GW Instek SFG-2000 Series - Manual (Page 19)

AMPLITUDE MODULATION
37
A
MPLITUDE MODULATION
• AM applies only to SFG-2100 series.
• Modulation and Sweep (page35) cannot be used together.
Activate AM
1. Output the waveform, Sine/Triangle/Square
(page25).
2. Press the Shift key, then Dot (AM). AM is activated
and the sign appears on the display.
AM
AM %
SWEEP SPAN
0 MAX
1. Pull the SWEEP SPAN knob (AM
%).
2. Turn the knob left (shallow) or
right (deep).
Set AM depth
Range 0 ~ 100%
SFG-2000 series uses an internal 400Hz sine wave as the
default modulating signal.
1. Connect the modulating signal to the rear panel
terminal.
2. Press the Shift key, then 0 (EXT MOD). External
modulation is activated.
0
EXT
Use external
modulating
signal
Frequency Range DC ~ 1MHz
SFG-2000 Series User Manual
38
F
REQUENCY MODULATION
• FM applies only to SFG-2100 series.
• Modulation and Sweep (page35) cannot be used together.
Activate FM
1. Output the waveform. Sine/Triangle/Square
(page25) or TTL/CMOS (page31).
2. Press the Shift key, then 4 (FM). FM is activated and
the sign appears on the display.
FM
4
When FM is activated, the duty cycle of
Square/TTL/CMOS wave is fixed to 50%.
The output frequency becomes the Center Frequency.
FM Dev
AM %
SWEEP SPAN
0 MAX
1. Push the SWEEP SPAN knob
(FM Dev).
2. Turn the knob left (shallow) or
right (deep).
Set FM
deviation
Deviation
Range 0 ~ ±50kHz, centered at 1MHz