Tektronix AFG31052 User Manual

Function introduction
62 AFG31000 Series Arbitrary Function Generator User's Manual
NOTE. You can output frequency modulation or phase modulation waveforms using the same steps
above. You cannot choose Pulse, Noise, or DC carrier waveform. You can select an internal or external
signal as an AM source. If you select an external source and set the modulation depth to 120%, the
output is at the maximum amplitude when a ±1 V
pp
signal is applied to the rear panel EXT MODULATION
INPUT connector. You can select a modulation shape from the internal memory or USB flash drive.
The following equations show the output amplitude of AM, FM, and PM modulation (in this example,
sine waveform is used for carrier waveform and modulation waveform):
Figure 36: Waveform-modulation equations
The following table indicates what the symbols in the previous equations represent.
Carrier amplitude
A [V
p-p
]
Carrier frequency
fc [Hz]
Modulation frequency
fm [Hz]
Time t [sec]
AM modulation depth
m [%]
FM deviation
D [Hz]
PM deviation
P [degree]
The following table indicates the relationships between modulation depth and maximum amplitude for
AM modulation waveform (internal modulation source is selected).
Depth
Maximum amplitude
120%
A (V
pp
)
100%
A (V
pp
) * 0.909
50%
A (V
pp
) * 0.682
0%
A (V
pp
) * 0.455

Tektronix AFG31052 Specifications

General

Brand	Tektronix
Model	AFG31052
Category	Inverter
Language	English