Keysight 11923A, Operating And Service Manual

Page: 23 / 39

Mounting the Launch 3
Keysight 11923A Operating and Service Manual 23
Threading the launch into the package or fixture
If you need a quasi-hermetic seal or you want to permanently retain the launch assembly in the
package or fixture, epoxy may be applied to the threads of the launch prior to installation. Use heat
to cure the epoxy, if necessary.
1 Hand thread the launch all the way into the package or fixture wall and then reverse thread 1/8
turn or 45 degrees of rotation to allow for final tightening with a torque wrench.
2 Use a 7-mm torque wrench
[1]
on the hex portion of the launch body to thread it into the
package wall. Tighten the launch into the package with 56 N-cm (5 in-lb) of torque. Refer to
“Using the Torque Wrench” on page 35 for the recommended procedure.
This is enough to create a slight deformation where the launch contacts the package floor to
assure a good ground connection.
Figure 3-2 Threading the launch into the package or fixture
CAUTION
Do not overheat . The dielectric material in the support bead is capable of withstanding 125 °C for
prolonged periods and 150 °C for short periods.
[1] This torque wrench is not available from Keysight Technologies.