Agilent Technologies E5500A User Manual page 186

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7
Absolute Measurement Examples
Microwave Source
Figure 7-46 Enter Source Information
Table 7-18 Tuning Characteristics for Various Sources
VCO Source
Carrier
Freq.
Agilent 8662/3A
υ
EFC
DCFM
Agilent 8642A/B
Agilent 8644B
7-70
E5500 Phase Noise Measurement System Version A.02.00
For example, to calculate the Tuning Constant value to enter for
EFC tuning when the center frequency is 18 GHz:
G
(5 E - 9) X (18 E + 9) = 90
c
Enter the Tune Range of VCO (see
d
Enter the Center Voltage of VCO (see
e
Enter the Input Resistance of VCO (see
Tuning Constant
(Hz/V)
5 E – 9 x υ
0
0
FM Deviation
FM Deviation
FM Deviation
Center
Voltage Tuning
Range ( ± V)
Voltage
(V)
0
10
0
10
0
10
0
10
Table
7-18).
Table
7-18).
Table
7-18).
Input
Tuning
Resistance
Calibration
( Ω)
Method
1E + 6
Measure
1 K (8662)
Compute
600 (8663)
Compute
600
Compute
600
Compute
Document Part No. E5500-90024 Ed. 1.0

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