HP 5245L Service Manual

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

HP 5245L Specifications

General

Brand	HP
Model	5245L
Category	Cash Counter
Language	English