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Section
IV
Model
34S5A
TEST
OSCILLATOR
DIGITAL
VOLTMETER
PROCEDURE:
Appiv
accurate
dc
voltage
II
V
or
3 V)
from
OC
Standard
to
Thermal
Converter
and
adjust
DC
Differential
Voltmeter
for
null.
Disconnect the
DC
Standard
and
apply
the Test Oscillator
output
to
both
the
Thermal
Converter
and
the
3455A.
Ad)ust
the Test
Oscillator
output
level
for
a
null
indication
on
the
OC
Differential
Volirrteter.
This
makes
the
rms
value of the ac input
to
the
3455A
equal
to the highly
accurate
output
of the
DC
Standard.
Repeat
this
procedure each time the
Test Oscillator
frequency
is
changed.
Fioura
4-5.
AC/OC
Thaniial
Trtmftr
MuturtMitt
(Altarnat* Frgqueficy
ResponM
Tmi).
a.
Set the
34SSA
controls
as follows;
FUNCTION
ACV
RANGE
I
V
GUARD
ON
INPUT SELECT
FRONT
b.
Set the
AC
Calibrator
for
an output of
1
V, 30
Hz
(74SA
1
V
range).
Set
the
AC
Calibrator's error
measurement
control to
offset
the
1
V, 30
Hz
error
in-
dicated
on
the calibration chart
(745A
0.1
error range).
c.
Connect
the
output
of
the
AC
Calibrator to the
3455A
front
panel
INPUT.
d.
1.
Standard
Model
3455A:
The3455A
1
V,30Hz
reading should
be
within the Test Limits
listed
in
Table
4-13.
2.
3455A
Option
001:
The 3455A
1
V. 30
Hz
(ACV)
reading should
be
within the Test Limits
listed in
Table
4-IS.
e.
1.
Standard
Model
34SSA: Using
the
AC
Calibrator, verify the
34SSA
ac voltmeter
ac-
curacy
for
each
Test
Frequency, Input
Level
and 3455A Range
listed in
Table
^13.
The
345SA
display readings
should be
within the
Test Limits given
in
the
table.
2.
3455A
Option
001:
Using
the
AC
Calibrator,
verify
the
345SA
ac voltmeter accuracy
for
each
Test
Frequency
(ACV),
Input Level
and
3455A
Range
listed in
Table
4-15.
The 345SA
display
readings
should be
within the Test Limits given
in
the
table.
f.
Set the
3455A
FUNCTION
to
FAST
ACV.
g.
1.
Standard
Model
3455A: Using
the
AC
Calibrator,
verify
the
3455A
ac voltmeter
ac-
curacy
(Fast
ACV)
for
each
Test
Frequency
above
100
Hz,
each Input
Level
and
34S5A
Range
listed in
Table
4-13.
The 345SA
display
readings
should be
within the Test Limits given
4-13
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