Limited Port Mapping

Beginning with PNA Rev A.09.00, the IMD, IMDx, IMSpectrum, and IMxSpectrum Apps have a limited port mapping capability. This would allow you, for example, to simultaneously measure two 2-port DUTs in different channels.  You could input the 2-tone signal to port 1 and port 3. The DUT output would be connected to port 2 and port 4.

Port selections are made on the Power Tab for each Application.

Note: This setup requires an external combiner connected to the rear-panel. The external combiner that is shown has two inputs and two outputs. This can also be accomplished by using two components.

This example setup shows a 4-port transceiver connected to the PNA ports as follows:

Notes

• When DUT Input = PNA port 1, then DUT Output = PNA port 2 (default) OR port 4.

• When DUT Input = PNA port 3, then DUT Output = PNA port 4.

• Each port mapping configuration must be setup in separate channels.

• The input and output frequencies for each channel can be at different frequencies.

• The Path Configuration settings are made automatically.

• Calibration is performed normally using the IMD Cal Wizard.

• Because an external combiner is used, input power to the DUT must be monitored by you to ensure that the DUT is not being overdriven.

• Both input tones must be supplied by the internal PNA sources.

• A mixer LO can be a PNA internal source, an external source, or an embedded LO.

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