Agilent Technologies E5500A User Manual page 410

Table 18-3
Note: Special Function 120 must be enabled for DCFM
Model Band
Numbe Option Minimum
r (MHz)
8644B 002 1030
8644B 002 515
8644B Standar 515
d
8644B Both 257.5
8644B Both 128.75
8644B Both 64.375
8644B Both 32.1875
8644B Both 16.09375
8644B Both 8.046875
8644B Both 4.0234375
8644B Both 2.01171875
8644B Both 1.005859375
8644B Both 0.5029296875
8644B Both 0.25146484375
1
Takes into account limited tuning resolution available in linear FM (Special Function 120, refer to
Functions" on page 18-15).
Agilent/HP 8644B
Mode Keys
Reference Graphs and Tables
Agilent/HP 8644B Frequency Limits
Agilent/HP 8644B Frequency Limits
Agilent/HP 8644B Frequency Limits
Band
Maximum Mode 3
(MHz)
2060 200000
1029.99999999 100000
1030 100000
514.99999999 50000
257.49999999 25000
128.74999999 12500
64.37499999 6250
32.18749999 3120
16.09374999 1560
8.04687499 781
4.02343749 390
2.01171874 195
1.005859365 97.6
0.5029296775 48.8
•
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 [Mode 3] key provides the lowest noise level at the RF output, FM
deviation bandwidth is narrower, and the RF switching time is slower
than in either Modes 1 or 2.
18-16 Agilent Technologies E5500 Phase Noise Measurement System
1
Minimum Recommended PTR (Peak Tune Range)
PTR =FM Deviation x VTR
Mode 2
2000000
1000000
1000000
500000
250000
125000
62500
31200
15600
7810
3900
1950
976
488
Mode 1
20000000
10000000
10000000
5000000
2500000
1250000
625000
312000
156000
78100
39000
19500
9760
4880
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