Service Guide 4-9
8719ET/20ET/22ET Start Troubleshooting Here
8719ES/20ES/22ES Step 2. Operator’s Check
RF Network Analyzers
Transmission Port Check (ET Models)
5. Connect an RF cable from the REFLECTION port to the TRANSMISSION port.
6. Press the following:
• If the message PRESS[CONTINUE] appears on the display during the test, that
particular attenuator setting check has failed. Press to check the
other attenuator settings.
• If the message FAIL appears on the analyzer display, the analyzer has failed the
TRANSMISSION port operation check. Refer to the flow charts on page 2-4 and
page 2-5.
• If the message DONE appears on the analyzer display, the analyzer has passed the
TRANSMISSION port operation check.
In Case of Difficulty
1. Make sure that the connection is tight. Repeat the test.
2. Visually inspect the connector interfaces and clean if necessary (see “Principles of
Microwave Connector Care” on page 1-6).
3. Verify that the short meets published specifications.
4. Substitute another short, and repeat the test.
5. Finally, refer to the detailed tests located in this section, or fault isolation procedures
located in the troubleshooting sections.
Preset
Preset
System
TESTS
22 x1
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