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Section
IV
Model
339A
a.
Set the
339A
controls as
follows:
FUNCTION
INPUT LEVEL
FILTERS
OFF
(out)
METER
RESPONSE
VU
INPUT
RANGE
IV
INPUT/GND SELECT
....
DIS.
AN./J_
(center position)
b.
Set the
AC
Calibrator controls
for
an output
of
1
V
1
kHz.
b.
Connect
the
equipment
as
shown
in
Figure
4-3.
c.
Adjust
the pulse
generator
for a 10
V
peak-to-peak
positive pulse
with a
repetition rate of
1
kHz
(as
observed
on
the oscilloscope).
d.
Adjust
the Pulse
Geneator
symmetry
until
the true
RMS
voltmeter
indicates 3.00
V
rms.
NOTE
c.
Set the
True
RMS
Voltmeter
to
read
AC
Volts
on
the
1
V
range.
d.
Connect
the
equipment
as
shown
in
Figure
4-2.
The
pulse generator
amplitude
and symmetry
controls
may
interact.
Repeat adjustments
as
necessary
to
obtain
a
true
rms
meter
indication
of
3
V
and
an
oscilloscope
presentation
of
10
V
peak-to-peak.
10.
The
339A
1
V
meter
indication
and
MONITOR
output
level
should
be within the Test Limits
listed in
Table
4-2.
e.
The 339A
meter
indication
must
be
3
volts
±
.06
volts.
f.
Using
the
AC
Calibrator,
verify
the
339A
meter
accuracy
and
MONITOR
output accuracy
for
each
input
level listed in
Table
4-2.
f.
Change
the
Pulse
Generator
repetition
rate to
100
Hz.
Readjust
the
amplitude and
symmetry
as
necessary
to
obtain
a true
RMS
meter
indication of
3
V
and
a 10
V
peak-to-peak
oscilloscope presentation.
Table
4-2.
Meter Tracking
and
MONITOR
Output
Accuracy
Tests.
Input
Level
Meter
Indication
Monitor
Output
Level
1.0
V
.98
-
1
02
.95
-
1.05
.9
V
88
-
.92
85
-
.95
8
V
78
-
.82
.75
-
85
.7
V
.68
-
.72
65
-
.75
.6
V
.58
-
.62
.55
-
.65
.5
V
.48
-
.52
.45
-
.55
k
4
V
.38
-
.42
.35
-
.45
'
.3
V
.28
-
.32
.25
-
.35
.2
V
.18-22
.15
-
.25
.1
V
.08
-
.12
.05
-
.15
4-13.
RMS
Accuracy
(crest factor) Test.
Equipment
Required:
Pulse
Generator
(-hp-
Model
8011
A)
True
RMS
Voltmeter
(-hp-
Model
3403C)
Oscilloscope
(-hp-
Model
1221
A)
a.
Set the
339A
controls
as follows:
FUNCTION
INPUT LEVEL
FILTERS
OFF
(out)
METER RESPONSE
VU
INPUT
RANGE
3
V
INPUT/GND SELECT
|
(center position)
DIS.
AN./±
g.
The 339A
meter
indication
must
be
3
V ±
.06
volts.
h.
Change
the Pulse
Generator
repetition rate
to 10
kHz.
Readjust
the
amplitude
and symmetry
as
necessary
to
obtain
a
True
RMS
meter reading
of
3
V
and
a 10
V
peak-to-peak
oscilloscope presentation.
i.
The 339A
meter
indication
must
be
3
V ±
.
12
volts.
4-14.
Filter
Accuracy
Test.
Equipment
Required:
Spectrum
Analyzer
(-hp-
Model
3044A)
a.
Set the
339A
controls as follows:
FUNCTION
INPUT LEVEL
FILTERS
OFF
(out)
METER
RESPONSE
VU
INPUT
RANGE
IV
INPUT/GND SELECT
....
DIS.
AN./J_
(center position)
b.
Connect
the
equipment
as
shown
in
Figure
4-4.
c.
Set
theSynthesizer (3330B) output frequency
to
400
Hz
and
adjust the
output
level
for a
full-scale
meter
reading
on
the
339A.
d.
Set the
Spectrum
Analyzer
(3571
A)
controls
for
an
input
impedance
of
1
Mf2
,
an
input
range
of
+
lOdB
V, a
bandwidth
of
3
Hz
and
a
relative
display
reference.
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