NF WAVE FACTORY WF1967, Инструкция по эксплуатации

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4.7 Setting and Operation of Modulation
WF1967/WF1968
4-61
4.7.4 Setting FM
The output frequency 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 FM
When the modulating signal swings to a positive side, the frequency shift of the output signal
increases. (Frequency will increase)
b) To select FM
c) Waveform or mode where FM is unavailable
Noise, pulse, and DC cannot perform FM. FM cannot be used with frequency sweep.
Setting FM will force quit the Synclator function.
d) Setting items necessary for FM
Set the carrier frequency [Freq] on the first page of the setting screen.
Set the peak frequency deviation [Deviation] on the second page of the setting screen.
The output frequency changes within the range of carrier frequency ± peak frequency deviation.
When the modulation source [Source] is internal [Int], set the modulation waveform [ModFctn],
modulation frequency [ModFreq], and modulation phase [ModPhs]. Internal [Int] cannot be
selected during sweep oscillation mode.
When the modulation source [Source] is external [Ext], enter the modulating signal to the
external modulation/addition input terminal. It reaches the specified peak frequency deviation at
±1V input.
Select [FM] in the modulation type setting menu
Set the modulation type [ModType] to FM
[FM] 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