HP 5254C - ACCURACY VERIFICATION

Section
V
Model
5254C
Table
5-4. In- Cabinet
Performance
Check
(cont'd)
3.
ACCURACY: same as
basic
Counter,
a.
Set
Counter
controls
as follows:
SAMPLE
RATE
. . .
.slightly
clockwise out
of
POWER
OFF
SENSITIVITY
IV
TIME
BASE
IS
FUNCTION
FREQUENCY
b.
Connect
HP
5105A/5110B Frequency
Synthesizer
OUTPUT
to
Counter
AC
SIGNAL
INPUT.
Load
the
Synthesizer
with a
50-ohm
feedthrough at
Counter
INPUT.
c.
Use
HP 106A/B
Frequency
Standard
5
MHz
output
for
Synthesizer
time base.
Use
the
Frequency
Standard 1
MHz output for the
Counter time base.
d.
Set
Synthesizer
output
frequency to
010, 000,
000. 0
Hz, at a level
of 0
dBm
(0.224
volts
rms). Note
Counter
reading.
e.
Disconnect Synthesizer
from
Counter
INPUT.
f.
Change
Counter
SENSITIVITY
to
PLUG-IN.
Place
5254C into plug-in
compartment
of
HP
5245L.
g.
Connect
Synthesizer
OUTPUT
to
5254C INPUT.
h. Set
Synthesizer
output
frequency to
210
MHz
at a
level
of 0
dBm (0.224
volts rms).
i.
Tune
5254C upscale
from
.
2
GHz
until
first
meter
indication
is obtained.
Note
Counter
reading
and record.
Reading must be
identical
with
that obtained in
step d
(±
2
Hz).
j.
Connect setup as
shown in
Figure
5-3.
Set Counter
controls as
follows:
SAMPLE
RATE
. . .
slightly
clockwise
out of
POWER
OFF
SENSITIVITY
PLUG-IN
TIME
BASE
IS
FUNCTION
FREQUENCY
Figure
5-3
k.
Set
HP 2654A Frequency
Standard
Synchronizer as
follows:
IF REF
(INT)
Depress
button
MODULATION
SENSITIVITY
0.
25
-
0.
5
MHz/V
APC
ON
1. Set
HP 8616A
Signal
Generator as
follows:
FREQUENCY
Tune
for
lock at
2. 970
GHz
ATTENUATION
-13
dB
(50
millivolts
into 50 ohms)
INTERNAL
(ALC)
Depress
button
EXTERNAL
(FM)
Depress button
ALC CAL
OUTPUT
Zero set
m.
Set
5254
C
dial for
maximum
meter
indication at
2. 950
GHz. Counter
should
indicate
20,
000. 000
kHz (+2
Hz).
5-8