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AM Modulation Depth Verification
This test verifies the modulation depth specification.
Select each function generator output in the table below. Use a DMM to
measure the function generator ACrms output voltage. Compare the
measured results to the test limits shown in the table. This is a HIGH Z
output termination test.
Agilent 33120A Measurement
AM Modulation
Function
OUT
1
TERM
Ampl Freq Shape Freq Depth Nominal Error
Q Sine wave HIGH Z 1.0 Vrms 1.00 kHz Sinewave 100 Hz 0% 0.50 Vrms
0.005 Vrms
Sine wave HIGH Z 1.0 Vrms 1.00 kHz Sinewave 100 Hz 100% 0.61 Vrms
0.0061 Vrms
1
Output termination set using front panel controls. HIGH Z assumes no load on
output. 50W assumes a 50W 0.1W load on output.
4
Chapter 4 Calibration Procedures
AM Modulation Depth Verification
61