GW Instek GFG-3015 - Manual (Page 29)

GFG-3015 p.25
INT/EXT
RATE
FM
AM
INT/EXT
RATE
SOURCE
SPAN
SOURCE
SPAN
SWP CF
SYM
6.11 Setup of AM Modulation
The AM modulation function offers internal sine, square, and triangle (ramp)
signals. Besides, You can select the modulation signal from external
(Modulation/Trigger Input BNC).
Set the main output function by using button .
Set the main output frequency by using button and number keys.
Set the main output Amplitude by using button and number keys.
Select the modulation mode by using button.
Select the modulation signal source by using + .
Press to set up modulation RATE value (Range 0.01Hz ~ 10kHz).
Select the modulation signal by pressing + buttons.
GFG-3015 offers sine, square, and triangle (ramp) signals for internal
modulation.
Select the amplitude modulation depth by pressing buttons (Range
100%).
Press to set the Duty of modulation signal (Range 90%:10%:90%).
Press to start performing amplitude modulation.
Note: 1. Please refer to the setup of amplitude modulation as the example below.
2. When the modulation signal sources from external are selected, the Rate,
Span (Depth), Symmetry and source selection will disable as these functions
are operated on internal source mode only.
3. It won’t make any change on execution and result by taking different step
sequence.
4. GFG-3015 can output waveform synchronizing with its modulation function. In
the example of setting up amplitude modulation, the Modulation output terminal
will output the waveform of sine at 100Hz.
Example of the Setup of AM Modulation
To set the following conditions:
Main function: Sine Wave. Modulation rate: 100Hz.
Main Frequency: 10kHz. Modulation Signal Source: Sine.
Main Output Amplitude:10Vpp Modulation Depth: 80%.
Modulation Mode: Amplitude Modulation Signal Symmetry: 50%.
Modulation Source: INT
Procedure:
Press to select SINE wave for main output.
SHIFT
MOD/ON
SHIFT
FUNC
FUNC
AMPL
FREQ