HP 83751A User Manual page 49

Generating a Millimeter Signal
If your sweeper was ordered with Option lEE, you have the capability of
using HP 83550 series millimeter head source modules with the sweeper. The
interface extender cable (HP part number 5062-7202) that is provided with all
option 1EE sweepers allows the source module to be positioned in front of the
sweeper.
After a source module is connected to the sweeper via the SOURCE MODULE
INTERFACE connector, the sweep will automatically configure itself for source
module operation when the line power is cycled, when the sweeper is preset,
or when a register is recalled.
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