Keysight 11923A, Operating And Service Manual

Page: 35 / 39

Making Connections 4
Keysight 11923A Operating and Service Manual 35
Using the Torque Wrench
Using the torque wrench guarantees that a connection is not too tight. This will help prevent
possible connector damage. It also guarantees that all connections are equally tight each time.
Required wrenches
Table 4-1 provides information on the torque wrench required for making 1.0-mm connections and
for the threading the launch into the package wall.
Torque wrench procedure
– To thread the launch into the package wall, use a 7-mm torque wrench on the hex portion of
the launch and tighten the launch into the package wall with 56 N-cm (5 in-lb) of torque.
– To make 1.0-mm connections to the launch, use a 6-mm torque wrench to apply the
recommended torque to the 1.0-mm male nut while holding the hex portion of the launch with
a 7-mm open-end backup wrench.
– To make other 1.0-mm connections, use a 6-mm torque wrench and 6-mm backup wrench
(refer to “Connection Procedure” on page 34).
CAUTION
– Static friction must not be present during torquing.
– Do not pre-tighten so much that there is no rotation of the nut with the torque wrench.
Leave about 1/8 turn or 45 degrees of rotation for the final tightening with the torque
wrench.
– Rotate only the connector nut when you tighten the connector. Use an open-end wrench
to keep the body of the device from turning.
Table 4-1 Torque wrench information
Connector type Torque setting Torque tolerance Backup wrench
1.0 mm 45 N-cm (4 in-lb) ±5.4 N-cm (±0.5 in-lb) 6 mm/7mm
Launch installation 56 N-cm (5 in-lb) ±5.4 N-cm (±0.5 in-lb)