PA2201A I/O, Trigger, Reference In and AC Mains Power Input Markings
The outer shell of the Ref In, Trig In and Trig Out SMA connectors are connected directly to
chassis. The maximum voltage that may be applied to the center conductor of these terminals
with respect to the outer shell/chassis is 5 V.
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Keysight IntegraVision PA2200 Series Power Analyzers Operating and Service Guide