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Section
IV
Model
3455A
Table
4-6.
AC
Accuracy
Test
30 Hz
te
100 kHz (34SSA
Option
001
onlyl.
Frequency
(ACV)
Frequency
(FAST ACV)
Input
Level
345SA
Range
24 Hour'
Test Limits
90 Day'
Tast Limits
30
300
Hz
1
V
1
V
0 99460
to
1.00540
0.99430
to
1
00570
60 Hz
500
Hz
1
V
1
V
0.99630
to
1.00370
0 99600
to
1.00400
250 kHz
250 kHz
1
V
1
V
0 99240
to
1.00760
0.99190
to
1.00810
30
Hz
300 Hz
5V
10
V
4.969510
5.0305
4.9680
to
5.0320
100
kHz
100 kHz
5V
10
V
4.9930
to
5
0070
4
9925
to
5.0075
250 kHz
250 kHz
5V
10
V
4
9590
to
5.0410
4.9565
to
5.0436
30 Hz
300 Hz
10
V
10
V
9
9460
to
10.0540
9.9430
to
10.0570
100 Hz
1
kHz
10
V
10
V
9 9886
to
10.0115
9.9875
to
10.0125
100 kHz
100
kHz
10
V
10
V
99885
to
10.0115
9.987S
to
10.0125
30
Hz
300 Hz
100
V
100
V
99 460
to
100.540
99.430
to
100.570
100
kHz
100 kHz
100
V
100
V
99 885
to
100.115
99.87510
100.126
30 Hz
300 Hz
1000
V
lOOOV
994.60
to
1005.40
994.30
to
1005.70
10
kHz
10
kHz
1000
V
1000
V
998.75
to
1001.25
998 65
to
1001
.35
'These
(est limits
do
not
include
the lemperaiuri
coefficients that
must be added
if
the
instru-
ment
is
operated
outside of the
temperature range
over
which
the
24 hour
or
90-day
specifi-
cations
apply
(see
Table
1-11.
Derive
6-month
test limits
from
AC
Accuracy
specifications
listed
in
Table
T1
the
meter of
the Test Oscillator
and
use control
to
main-
tain
this
reading
whenever
the
frequency
is
varied.
s.
Repeat
step q.
t.
Set the
3455A
FUNCTION
to
ACV
and
RANGE
to 10
V.
Remove
the
50-ohm
termination
from
the Test
Oscillator's
output.
Connect
the
50-ohm
output of
the
Test Oscillator
(unterminated)
to
the
3455A
front
panel
INPUT.
Set the
Test
Oscillator
frequency
to 10
kHz
and
adjust
its
level
controls
for
the
5 volt
3455A
reading
recorded
in
step
1.
Adjust
the
meter
reference controls
for a zero
reading
on
the
meter of
the Test Oscillator
and
use the
level
controls to
maintain
this
reading
whenever
the
frequency
is
varied.
u.
I.
Standard
Model
3455A:
Set
the Test Oscillator
to
each of
the
last
two
Test
Frequencies
listed in
Table
4-5
(maintain
reference
level
on meter of
Test
Oscillator).
At
each frequency
setting,
(he
3455A
reading
should be
within the Test Limits
given
in
the
table.
2.
345SA
Option
001.
Set the
Test Oscillator
fre-
quency
to
250
kHz
(maintain reference
level
on
meter of
Test
Oscillator).
The 3455A
display
reading should be
between 4.9590
V
and
5.0410
V
(24-hour
spec.)
or
between 4.9565
V
and
5.0435
V
(90-day
spec.).
v.
Set the
3455A
FUNCTION
to
FAST ACV.
Set the
Test Oscillator
frequency
to 10
kHz
and
adjust
its
level
controls for the
5
V
3455A
reading recorded
in
step
m.
Adjust
the
meter
reference controls for
a
zero reading
on
the
meter of
the Test Oscillator
and
use
the
level
con-
trols
to
maintain
this
reading
whenever
the
frequency
is
varied.
w.
Repeat
step
u.
Table
4-7.
Two-Wira
Ohm
Accuracy TasL
Test
Limets
(High Ree.
Onl
Decade
Resaloi
34S5A
Range
24
Hour*
90 Day
'
100
99.9971
to
100.0029
99 9995
to
100.0045
•These
test limits
do
not
include the
temperature
coefficients
that
must be added
if
the instrument
it
operated
outside of the
temperature
rar>ge
over
v^ich
the
24-hour or 90-day
speciflca-
tiorts
apply
(see
Table
1-1).
Derive
6-month
test limits
from
Ohms
Accuracy
specifications
listed
In
Table
1-1
.
X.
This completes
the
AC
Voltmeter
Accuracy
Test.
Disconnect
the Test Oscillator
from
the
3455A.
4-35.
Ohmmatar
Accuracy
Tast
4-36.
This
test
requires a
ca/ibraret/
decade
resistor
with
settings that
range
from
100
ohms
to
10
megohms. The
correction factors indicated
on
the
decade
resistor's
calibration chart
must
be
algebraically
added
to the
345SA
display readings to achieve the required
test
ac-
curacy.
4-37.
Tast Pracadura.
Equipment
Required;
Decade
Resistor (calibrated
General Radio
Model
I433Z)
a.
Set
the
3455A
controls
as follows:
FUNCTION
2
WIRE
K
OHM
RANGE
100
HIGH RESOLUTION
ON
GUARD
ON
4-8
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