HP 437B Service Manual

ADJUSTMENTS
5-1. Introduction
5-2. Safety
Considerations
Warning Va
5-3. Equipment
Required
5-4. Factory Selected
Components
This
section
contains
adjustments
and
checks
that
ensure
proper
performance
of
the
Power
Meter.
Adjustments
are
not
required
on
any
fixed
periodic
basis,
and
normally
are
performed
only
after
a
performance
test
has
indicated
that
some
parameters
are
out
of
specification.
Performance
tests
should
be
completed
after
any
repairs
that
may
have altered
the
characteristics
of
the
instrument.
The
test
results
will
make
it
possible
to
determine
whether
or
not
adjustments
are
required.
Allow
30
minutes
for
the
Power
Meter
to
warm
up,
and
then
remove
the
top
and
bottom
covers,
for
access
to
the
test
and
adjustment
points.
To determine which performance tests and adjustments to perform after a
repair, refer to paragraph 5-5, Post-Repair Adjustments.
This
section
contains
a
warning
that
must
be
followed
for
your
protection
and
to
avoid
damage
to
the
equipment
being
used.
Adjustments described in this section are performed with power applied to the
instrument and with protective covers removed. Maintenance should be
performed only by trained personnel who are aware of the hazards involved.
When the maintenance procedure can be performed without power, the power
should be removed.
Most of the adjustment procedures include a list of recommended test
equipment. The test equipment is also identified on the test setup diagrams.
If substitutions must be made, the equipment used must meet the critical
specification listed in Table 1-3 in Section I.
Factory selected components are identified on the schematics and parts lists
by an asterisk(*) which follows the reference designator. The nominal value
of the selected component is shown. Table 5-1 lists the reference designator,
the service sheet where the component is shown, the value range, and the
basis for selecting a particular value.
ADJUSTMENTS 5-1

HP 437B Specifications

General

Brand	HP
Model	437B
Category	Measuring Instruments
Language	English