Model 8642A/B
General Information
Table 1-1. Specifications (part of 3 of 6)
Electrical Characteristics
FREQUENCY MODULATION
Maximum FM Deviation
Band
10 (8642B only)
9
8
7
6
5
4
3
2
1
HET
10 (8642B only)
9
8
7
6
5
4
3
2
1
HET
Resolution
Indicator Accuracy
(Rates 20 Hz to 100 kHz)
FM Distortion
(Rates 20 Hz to 100 kHz)
FM 3 dB Bandwidth
'Maximum deviation may be increased up to tha
than the values shown here. HET band can als
Performance Limits
3 MHz
1.5 MHz
750 kHz
375 kHz
187.5 kHz
6
93.75 kHz
8
46.875 kHz
8
23.437 kHz
8
11.718 kHz
8
93.75 kHz
8
1.5 MHz
(the smaller of:)
3 MHz or f,,^ X 2160
1.5 MHz or f,^ X 1080
750 kHz or f^^ X 540
375 kHz or f,,^ X 270
187.5 kHz or f,,^ X 135
8
93.75 kHz or
f
mod
X 67.5
8
46.875 kHz or f^ X 33.75
8
23.437 kHz or f^, X 16.875
6
11.718 kHz or f^ X 8.4375
6
93.75 kHz or f^ X 67.5
8
1.5 MHz or ^ X 1080
0.7% of setting or 0.0004% of
maximum deviation, whichever is
larger
±(5%
of setting +10 Hz)
4%
2%
0.4%
dc to 200 kHz
20 Hz to 200 kHz
20 Hz to 100 kHz
shown for the HET band (0.1 MHz to 132.1875 M
o be selected with Special Function 8.
Conditions
External dc coupled
External ac coupled or internal
For maximum dc-coupled deviation
For 1/2 max dc-coupled deviation
For 1/15 max dc-coupled deviation
External dc source
External ac source
Internal source
Hz carrier frequency) by selecting deviation larger
rev.07JUNE85
1-9