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4 Install the Phase-Lock assembly in the HP 33120A chassis.
Before installing the Phase-Lock assembly, make sure that the red and
black wires for the instrument fan are clear of the rear-panel holes.
With the Phase-Lock assembly positioned trace side up, insert the two
BNC
connectors through the holes previously cut in the rear-panel label.
Top View
Side View
5 Secure the Phase-Lock assembly in place.
As shown above, place one lock washer and one hex nut (included with
the retrofit kit) on each of the two BNC connectors. To prevent cross-
threading, be sure to hand-tighten the hex nuts at least one turn before
using a tool.
Trace Side Up
Lock Washer
(2190-0699)
Hex Nut
(2940-0256)
3
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