NF WAVE FACTORY WF1967, Instruction Manual (Operations

Page: 116 / 330

4.7 Setting and Operation of Modulation
WF1967/WF1968
4-66
4.7.8 Setting AM
The output amplitude changes according to the instantaneous value of modulation signal.
For the modulation setting screen and the common operation method, please refer to P.4-55, P.4-58
a) Example of AM
When the modulating signal swings to a positive side, the amplitude of the output signal
increases.
b) To select AM
c) Waveform where AM is unavailable
AM cannot be performed with DC.
Amplitude sweep cannot be performed with AM.
d) Setting items necessary for AM
Set the carrier amplitude [Amplitude] on the first page of the setting screen.
Set the modulation depth [Depth] on the second page of the setting screen.
The output amplitude changes within the range of the carrier amplitude setting value (Vp-p) / 2 x
(1 ± modulation depth (%) / 100).
When the modulation depth is 0% or the modulation is stopped, the output amplitude is half of
that in the continuous oscillation mode.
When the modulation depth is 100%, the maximum value of the output amplitude envelope is
equal to the carrier amplitude setting value.
Select [AM] in the modulation type setting menu
Set the modulation type [ModType] to
AM [AM] on the second page of the
setting screen when the oscillation mode
[Mode] is set to modulation [Modulation]
and on the third page of the setting
screen when the mode is burst [BURST]
or sweep [SWEEP].
Modulation sync signal
(during internal modulation)
Modulation signal
Output signal
Amplitude setting value (Vp-p)/2×
(1 +Modulation depth (%)/100)
Amplitude setting value (Vp-p)/2×
(1 -Modulation depth (%)/100)