Section V Adjustments; Introduction; Safety Considerations; Equipment Required - HP 8340B Manual

INTRODUCTION

This section provides adjustment procedures for the HP 8340B/41B Synthesized Sweepers. These
procedures should not be performed as routine maintenance but should be used (1) after replacement
of a part or component, or (2) when performance tests show that the instrument's specifications
cannot be met. Before attempting any adjustment, allow 1 hour warm-up time for
adjustment procedures by test number in the order they appear in this Section. Table 5-2
S-i lists the
lists all factory selected
assemblies. This table lists the adjustment paragraphs that must be checked when an assembly is
adjusted, parts replaced, or the assembly replaced.

SAFETY CONSIDERATIONS

Although this instrument has been designed in accordance with international safety standards, this
manual contains information, cautions, and warnings
tion and to retain the instrument in safe condition. Service and adjustments should be performed only
by qualified service personnel.
Adjustments in this section are performed with power supplied to the instrument while
protective covers are removed. There are voltages at many points in the instrument
which can, if contacted, cause personal injury or death. Be extremely careful. Adust-
ments should be performed only by trained service personnel.
Power is still applied to this instrument with the LINE switch set to STANDBY. There is no
OFF position on the LINE switch. Before removing or installing any assembly or printed
circuit board, remove the power cord from the rear of the instrument.
Capacitors inside the instrument may still be charged, even if the instrument has been
disconnected from its source of ac power. Use a non-metallic adjustment tool whenever
possible.

EQUIPMENT REQUIRED

lists the equipment required for the adjustment procedures. If the test equipment recom-
Table 4-1
mended is not available, other equipment may be used if its performance meets the "Critical Specifi-
cations" listed in the table. The test setup used for an
procedure.
HP 8340B/41B
components. 5-3 lists adjustment procedures that interact between
Table
~NG
Section V. Adjustments
which must be followed to ensure safe opera-
procedure is referenced in each
adjustment
the instrument. Table
Adjustments 5-1