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4708
AC
(mV
RANGES)
600mm
Type
Uniradio
M70
(75
Ohm-67pF/m)
Fig,
2
Verification
of
4708
e
•
Reconnect
the
test
circuit for Verification.
Set
the
4708
OUTPUT
RANGE
to
ImV
and
adjust the
OUTPUT
Display
to
1.
0000m
V.
f.
Set
4708
OUTPUT
ON.
Adjust
OUTPUT
keys
for
a
DMM
reading of
VI.
g
.
Record
the
4708
OUTPUT
Display
setting in
the
last
column
of
RS2.
h
.
Repeat
(a) to (g),
but
setting
the
4708
frequency
to
lOOkHz.
j
.
Set
the
WIVD
ratio
and
DMM
as
required
to verify the
lOmV
and
lOOmV
Full
Range
outputs;
still
using the
corrected
IV
Full
Range
output
in
(b).
Record
the
results
on RS2.
k
.
Sum
the Verification
setup
uncertainties
and
record
in
the
Us
column
as voltage
deviations.
(Refer
to
Appendix
2).
Total Tolerance
Limit
Calculations
Refer
to
Appendix
1
page
7-Al-l, para
1.
l
.
Calculate
the
Lower
and
Upper
Total
Tolerance
Limits:
Use
Calculation
A
if
the
4708 was
last
calibrated
by
Datron.
Use
Calculation
B
if
the
4708 was
last
calibrated
against the standards
being used
for
verification.
m
.
Each 4708
mV
Full
Range
verifies
if
the
4708
OUTPUT
Display readings recorded
in (g)
are
at
or
between
the
corresponding
Validity
Tolerance
Limits.
7-A4-3
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