2
A
djustments
Introduction
This
chapter
describes
the
adjustments
required
to
ensure
the
4339B
is
within
its
published
specications
after
it
has
been
repaired,
or
when
it
fails
the
performance
tests
.
The
adjustments
should
be
performed
along
with
periodic
maintenance
to
keep
the
4339B
in
optimum
operating
condition.
If
proper
performance
cannot
be
achieved
after
adjustments
,
proceed
to
Chapter
4.
Note
T
o
ensure
proper
results
and
correct
instrument
operation,
a
60
minute
warm-up
(stabilization)
is
required
before
performing
the
adjustments
.
Safety
Consideration
This
chapter
contains
NO
TEs
,
CA
UTIONs
,
and
W
ARNINGs
which
must
be
followed
to
ensure
operator
safety
and
to
maintain
the
instrument
in
a
safe
and
serviceable
condition.
The
adjustments
covered
in
this
chapter
should
be
performed
only
by
a
qualied
person
who
is
aware
of
the
hazards
.
W
arning
Any
interruption
of
the
protective
ground
conductor
(inside
or
outside
the
instrument)
or
disconnection
of
the
protective
ground
terminal
can
make
the
instrument
dangerous
.
Intentional
interruption
of
the
protective
ground
system
for
any
reason
is
prohibited.
Required
Equipment
T
able
1-1
lists
the
equipment
required
to
perform
the
adjustments
.
Use
only
calibrated
equipment
when
adjusting
the
4339B .
Adjustments
2-1
