HP 85106D, Manual

Page: 35 / 244

1-16 HP 85106D mm-Wave System
Getting Started
Installing Test Set Modules
Installing Test Set Modules
CAUTION
The test set modules are extremely sensitive to electrostatic discharge
(ESD). Ground your work station before unpacking and installing test set
modules in your system. Refer to Table 5-1 on page 5-8 of this manual for
part numbers of ESD grounding supplies.
Installing the Test Port
Extensions
Each test set module is shipped with two or three straight extensions
(depending on the waveguide band), and one 90° bend. Attach these
extensions to the test set module port before performing the calibration and
performance verification procedure (refer to Figure 1-4 on page 1-17). The
straight extension flanges are precision flanges. The 90° extension has
standard flanges. Use a straight extension for the actual test port.
CAUTION
Do not use the 90° bend for the test port. Its flanges are not precision flanges.
To connect the precision flanges (the straight extensions), follow the
sequence below:
1. Install the captive screws into all four of the tapped holes in one of the
flanges.
2. Bring the flanges together using the guide pins for alignment.
3. Gradually tighten all four screws in an X-pattern to the final torque.
Connecting Standard
Flanges
The standard flanges are designed with the mating surfaces on a plane that is
different from the edges. The mating surfaces must be flush. To connect
standard flanges (the 90° bend), use the following procedure.
1. Install the captive screws in each of the four tapped holes in one of the
flanges.
2. Carefully bring the flanges together using the guide pins for alignment.
Hold the mating surfaces in contact while engaging the first few threads
of all four screws.
3. Gently tighten one top screw until there is light pressure on the mating
surface, then lightly tighten the opposite bottom screw to bring the
flange mating surfaces into even contact.