User`s guide

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