ITech IT-M3900D Series User Manual page 97

How to Use
When pin 3 is set to default Off-Status function, pin 3 will trigger level output
based on the [On/Off] state of the instrument. When it is set to (Not-Invert), the
[On/Off] is turned off, and pin 3 outputs high level; the[On/Off] is turned on, and
pin 3 outputs low level.
1. Refer to the figure below to connect pin 3 to the external oscilloscope.
2. Confirm that pin 3 function is set to the default option, namely
3. Turn on [On/Off].
When pin 3 is set to Invert, the output level is completely opposite.
IO-3. Off-Status, Not-Invert.
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True By default (Not-Invert), the out-
put digital signal is 1 (i.e. low lev-
el), and in the case of Invert, the
output is high level.
False By default (Not-Invert), the out-
put digital signal is 0 (i.e. high
level), and in the case of Invert,
the output is low level.
PWM Digital signal of PWM.
PWM Freq
PWM Duty
Basic Operation
Frequency
Duty cycle
85