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Section
III
Table 3-2
Table
3-2.
In-Cabinet Performance Check
(cont'd)
2.
TIME BASE-Output-FRONT
PANEL:
0.
1
Hz
to
1 MHz
in
decade
stepsl
1V
peak-to-peak.
(See
specifications Table
1-1.
)
a.
Set
Counter
controls
as
follows:
SAMPLE
RATE slightly clockwise out of
POWER
OFF
TIME
BASE
to
1
prs
FUNCTION
to
FREQUENCY
b.
Connect
Oscilloscope
to EXT input
jack.
c.
Oscilloscope should display
1
MHz
rectangular wave of 1V peak-to-peak. Record
on
test
card
the frequency
and
amplitude of the TIME
BASE output.
d.
Set
the TIME BASE switch to
each
position,
10
ps through
10s.
The displayed
frequency
should
decrease
by
a
factor of
10
for
each
successive
setting of the TIME
BASE.
The
amplitude
should
be
lV
peak-to-peak
for all settings.
Record
on
test card
frequency
and
amplitude
of TIME
BASE
output
for
each
successive setting.
3.
TIME BASE-Output-REAR PANEL:
0. 1
Hz
to
10
MHz
in
decade
steps
5V
peak-to-peak rectangular
wave
with
1000-Q
source at
1
MHz
and
lower;
1V
rms
sine
wave
with
1000-Q
source impedance only at
10
MHz.
(see
specifications
Table 1-1.)
a.
Set
Counter
controls
as
follows:
SAMPLE
RATE slightly cloclsvise out of
POWER
OFF
MODE
(rear
panel)
to
INT
STD FREQ
OUTPUT
(rear
panel)
to
10
MHz
10
b.
Connect
Oscilloscope
to the OUTPUT connector
(,15)
on
the rear
panel.
c.
Oscilloscope should display
10
MHz
at
1V
rms.
Record the frequency
and
amplitude
on
test
card.
d.
Set
the OUTPUT switch to
each
position,
1
MHz
102
through
.
1
Hz
109.
The displayed frequency
should decrease
by
a
factor of
10
for
each
successive
setting of the OUTPUT switch.
INPUT ATTENUATION
1.
Range: Three ranges
0.1,
1.0,
and
10
volts.
a.
Set
Counter
controls
as
follows:
SENSITIVIIYto.IVOLT
SAMPLE
RATE slightty clockwise out of
POWER
OFF
TIME
BASE
to
. 1s
FUNCTION
to
FREQUENCY
-
LEVEL
+
to
PRESET
b.
Connect
Oscillator to
Counter DC SIGNAL
INPUT.
Set
Oscillator
for
100
kHz
at
100
mV
(.
1V)
rms.
Counter should count
and
display
100
kHz.
c.
Change
Counter
SENSITryITY
to
1.
0
volt.
Increase Oscillator output
to
100
kHz
at
1V
rms.
The Counter should count
and
display
100
kHz.
Record
results
on
test
card.
d.
Change
Counter SENSITIVITY
to
10
volts.
Increase Osciltator output
to
100
kHz
at
10V
rms.
The Counter should count
and
display
100
kHz.
Record
results
on
test
card.
DISPTAY STORAGE
a.
Set
Counter
controls as follows:
SENSITIVIIY to
CHECK
SAMPLE
RATE slightly clockwise out of
POWER
OFF
TIME
BASE
to .1s
FUNCTION
to
FREQUENCY
STORAGE
(rear
panel)
to OFF
-
LEVEL + to
PRESET
Model 5245L
3-8
02349-1
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