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Electronic Calibration Modules Reference Guide 4-17
Use, Maintenance, and Care of the Devices
Making Connections
Making Connections
Good connections are essential for accurate calibrations and measurements
and require a skilled operator.
The most common cause of measurement
error is poor connections.
1.85 mm, 3.5 mm, 2.4 mm, 2.92 mm, and Type-N Devices
1.
Handle the devices at a static-safe work station, only. See
2.
Carefully align the connectors. The male connector center pin must slip
concentrically into the contact finger of the female connector.
3.
Push the connectors straight together and tighten the connector nut
finger tight. Do not twist or screw the connector together. As the center
conductors mate, there is usually a slight resistance
4.
The preliminary connection is tight enough when the mating plane
surfaces make uniform, light contact. Do not overtighten this connection.
A connection in which the outer conductors make gentle contact at all
points on both mating surfaces is sufficient. Very light finger pressure is
enough to accomplish this.
5.
Make sure the connectors are properly supported. Relieve any side
pressure on the connection from long or heavy devices or cables.
6.
Torque the connection according to the procedures described in
Connection Using a Torque Wrench” on page 4-18
7 mm Devices
Fully extend the connector sleeve on one of the connectors and fully retract
the sleeve on the other. The extended sleeve creates a cylinder into which the
second connector
fi
ts.
If one of the connectors is
fi
xed (as on a test port), fully extend that connector
sleeve (spin its knurled connector nut to make sure the threads are fully
extended). Fully retract the connector sleeve on the other connector.
1.
Handle the devices at a static-safe work station, only. See
2.
Remove the 7 mm collet from the center conductor with the collet
extractor tool.1.Remove the 7 mm collet from the center conductor with
the collet extractor tool.
3.
Carefully align the connectors.
Do not turn the device body. Only turn the connector nut. Damage to the
center conductor can occur if the device body is twisted.