Tektronix AFG3000 - Manual (Page 47)

Reference
AFG3000 Series Arbitrary/Function Generators Reference Manual 2-7
Modulation Parameter
Menu
Table 2-6 shows the Modulation Parameter Menu.
Amplitude Modulation. Amplitude modulation is a modulation technique in which
the amplitude of the carrier frequency is modified by the amplitude of the modu-
lating waveform (internal or external modulation source).
The modulation depth is expressed as a percentage and represents the extent of the
amplitude variation.
Frequency Modulation. Frequency modulation is a modulation technique in which
the carrier frequency is modified by the amplitude of the modulating waveform.
The carrier frequency must always be greater than or equal to the deviation. Also
the sum of the carrier frequency and deviation must be less than or equal to the
maximum frequency for the selected waveform.
Table 2-6: Modulation Parameter Menu
First Level Second Level Description
Modulation
Type
[AM] AM
FM
PM
FSK
PWM Selects modulation type.
[AM] Source
Internal
External
Selects modulation source (internal or external)
for AM, FM, PM, FSK, or PWM.
AM, FM, PM, PWM
Frequency,
or FSK Rate Sets modulation frequency or FSK rate.
Modulation Shape
1
1. If you specify Internal as the memory type, you can select the modulation shape from the following:
Sine
Square
Triangle
Up Ramp
Down Ramp
Noise
Arb (User1 to User4)
Edit Memory
Memory
Internal
USB
Selects a memory type (internal or USB).
(blank)
Change Directory
Opens a directory in a USB memory.
OK
Cancel
Depth/Deviation/
Hop Frequency Sets modulation depth for AM, deviation for FM
and PM, or Hop Frequency for FSK.