NF wf1966, Instruction Manual

Page: 115 / 198

4.3 Modulation
WF1966
4-53
„
Pulse width modulation (PWM) (
MODE
→
MODU
→
TYPE : PWM)
Operation to produce a pulse width modulated waveform output is described below. The example is a
squarewave (duty variable), duty 50 %, frequency 800 Hz, amplitude and DC offset arbitrary.
Minimum duty: 10%
1.25ms (800Hz ）
Maximum duty: 90%
20ms (50Hz)
Operation:
(1) Set modulation TYPE to pulse width (PWM)
①
Press the
MODE
key, then the
MODU
key.
② Use the and keys to produce the following display (TYPE flashes).
F M
A M O F S M P M P W M
F M ： T Y P E D E V I A T I O N F R E Q F U N C T I O N
③
Press the
ENTER
key, then use the and keys to produce the following display
(PWM flashes).
F M A M O F S M P M P W M
P W M
：
T Y P E D E V I A T I O N F R E Q F U N C T I O N
④
This sets the modulation type for pulse width. Press the
EXIT
key once to release the type
setting mode.
The waveform is automatically set to squarewave (variable duty) during PWM. The waveform
(FUNCTION) cannot be selected.