Keysight Technologies 85053B, User'S And Service Manual

Page: 33 / 58

85053B 3-17
Use, Maintenance, and Care of the Devices
Connections
Final Connection Using a Torque Wrench
Use a torque wrench to make a final connection. Table 3-1 provides
information about the torque wrench recommended for use with the calibration
kit. A torque wrench is not included in the calibration kit. Refer to Table 6-3 on
page 5 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.
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). However, it is recommended that you use an open-end
wrench to keep the body of the device from turning.
1. Position both wrenches within 90 degrees of each other before applying
force. See Figure 3-6 . 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.
Figure 3-6 Wrench Positions
2. Hold the torque wrench lightly, at the end of the handle only (beyond the
groove). See Figure 3-7 .
Table 3-1 Torque Wrench Information
Connector Type Torque Setting Torque Tolerance
3.5 mm 90 N-cm (8 in-lb) ± 9.0 N-cm ( ± 0.8 in-lb)