Service Guide 2-11
8719ET/20ET/22ET System Verification and Performance Tests
8719ES/20ES/22ES Preliminary Tests
RF Network Analyzers
Cable Insertion Loss
1. Keep the test port cable connected to PORT 1 (REFLECTION port on ET models).
2. Connect an RF short to the other end of the cable.
3. Press to find the worst-case insertion loss. The
displayed response is twice the actual loss. Divide the response by two and refer to the
cable manual to see if it meets the insertion loss specification. If the insertion loss
specification is not met, the cable should be either repaired or replaced. For an example
of a typical insertion loss measurement, see Figure 2-4.
Figure 2-4 Typical Insertion Loss Measurements of Cables
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