Caring for Connectors
A
Keysight N4000/1/2A Operating and Service Manual
71
Using Connector Gages
Before a connector gage is used, it must be inspected, cleaned, and zeroed.
Inspecting and cleaning the gage
Inspect the connector gage and the gage calibration block carefully, exactly as
you have inspected the connector itself. Clean or replace the gage or the block if
necessary (dirt on the gage or block will make the gage measurements of the
connectors inaccurate and can transfer dirt to the connectors themselves,
damaging them during gaging or when the connection is made).
Zeroing the gage
Zero the gage by following the steps described below. Be sure that you are using
the correct connector gage and correct end of the gage calibration block for the
connector being measured.
– Hold the gage by the plunger barrel (not the dial housing or cap) and, for male
connectors, slip the protruding end of the calibration block into the circular
bushing on the connector gage. For precision 7 mm, female precision 3.5 mm
use the flat end of the gage calibration block. For female Type-N connectors,
use the recessed end of calibration block.
– Hold the gage by the plunger barrel only (
). Doing so will prevent
errors in gage readings due to the application of stresses to the gage plunger
mechanism through the dial indicator housing.
– Carefully bring the gage and gage block together, applying only enough
pressure to the gage and gage block to result in the dial indicator pointer
settling at a reading.
– Gently rock the two surfaces together, to make sure that they have come
together flatly. The gage pointer should now line up exactly with the zero mark
on the gage. If it does not, inspect and clean the gage and gage calibration
block again and repeat this process. If the gage pointer still does not line up
with the zero mark on the gage, loosen the dial lock screw and turn the
graduated dial until the gage pointer exactly lines up with zero. Then
re-tighten the lock screw.
