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Model 5245L
Section
III
Paragraphs 3-1 to 3-2
SECTION
III
PERFORiIANCE
CHECK
3-1.
GENERAL. The
In-Cabinet
P
e
rf
o
r manc
e
Checks, Table
3-2,
and Performance
Check Test
Card (to
be
filled
out during incoming
inspection),
pages
3-11athru3-11d,
verify
specifications
and
pro-
vide
permanent
record of the
performance
of
each
instrument.
The In-Cabinet Performance
C
he
ck,
Table 3-2,
and
the Self-Check Procedure, Figure 6-1,
verify proper
operation
of
all
circuits
in the
Model
5245L
Electronic
Counter
and
may be
used:
a.
as
part of
an incoming inspection
check
of in-
strument
specif
ications;
b.
periodically,
for
instruments used in
systems
where maximum
reliability is
of utmost importance;
c.
as
part of
a
troubleshooting procedure to locate
malfunctioning
circuits,
and
d.
after
any
repairs or
adjustments,
before return-
ing instrument to regular service.
3-2.
VARIABLE LINE
VOLTAGE.
During the Per-
formance Check, Table
3-2,
the Model 5245L
should
be
connected
to power sourcethrough
a
variablevolt-
age device so
that line
voltage may be varied
x
LIVo
from
nominal
(tt5
or
230
Vac) to assure proper op-
eration
of
the
Counter
under
various
supply
conditions.
Table
3-1.
Recommended
Test Equipment
Instrument
Type
Required
Characteristics
Use
hstrument
Recommended
Oscilloscope
50
MHz
bandwidth,
dual
trace
plug-in,
ext
sync
capability.
Observe
waveforms during
troubleshooting
and
adjust-
ment.
PerformanceCheck.
HP
Model
1?5A
Oscilloscope
HP Model
1?50A
Dual
Trace Vertical
Amplifier
HP AC-21C Voltage
Divider Probe
(two)
HP
10003A
10:1 Probe
Test Oscillator
Continuously
variable from
10
Hz
to
50
MHz,
100 mV
output.
Performance
Check
HP Modet 2048
Oscillator
HP Model
6064'
Test
Oscillator
Low Frequency
Generator
Continuously
variable from
2
Hz
to
10
Hz,
100 mV
output.
Performance
Check
HP Model
2024.
Low
Frequency Function
Generator
Pulse Generator
1
psec
wide, 1V
negative,
1
kHz repetition rate.
Performance
Check
HP Model 2l2A Pulse
Generator
Primary
Standard
Oscillator
100
kHz
or
1
MHz
sine
wave,
accuracy
of
(
t
5
x
10-10
per
24
hours.
Check
accuracy of Counter
time
base
Performance
Check
HP
Model
10?BR
Variable line volt-
age
source
with
meter
Variable
from
103
to
12?
Yac
(201
to
253
Vac).
Performance
Check
DC
Voltmeter
0V
to
+
1?0V,
10 megohm
input impedance,
t%o
accuracy.
Troubleshooting
and
adjustments
HP Model
412.4.
Power Amplifier
DC
to
10
MHz,
10
dB
gain.
Performance
Check
Dymec
DY-2460A/
DY-2460A-M2
Power
Supply
0V
to +20V
Performance
Check
HP Model 72LA
02349-
1
3-1
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