Anritsu 37 D Series, Maintenance Manual, Page: 138 / 190

8-13
TEST SET MODULE
ASSEMBLIES
Replacement of any item on the Test Set Module will require that all
Source Calibrations and the Source Lock Threshold Calibration be
performed (see Chapter 6). Performing all of the tests in the 3700Test
program (Section 4-4) is also strongly suggested.
Equipment Required:
q
Connector torque wrench (
5
16
inch), Anritsu Model 01-201, or
equivalent
q
1 inch open-end wrench and
3
32
inch ball end hex wrench (only if
couplers are to be replaced)
CAUTION
Throughout these procedures, always use the 5
16
inch connec-
tor torque wrench for connecting the Test Set Module
semi-rigid coaxial lines and RF/microwave components. Use
of improper tools may damage the connectors, resulting in
degraded instrument performance.
Preliminary:
q
Switch the VNA power to off and remove the power cord.
q
Remove all covers (Section 8-3).
Remove/Replace Procedure:
All RF components found on the Test Set Module may be removed and
replaced simply by removal of the associated RF cabling, Phillips-head
screws, and unplugging bias cables. Replacement parts supplied by
Anritsu have instructions where instructions are necessary.
Take careful note of all warnings and notes printed on the first page of
this Chapter. RF connectors are easily damaged. RF cable connections
that are improperly mated will cause discontinuities resulting in mea-
surement errors.
Figures 8-8 and 8-9 show the locations of all RF components located on
the Test Set assembly.
TEST SET MODULE ASSEMBLIES REMOVE AND REPLACE
8-18 37XXXD MM