HP 8642A - Page 268

Performance Tests
Model 8642A/B
PERFORMANCE TESTS
4-9. AM, FM and PM TESTS
SPECIFIC A TION:
Electrical Characteristics Performance Limits
Conditions
AMPLITUDE MODULATION
Depth
o to 99.9%
Level :5+10
Resolution
0.1%
Incidental PM
0.20 radians peak
1 kHz Rate 30% AM
Indicator Accuracy ±(3.5%
of reading +1% AM)
8642A Bands 1-8, HET;
(1 kHz rate, up to 90% AM)
8642B Bands 1-9, HET
:t(5%
of setting +1% AM)
8642A Band
9,
8642B Band 10
AM Distortion at 1 kHz rate 8642A
Bands 1-8
Band
9, HET
<1% <2%
o to 30% AM
<2%
<4% 30 to 70% AM
<4% <6%
70 to 90% AM
8642B
Bands 1-9 Band
10, HET
<1% <2% o to 30% AM
<2% <4%
30 to 70% AM
<4% <6% 70 to 90% AM
FREQUENCY MODULATION
3 dB Bandwidth
Internal dc to
>200 kHz
External ac
<20 Hz to >200 kHz
External de 20
Hz to 100 kHz
Maximum Peak Deviation
The smaller of:
(ac coupled 3 MHz
or f
mod
x 2160
band 10
and internal) 1.5
MHz or f
mod
X 1080
9, HET
750 kHz
or f
mod
X 540
8
375 kHz
or f
mod
X 270
7
187 kHz or f
moc
X 135
6
93.8 kHz
or f
mod
X 67.5
5, 1
46.9 kHz
or f
mod
X 33.75
4
23.4 kHz
or f
mod
X 16.88
3
11.7 kHz or f
mod
X 8.44
2
93.8 kHz
or f
mod
X 67.9
1
4-18