Characteristics - HP 8642A Operating Manual

Model 8642A/B
Operation
RF FREQUENCY
Description The Signal Generator's fundamental synthesized frequency range of 528.750001 to
1057.500000 MHz is translated over the RF output frequency range listed below. The
output frequency range is obtained through frequency division and heterodyne
conversion (and frequency multiplication for the 8642B.)
Table 3-10. RF Frequency Operating Characteristics
Electrical
Characteristics
Frequency
Range
Underrange
Resolution
Frequency
Switching Time
•Below 10 kHz, the
Performance Limits
0.100000 to 1057.500000 MHz
0.100000 to 2115.000000 MHz
0.000001 to 0.099999 MHz*
1 Hz (0.1 Hz with Special
Function 240 or 241)
85 ms
output level drops rapidly.
Conditions
8642A
8642B
To within 100 Hz
of final frequency
The divide bands divide from the fundamental band (divide band 9) as shown in Table
3-11 below. Although the heterodyne band (Het Band) covers a frequency range that is
included in divide bands 1 through 6 (0.100000 to 132.187 500 MHz), the heterodyne
conversion technique allows improved modulation characteristics and wider sweep spans
for Phase Continuous Frequency Sweep.
Table 3-11. RF Frequency Band Ranges
Carrier Frequency (MHz)
1057.500001 to 2115.000000
528.750001 to 1057.500000
264.375001 to 528.750000
132.187501 to 264.375000
66.093751 to 132.187500
33.046876 to 66.093750
16.523438 to 33.046875
8.261719 to 16.523437
4.130860 to 8.261718
0.100000 to 4.130859
0.100000 to 132.187500
Band
10
(8642B only)
9
8
7
6
5
4
3
2
1
HET
Divide Number
0.5
1
2
4
8
16
32
64
16
256
1
3-39