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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:
❏ 8753D Option K36 Duplexer Test Adapter
❏ 8753D Option K39 3-Port Test Adapter
❏ 8753ES Option H39 3-Port Test Adapter (use the same instructions as those for K39 mode)
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
3. Set up channel 1 for the Tx-Ant stimulus parameters (start/stop frequency, power level, IF bandwidth). In
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