Model
8642A/B
General
Information
Table
1-1.
Specifications
(part
of
3 of
6)
Electrical
Characteristics
Performance
Limns
Conditions
FREQUENCY MODULATION
Maximum
FM
Deviation
External dc coupled
Band
10 (8642B only)
3 MHz
9
1.5 MHz
8
750 kHz
7 375 kHz
6
187.5
kH
z
6
5
93.75
kH
z
6
4
46.875 kH
z
6
3
23.437 kH
z
6
2
11.718 kH
z
6
1
93.75
kH
z
6
HET
1.5 MHz
(the
smaller of:) External ac coupled or internal
10 (8642B only)
3 MHz
or
f
mod
x 2160
9
1.5 MHz or
f
mod
x 1080
8
750 kHz or
f
mod
X 540
7
375 kHz or f
mod
X 270
6
187.5 kHz or f
mod
X 135
6
5
93.75 kHz or f
mod
X 67.5
6
4
46.875 kHz or
f
mod
X 33.75
6
3
23.437 kHz or
f
mod
X 16.875
6
2
11.718 kHz
or
f
mod
X 8.4375
6
1
93.75 kHz or f
mod
X 67.5
6
HET
1.5 MHz
or
f
mod
X 1080
Resolution
0.7%
of setting
or
0.0004%
of
maximum deviation, whichever
is
larger
Indicator Accuracy
:!:(5% of setting
+10
Hz)
(Rates 20 Hz to 100 kHz)
FM Distortion 4%
For maximum dc-coupled deviation
(Rates
20
Hz
to
100 kHz)
2%
For 1/2 max dc-coupled deviation
0.4% For 1/15 max dc-coupled deviation
FM
3 dB Bandwidth
dc to 200 kHz External dc source
20
Hz
to 200 kHz External ac source
20
Hz
to
100 kHz Internal source
6Maximum deviation may be increased up
to
that shown for the HET band
(0.1
MHz to 132,1875 MHz carrier frequency) by selecting deviation larger
than the values shown here. HET band can also be selected with Special Function
6.
rev07JUNE85
1-9
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