HP 5245L Service Manual

Section
III
Table 3-2
Model
5245L
Table
3-2.
In-Cabinet
Performance
Check
(cont'd)
F1
50
MHz
10
MHz
1
MHz
100
kHz
10 kHz
1
kHz
500 Hz
100
Hz
F2
100 Hz
100 Hz
100
Hz
100
Hz
100
Hz
100
Hz
100 Hz
100 Hz
Ratio FL/F2
500, oo0
100,
000
10,000
1,
000
100
10
5
1
2. F2 FREQUENCY
RANGE:
0
to
300
kHz.
Set
Counter
controls
as
follows:
SENSITTVITYto.IVOLT
SAMPLE
RATE to
slightly clockwise
out of POWER
OFF
TIME
BASE
to
EXT.
FUNCTION
to
10
PERIOD
AVERAGE.
-
LEVEL
+
to PRESET
Connect
Frequency
Synthesizer
set
for
1
MHz
at
0.
1V rms
to the Counter
TIME
BASE
EXT
connector.
Connect
Low
Frequency
Generator
to
Counter
DC SIGNAL
INPUT.
Vary
Low
Frequency
Generator
from
2,
5, and
10
Hz
at 0.
lV rms. Observe
Counter
display
for
ratio f
t/pZ.
Record
results
on
test
card.
Replace
Low
Frequency
Generator
with Synthesizer
and
set to frequencies
as
shown
(F2).
Use
1
MHz
from
OUTPUT
STD
FREQ
for
Fl.
Record
readings
on
test
card.
F2
2
5
10
100
1kc
100
kc
300
kc
Ratio Fl/Fz
500000
200000
100000
10000
1000
10
3.3
I
MULTIPLE
PERIOD:
1
to
105
in
decade
steps.
a.
Set
Counter
controls
as follows:
SENSITIVITYto.IVOLT
SAMPLE
RATE
to
slightly clockwise
out
of
pOWER
OFF
TIME
BASE
to
EXT
FUNCTION
to
1
PERIOD
AVERAGE
-
LEVEL
+
to
PRESET
c. Connect
Frequency
Synthesizer
set
to
1
MHz
at
0.
1V rms
to Counter
TIME
BASE
EXT
input.
d.
Connect
Oscillator
set to
100 kHz
at 0. 1V rms
to Counter
DC
SIGNAL INPUT
e. Counter
should
display
the
ratio
of. Fl/r2 *
1
count.
Record
results
on test
card.
TIffiE
BASE:
FREQUENCY
(INTERNAI):
I MHz
Stability:
Aging
Rate:
Less
than
3
p""tffiours.
As
a function
of
line voltage:
less
than
r5 parts
in
1010
for
changes
of
*L1Vo.
As
a function
of ambient
temperature:
less
than
+
2
parts
in
1010
per
"C
from
-20'C to
+bboC.
3-6
02349-1

HP 5245L Specifications

General

Brand	HP
Model	5245L
Category	Cash Counter
Language	English