Keysight Technologies 85038A 7-16, Руководство пользователя и сервисное руководство

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3-6 85038A/F/M
Use, Maintenance, and Care of the Devices
Connections
resistance.
6. 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.
7. 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
1. Use a torque wrench to make a final connection. Table 3-1 provides information about the torque
wrench recommended for use with these calibration kits. A torque wrench is included in the 85038A
calibration kit but not in the 85038F/M calibration kits. Refer to Chapter 6 for part number and ordering
information.
Using a torque wrench guarantees that the connection is not too tight, preventing possible connector
damage. It also guarantees that all connections are equally tight each time.
2. Prevent the rotation of anything other than the connector nut that you are tightening. It may be possible
to do this by hand if one of the connectors is fixed (as on a test port). In all situations, however, it is
recommended that you use an open-end wrench to keep the body of the device from turning. Refer to
Chapter 6 for part number and ordering information.
3. Position both wrenches within 90 degrees of each other before applying force. See Figure 3-2 .
Wrenches opposing each other (greater than 90 degrees apart) will cause a lifting action which can
misalign and stress the connections of the devices involved. This is especially true when several
devices are connected together.
Table 3-1 Torque Wrench Information
Connector Type Torque Setting Torque Tolerance
7-16 226 N-cm (20 in-lb)  22.6 N-cm (  2.0 in-lb)