Making Connections; How To Make A Connection - Agilent Technologies 85051B User's And Service Manual

Use, Maintenance, and Care of the Devices

Making Connections

Making Connections
Good connections require a skilled operator. The most common cause of measurement error is bad
connections. The following procedures illustrate how to make good connections.

How to Make a Connection

Preliminary Connection
1. Ground yourself and all devices. Wear a grounded wrist strap and work on a grounded, conductive table
mat. Refer to "Electrostatic Discharge" on page 3-2
2. Visually inspect the connectors. Refer to
3. If necessary, clean the connectors. Refer to
4. Use a connector gage to verify that all center conductors are within the pin depth specifications in
2-2 on page 2-4. Refer to
5. Fully extend the connector sleeve on one of the connectors. Spin its knurled connector nut to make sure
the threads are fully extended. Fully retract the sleeve on the other connector. The extended sleeve
creates a cylinder into which the other connector fits.
If one of the connectors is fixed (such as on a test port), fully extend that connector sleeve and fully
retract the sleeve on the moveable connector.
6. Carefully align the connectors. As you make the actual connection, be sure the connectors align
perfectly.
7. Push the connectors straight together. Do not twist or screw the connectors together.
8. Engage the connector nut (of the connector with the retracted sleeve) over the threads of the other
connector (the connector with the extended sleeve). Turn only the connector nut. Let the connector nut
pull the two connectors straight together.
9. 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.
10. Make sure the connectors are properly supported. Relieve any side pressure on the connection from long
or heavy devices or cables.
Final Connection Using a Torque Wrench
Use a torque wrench to make a final connection.
recommended for use with the calibration kit. A torque wrench is included in the calibration kit. Refer to
Table 6-1 on page 6-2 for part number and ordering information.
Table 3-1 Torque Wrench Information
Connector Type
7 mm
3-12
"Visual Inspection" on page
"Cleaning Connectors" on page
"Gaging Connectors" on page
Table 3-1
Torque Setting
136 N-cm (12 in-lb)
for ESD precautions.
3-3.
3-6.
provides information about the torque wrench
Torque Tolerance
13.6 N-cm (1.2 in-lb)
3-4.
Table
85051B