4.3 Modulation
4-58 WF1946B
(4) Select modulation waveform (FUNCTION)
① Use the
and
keys to produce the following display (FUNCTION flashes).
ＳＩＮ
ＰＷＭ：ＴＹＰＥ ＤＥＶＩＡＴＩＯＮ ＦＲＥＱ ＦＵＮＣＴＩＯＮ
② Press the
ENTER
key, then use the
and
keys to produce the following display (SIN
flashes).
ＳＩＮ
ＰＷＭ：ＴＹＰＥ ＤＥＶＩＡＴＩＯＮ ＦＲＥＱ ＦＵＮＣＴＩＯＮ
③ After selecting, press the
EXIT
key to release the setting mode.
The above completes pulse width modulation setting.
Other operations:
• When the oscillation mode is changed to modulation (MODU), modulation occurs at the setting at that
time point.
• To stop modulation : Press the
STOP
key. Resume modulation by pressing the
START
key.
• Duty setting vs. maximum or minimum duties
: Max. duty = Duty setting + (pulse width deviation[%] ÷ 2)
Min. duty = Duty setting − (pulse width deviation[%] ÷2)
• During modulation, multiple pulses may be output in one cycle, as shown below.
• During modulation, if the oscillation mode of the other channel is changed, modulation stops.
• To start or stop modulation of both channels simultaneously on a manual operation or via
remote control (GPIB or USB), set both channels to modulation mode and set OPER-COMMON to
on.
ＯＦＦ
ＯＮ
ＰＷＭ：
3
ＦＵＮＣＴＩＯＮ ＯＰＥＲ－ＣＯＭＭＯＮ
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