MA25400A mm-Wave Module 2-2 MA25400A mm-Wave Module and Bracket
VectorStar ME7838x/x4 Modules RM PN: 10410-00311 Rev. F 2-5
Use Suggestions
• The flange interface is based on a standard UG-387 waveguide flange and one connects to it by first
lining up the alignment pins and then mating the flanges.
• Standard captive waveguide screws are used with an exposed shank. This is useful since both mating
flanges may have threaded holes. Thread the screws all the way into the mating flange (so the shank
clears) before mating to the module. This simplifies assembly and avoids cross-threading.
• Use a 6 N-cm torque wrench for these screws (one is in the accessory kit). Tighten in a star pattern (or
slowly tighten opposite sides sequentially when using two screws).
• Certain mating devices (like the 33GG50 thru and on-wafer probes) have center pins that can move
laterally if bumped. Be sure the pins are roughly centered (using the magnifying loupe in the accessory
kit or a microscope) before mating.
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