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Table 18-1
Note: Special Function 120 must be enabled for DCFM
Model
Band
Numbe
Option
Minimum
r
(MHz)
8643A
002
1030
8643A
002
515
8643A
Standar
515
d
8643A
Both
257.5
8643A
Both
128.75
8643A
Both
64.375
8643A
Both
32.1875
8643A
Both
16.09375
8643A
Both
8.046875
8643A
Both
4.0234375
8643A
Both
2.01171875
8643A
Both
1.005859375
8643A
Both
0.5029296875
8643A
Both
0.25146484375
1
Takes into account limited tuning resolution available in linear FM (Special Function 120, refer to
Functions" on page
18-15).
2
The Agilent/HP 8643A defaults to Mode 2 operation.
3
Wideband FM: Use Special Function 125 (refer to
Agilent/HP 8643A
Mode Keys
Reference Graphs and Tables
Agilent/HP 8643A Frequency Limits
Agilent/HP 8643A Frequency Limits
Agilent/HP 8643A Frequency Limits
Band
Maximum
Mode 2
(MHz)
2060
2000000
1029.99999999
1000000
1030
1000000
514.99999999
500000
257.49999999
250000
128.74999999
125000
64.37499999
62500
32.18749999
31200
16.09374999
15600
8.04687499
7810
4.02343749
3900
2.01171874
1950
1.005859365
976
0.5029296775
488
"How to Access Special Functions" on page
•
The [Mode 1] key provides the maximum FM deviation and minimum
RF output switching time. Noise level is highest in this mode, as shown
in the following table.
•
The [Mode 2] key provides a median range of FM deviation and RF
output switching time, as shown in the following table. The
Agilent/HP 8643A defaults to Mode 2 operation.
18-14 Agilent Technologies E5500 Phase Noise Measurement System
1
Minimum Recommended PTR (Peak Tune Range)
PTR =FM Deviation x VTR
2
Mode 1
20000000
10000000
10000000
5000000
2500000
1250000
625000
312000
156000
78100
39000
19500
9760
4880
3
"How to Access Special
18-15).
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