NF WAVE FACTORY WF1967, Instruction Manual (Operations

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4.7 Setting and Operation of Modulation
WF1967/WF1968
4-60
Modulation function on and
internal modulation
Modulation function off or
external modulation
Waveform reference phase
synchronization[Sync]
Waveform reference phase
synchronization[Sync]
Internal modulation
synchronization [ModSync]
-
Internal modulation waveform
[ModFctn]
*1
Sub waveform [SubFctn]
Output disabled [Off] Output disabled [Off]
*1: Cannot be selected in FSK or PSK.

When [Sync] is selected,
Signals with TTL level that are rising at the reference phase of waveform are output from the
synchronization/sub-output terminal.

When [ModSync] is selected,
Signals with TTL level that synchronize with the internal modulation waveform are output from
the synchronization/sub-output terminal. A square wave with duty 50% rising at the zero phase
of the internal modulation waveform. When the internal modulation waveform is a noise, it is
fixed to the low level.
When a signal under modulation is observed with the oscilloscope etc., it can be used as a
trigger signal of the oscilloscope.

When [ModFctn] is selected,(only when modulation function is on and using internal
modulation)
The internal modulation waveform is output from the synchronization/sub-output BNC terminal.
The amplitude can be set in the sub output amplitude [SubAmp] and the DC offset in sub output
offset [SubOfs] with a maximum signal level of ±3V/open.
When the modulation width is 0 the modulation waveform has no effect on the main output. This
allows the sub output to be used as an independent signal source with its own frequency setting.
This means that the WF1967 can be used as an output oscillator with 2 independent channels and
the WF1968 as a 4 channel independent output oscillator.

When [SubFctn] is selected,(only when using external modulation)
Outputs a sub waveform from the synchronization/sub output BNC terminal. The frequency is
same as main output. The waveform, amplitude, offset and phase are settable independent from
main output. See

P.4-50.

When [Off] is selected.
The output will be low level. This helps to reduce interference from the synchronization output
signal.

When [BrstSync] [SwpSync] [Mkr] [X-Drive] are selected
Refer to the explanations of burst oscillation mode (

P.4-88) and sweep oscillation mode
(

P.4-71).