Agilent Technologies 11982A, Руководство по эксплуатации и обслуживанию

Страница: 58 / 70

4-13
Verification and Service Information
Service Information
C A U T I O N This instrument contains static-sensitive components. Read “Electrostatic
Discharge Information” on page 1-19 before removing any assemblies.
Replacing the RF
Cable or the RF
Connector When replacing the RF cable or RF output connectors, use the appropriate
torque value. See
Table 4-3 .
C A U T I O N Avoid bending or distorting any semirigid cables when removing or reinstalling
assemblies. Before removing an assembly, always loosen both ends of any
semirigid cable attached to the assembly. When reinstalling cables, tighten to
specified torque only. If a torque-measuring tool is not available, make
semirigid cable connections finger-tight only. Do not overtighten!
Replacing the ac
Cable Assembly The ac cable assembly consists of the line module, the line switch, and the
cable harness. When replacing the ac cable assembly, unsolder the connec-
tions to the dc power supply. Remove the line module. Remove the line switch.
See
Figure 4-2 on page 4-14 and Table 4-4 on page 4-14 when installing a new
ac cable assembly.
Note
Replacing the RF cable or the RF connector may cause the Agilent 11982A to no longer
meet the specifications and characteristics shown in
Table 1-1 on page 1-6 . The RF cable
and RF connector must be replaced carefully to minimize the risk of the Agilent 11982A
failing specifications. To be sure that it does meet specifications, you should return the
Agilent 11982A to Agilent Technologies for recalibration.
Table 4-3. Torque Values
Description Tool Size Torque
Nut RF OUTPUT SMA
connectors 1/2 inch 25 inch-pounds
SMA cable connections 5/16 inch 10 inch-pounds