Installation and Service Guide N5251-90001 2-7
PNA Series Microwave Network Analyzer System
N5251A
System Description
Millimeter-Wave Test Head Modules
M
illimeter-Wave Test Head Modules
A pair of 67-110 GHz millimeter-wave test head modules, in conjunction with the N5261A or
N5262A millimeter head controller, is used to make reflection, transmission, or S-parameter
measurements at millimeter wave frequencies with the N5227A PNA. These test head modules
are manufactured by OLM, Inc.
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The N5251A system measurement ports, Port 1 and Port 2, are in the left and right millimeter-
wave test head modules, respectively.
The left and right test head modules are illustrated in Figure 2-5 on page 2-7. Each test head
consists of a combiner assembly and a waveguide module. The combiner assembly contains a
coupler and combiner, and a bias-tee. The multiple-connector panels provide connections
between the test head module, the N5261A or N5262A millimeter head controller, and the
N5227A PNA.
Figure 2-5 Left and Right Millimeter-Wave Test Head Modules
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