NF WAVE FACTORY WF1967, Instruction Manual (Operations

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4.7 Setting and Operation of Modulation
WF1967/WF1968
4-59
waveforms where [RAW] is displayed in the [Type] field of the selection screen of arbitrary
waveforms are in array format. On the other hand, arbitrary waveform where [Point] is displayed
in the [Type] field are in control point format. In arbitrary waveforms in this format, the entire
waveform is developed with 8192 points so that the features of the waveform may remain as
much as possible. For the details of the arbitrary waveform,

P.7-2.
Internal modulation phase [ModPhs] means that in a 2 channel unit the modulation source of
channel 1 is set to internal and channel 2 is set to [Ch1]. Phase may be set independently for
channels 1 and 2. Also, it changes to sub waveform phase [SubPhs] when the modulation
function is off or set to external modulation. This allows the phase of the sub waveform to be set
independently of the main output.
f) To modulate with external signal source
Set the modulation source [Source] as external [Ext] on the second page of the setting screen.
The input terminal of the external modulation signal is different according to the modulation
type as follows:

Modulation type is FM, PM, AM, AM(SC), OSFM, PWM
Enter a modulation signal to the external modulation/addition input terminal. The setting of the
modulation width is the value for a signal level of ±1V. Note that if the input level is lower
than ±1V, the modulation width is lower than the specified value.
When the external modulation/addition input terminal is used for the external addition input, the
external modulation function cannot be used.

Modulation type is FSK or PSK
Enter a modulating signal (TTL level) to the external triggering input terminal.
The polarity can be set on the screen.
g) To start modulation
The modulated oscillation starts automatically when entering into the modulated oscillation
mode.
However, the modulated oscillation will not start if the modulation setting is incorrect
([Conflict] will be displayed in the channel status area). When pressing the soft-key [?]
displayed on the left end, the message concerning an improper setting appears. When that is
changed to a proper setting, modulated oscillation starts.

P.14-7
When the modulation is temporarily stopped, press the soft-key [ModStart] to restart the
modulation.
h) To stop modulation
When the soft-key [ModStop] is pressed under modulation, carrier signals are not modulated.
The oscillation mode remains in modulated oscillation mode.
i) To select the signal output from the synchronization/sub-output BNC terminal
Set the sub output selection [SubOut] on the second page of the setting screen. Selection
options change in the oscillation and other modes. Select from the following options.