HP 8642A Operation And Calibration Manual

Operation
Model 8642A/B
Modulation, <PM (cont'd)
Procedu res
INT
200*
100
50
MAXIMUM
25
mM
DEVIATION
12.5
(Radians INT;
6.25
Radians per
volt EXT)
3.125
1.5625
o 78125
o 1
10ll
9
B
7
DIVIDE BANDS
4 8 16 33 65 132 264 528 1057 2115*
RF FREQUENCY (MHz)
Actual band boundaries are listed in Table 3-11
(~B542B ONLY)
Figure 3-15. ~M Deviation Limitations for each RF Frequency Band
YOll can determine whether the Signal Generator will select a divide band or the
heterodyne band. Assume an RF frequency of 30 MHz, if you select a deviation of 3
radians, the Signal Generator will use divide band 4 since the maximum possible
deviation for band 4 is 3125 radians (unless Special Function 8, Prefer Heterodyne Band,
is selected). If you select a deviation of 25 radians, the Signal Genera t or will
a utomatically select the heterodyne band. (Note that the maximum possible devia lion
for the heterodyne band is 100 radians.)
Note: Put the instrument in its initialized state by selecting IINSTR PRESED.
<PM can be configured to use either the Signal Generator's internal modulation oscIllator,
an external source, or combinations of the two sources.
How to Set <liM with the Internal Source (lising the Modulation Oscillator)
Source
<PM ( [SHIFT] COO ) rnIJ
Rate
[fv10DIffEIdJ and the desired value of modulation frequency (in kHz or Hz).
Deviation
<PM ( [JililFT) LIM] ) and the desired vallie of <i>fvl deviation in radians ( CEIAU1£J )
3-120

HP 8642A Specifications

General

Brand	HP
Model	8642A
Category	Inverter
Language	English