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The carrier-to-sideband ratio
NO T E
-----
sb
Source
E5505a_meas_car_side_ratio
02 Mar 04 rev 1
Figure 228 Measuring the carrier-to-sideband ratio
4
5
.
DUT with AM
E5505a_meas_cal_constant
02 Mar 04 rev 1
Figure 229 Measuring the calibration constant
6
7
The quadrature meter should be at zero volts due to the blocking capacitor at the AM
NO T E
detector's output.
Agilent E5505A User's Guide
percentAM
C
---------------------------- -
=
20
log
100
Modulation
analyzer
Reconnect the AM detector and enter the carrier-to-sideband ratio and
modulation frequency.
Measure the AM detector calibration constant
AM detector
Turn off AM.
Measure noise data and interpret the results.
AM Noise Measurement Fundamentals
C
for AM is:
- -- - -
sb
=
6dB
Test set
Noise
input
(Figure
229).
11
295
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