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82RF
MAINTENANCE
Calibration
Adjustment
The
following
procedure
assumes
the
use
of
the
equipment
(or equivalent)
listed in
Table
1.
Make
sure
that the
DMM
has
an
input
impedance
of
10
Mfl
±10%
shunted by
less
than 200 pF.
1.
Complete
the
test
set-up
shown
in
Figure
3.
2.
Set the
DMM
to
read
2.00V
dc.
NOTE
Accurate
results
cannot be obtained
unless
the signal
is
terminated with 50£l near
the
measurement
point.
3.
Program
the signal
generator
for
an
output
of
10
MHz
at
a
level
of
1.00V rms,
TERM.
(500
instrument).
4.
Check
the
DMM
reading,
it
should
be
between
±0.95
and
1.05V
dc.
If
the
reading
is
within
limits,
calibration
adjustment
is
not
required.
Complete
the
remaining
steps
if
adjustment
is
necessary.
5.
The
calibration
adjustment
is
located
in
the
DMM
connector portion
of the
82RF.
Refer
to
Figure 4
and
access the
adjustment
using the
appropriate procedure.
6.
Using
a
plastic
adjusting
tool,
adjust
the
calibration
pot
for
a
DMM
reading of
1.00V.
7.
Reassemble
the
probe
and
verify
that the
DMM
reading
is
still
within
limits.
Cleaning
Use
a
soft
cloth
dampened
in
a mild solution of detergent
and
water
to
clean the
82RF.
Do
not use
solvents.
Table
1.
List
of
Recommended
Test
Equipment
3
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