116 AppendixA Model N8972A Test Records Measurement Jitter Test Record ...
Page 148: ...128 AppendixB Model N8973A Test Records Measurement Jitter Test Record ...
Page 160: ...140 AppendixC Model N8974A Test Records Measurement Jitter Test Record ...
Page 174: ...154 AppendixD Model N8975A Test Records Measurement Jitter Test Record ...