NF WAVE FACTORY WF1967, Instruction Manual (Operations

Page: 39 / 330

3.2 I/O Terminals
WF1967/WF1968
3-9
WF1968 are separate.
Reference phase for the modulation source is an internal modulation, there is in addition to the main
output, signal that the value set in the modulation phase [ModPhs] has been added will be used in actual
modulation.

About reference phase synchronization signal
The reference phase synchronization output, it is the duty of 50% of TTL level logic signal that rises at
zero degrees of reference phase. By changing the phase setting, can change the phase between the
reference signal and the phase synchronization waveform output.

P.4-30
At high frequencies, actually comes out phase difference at 0 ° set by the difference in propagation
delay time of the output circuit of the main waveform output and synchronous / sub output. Especially
when the 20V range, main waveform output signal in addition to the following cases of 4V range will
be delayed about 5ns. These phase differences can be adjusted by the phase setting of.

Output Characteristics
Output voltage TTL level (low: 0.4V or lower, high: 2.7V or higher), -3V to +3V/open
Output impedance
50Ω
Load impedance
50Ω or higher recommended
Signal GND Same potential as the same channel waveform output, insulated from
the enclosure (maximum 42Vpk).
In WF1968, also insulated between channels (maximum 42Vpk)