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Using More than Four CalPods
The CalPod User's Guide provides basic instructions for setting up a basic measurement system using CalPods. It assumes no more than one CalPod per PNA port. This web page provides information for using additional CalPod modules.
The CalPod dialog on the PNA only supports assigning CalPod modules to ports physically on a PNA instrument.
There are two ways to increase the number of "ports" on a PNA:
External switch matrix: an external switch matrix may be connected to a PNA to allow connection to a DUT with many ports. The PNA operates as a two or four port network analyzer. The external switch matrix is controlled independent of the PNA firmware.
Multiport test sets: Multiport test sets are more than an external switch matrix. The PNA firmware controls the switching of the multiport test set. Multiport test sets allow a PNA to become an N port network analyzer with PNA software automatically supporting calibration for all N ports. Multiport test sets for the PNA are NOT supported by the CalPod software at this time.
The CalPod software may be used to support an external switch matrix that connects the PNA physical ports to an expanded number of test ports. Typically, a separate measurement "channel" will be defined on the PNA for each combination of expanded test ports. Each channel will have its own calibration.
Limitation on number of CalPod modules
Connecting more than four CalPod modules to a controller
Using more CalPod modules than PNA physical ports
Last Updated: June 15, 2011