ITech IT-M3900D Series User Manual page 145

Output signal
Pulse
•
Input/Output Function
The IO-1 ~ IO-7 pins are featured default function, the user can setting the
function of pin according to requirement. The Input and Output are the gen-
eral digital I/O function, and the parameter settings and functions of the sev-
en pins are the same.
The IO-1~IO-7 pins provide default functions. Users can realize control ac-
cording to the functions defined. Users can also reset the input or output
properties of the present pin and customize the function use of the pin ac-
cording to their needs.
– When pins 1 to 7 are configured to Output function, either high level
(False) or low level (True) can be Output.
– When pins 1 to 7 are configured to Input function, an external signal can
be Input to this pin, and the instrument can detect the state of the exter-
nal signal.
– Under the default condition (Not-Invert), when the pin (1 to 7) is config-
ured as Output→PWM, the user needs to set the frequency (PWM Freq)
and duty cycle (PWM Duty) values. For example, if the PWM Freq is set
to 100Hz and the PWM Duty is set to 10%, the output waveform is as
follows:
Copyright © Itech Electronic Co., Ltd.
Typical: 0V
Low level signal
Range: -5V-0.8V
Current: ≤100mA
Voltage level: 5V
High level signal
Current: ≤1mA
Voltage level: 0V
Low level signal
Current: 0.5mA
Level rise slope
10us
Level fall slope
2us
Width 30us
Basic Operation
134