NF WAVE FACTORY WF1967, Инструкция по эксплуатации

Страница: 114 / 330

4.7 Setting and Operation of Modulation
WF1967/WF1968
4-64
external modulation/addition input terminal. It reaches the specified peak phase deviation at ±1V
input.
4.7.7 Setting PSK
A binary frequency deviation modulation that the output phase offsets according to the modulation
signal.
For the modulation setting screen and the common operation method, please refer to P.4-55, P.4-58
a) Example of PSK
Because the phase changes abruptly, the output signal waveform is discontinuous.
b) To select PSK
c) Waveform or mode where PSK is unavailable
Noise and DC cannot perform PSK.
PSK cannot be used in sweep oscillation mode and burst oscillation mode except auto burst.
Setting PSK will force quit the Synclator function.
d) Setting items necessary for PSK
Set the phase deviation [Deviation] on the second page of the setting screen.
The state of phase deviation zero and the state of a specified phase deviation appear alternately
in the output.
Note that the phase does not change within the range of ± phase deviation.
When the modulation source [Source] is internal [Int], set the modulation frequency [ModFreq]
Select [PSK] in the modulation type setting menu
Set the modulation type [ModType] to
PSK [PSK] on the second page of the
setting screen when the oscillation mode
[Mode] is set to modulation [MODU] and
on the third page of the setting screen
when the mode is sweep [SWEEP].
Modulation sync signal
(during internal modulation)
Modulation signal
(during external
modulation,
positive polarity)
Output signal
Phase deviation
addition
Phase deviation
addition
Phase deviation
zero