3-18
Service Guide E8364-90026
Tests and Adjustments
PNA Series Microwave Network Analyzers
Preliminary Checks
E8362B, E8363B, E8364B
Cable Connector Repeatability Check
NOTE
The connector repeatability measurement should be done at the test port as
well as at the end of the test port cable.
1. With the test port cable still connected to Port 1, connect a broadband load to the other
end of the cable.
2. Press
Preset
.
3. On the
Channel
menu, click
Average
. In the
Average
dialog box, click the
Average ON
check box. In the
Average Factor
box, type 100 or click the arrows to select 100. Click
OK
.
4. Wait for the analyzer to average the measurement 100 times (approximately five
seconds).
5. To normalize the data trace:
a. On the
Trace
menu, click
Math/Memory
.
b. In the
Math/Memory
dialog box, click the
Data->Memory
button.
c. In the
Data Math
list, select
Data/Memory
.
d. Under
Trace View Options
, make sure
Data Trace
is selected.
e. Click
OK
6. To adjust the display scale:
a. On the
Scale
menu, click
Scale
.
b. In the
Scale Per Division
box, click the arrow to select
0.5 dB
.
c. In the
Level
box under
Reference
click the arrow to select
0 dB
.
d. Click
OK
.
7. Disconnect and then reconnect the cable to the test port. Tighten the connection to the
specified torque for the connector type.
8. On the
Channel
menu, click
Restart
Avg
.
9. Look at the trace for spikes or modes.
10. To re-normalize the data trace of the reconnected cable:
a. On the
Trace
menu, click
Math/Memory
.
b. In the
Math/Memory
dialog box, click the
Data->Memory
button.
c. Click
OK
.
11. Repeat steps 7 through 9 at least three times to look for modes. Modes appear when a
harmonic of the source fundamental frequency is able to propagate through the cable or
connector. It is helpful to print a plot of the trace each time to compare several
connections. If any mode appears each time the cable is connected and reconnected,
measurement integrity will be affected.
For a typical response of cable connector repeatability, see
Summary of Contents for E8362B
Page 11: ...Service Guide E8364 90026 1 1 1 Safety and Regulatory Information ...
Page 19: ...Service Guide E8364 90026 2 1 2 General Product Information ...
Page 33: ...Service Guide E8364 90026 3 1 3 Tests and Adjustments ...
Page 83: ...Service Guide E8364 90026 4 1 4 Troubleshooting ...
Page 151: ...Service Guide E8364 90026 5 1 5 Theory of Operation ...
Page 185: ...Service Guide E8364 90026 6 1 6 Replaceable Parts ...
Page 269: ...Service Guide E8364 90026 7 1 7 Repair and Replacement Procedures ...
Page 351: ...Service Guide E8364 90026 8 1 8 General Purpose Maintenance Procedures ...