Agilent Technologies 11644A Series, User'S And Service Manual

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X, P, and K 11644A 4-5
Use, Maintenance, and Care of the Devices
Connections
Connections
Good connections require a skilled operator. Slight errors in operator technique can have a
significant effect on measurements and measurement uncertainties. The most common
cause of measurement error is poor connections.
The following procedures illustrate how to make good connections.
Waveguide Devices
IMPORTANT Unlike threaded devices, the WR-90, WR-62, WR-42 waveguide mating
planes are flanges (often precision) that you must carefully screw together.
Always connect waveguide in the same flange orientation. For example, use
the label as a reference and always connect a device with the label facing the
same direction.
Precision Flanges
A precision flange has four corner screw holes and two precision alignment holes, as shown
in
Figure 4-2 . A non-precision flange has only four corner screw holes.
Figure 4-2 Precision Alignment Holes