Agilent Technologies 8935 Series, Руководство пользователя

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112 Chapter 5
Disassembly
A2 Disassembly
A2 Disassembly
This section describes how to disassemble the A2 assembly. Use Table
5-1 below to see which assemblies are replaceable.
NOTE
Periodic Adjustment Intervals
The adjustment programs Periodic Calibration, IQ Calibration, and
Eb/No Calibration should be performed after any assembly referred to
in
Table 7-1 on page 159 is replaced, or at least every 24 months. These
program can be run anytime to optimize the performance of the Test
Set. See
Chapter 7 , “Periodic Adjustments,” on page 157 for details.
NOTE
Performance Test Intervals
The performance tests in Chapter 8 , “Performance Tests,” on page 173
should be performed when certain assemblies are repaired or replaced,
or at least every 24 months. See
Table 3-2 on page 75 for those
assemblies requiring performance testing/calibration.
Module and PC Board Assemblies
1. Remove the Test Set’s external and top internal covers, see
“Removing the External and Internal Covers” on page 104 .
2. Remove modules using a flat-blade screwdriver to pry them upward
from the chassis, see Figure 5-8 on page 113 .
3. Remove PC board assemblies by lifting them from the chassis (some
assemblies have pull rings) and then disconnect any cables that may
be attached to it. See
Figure 5-9 on page 114 for cable connections.
Table 5-1 A2 Assemblies
Module and PC Board Assemblies see page 112
Control Interface Assembly see page 117
PCMCIA Assembly see page 116
RF Input/Output, Upconverter, & Downconverter
Assemblies see page 118
LO IF/IQ Modulator and CDMA Generator Reference (Gen
Ref) Assemblies see page 120
see page 122
see page 124