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Making Measurements
Characterizing a Duplexer (ES Analyzers Only)
Characterizing a Duplexer (ES Analyzers Only)
This measurement example demonstrates how to characterize a 3-port device, in this case
a duplexer, using four-parameter display mode. You must use a test adapter or a special
3-port test adapter to route the signals from the analyzer (a two-port instrument) to the
duplexer (a three-port device). This example procedure is performed using one of the
following test adapters:
❏ 8720D Option K36 Duplexer Switching Test Set
❏ 8720D Option K39 3-Port Switching Test Set
Definitions
The following abbreviations are used in reference to a duplexer:
Tx Transmitter port
Ant Antenna port
Rx Receiver port
Procedure
1. Press .
2. Connect the test adapter to the analyzer according to the instructions for your
particular model. Connect any test fixture or cables to the duplexer test adapter. Refer
to Figure 1-40.
Figure 1-40 Duplexer Connections
Preset
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