GV200 User Manual
3.3.9.
Digital Input with Interrupt
DIN2 and DIN3 are digital inputs which have interrupt. DIN2 is negative trigger and DIN3 is
positive trigger.
The example connections are same as showed in chapter 3.3.7.
DIN2 is also recommended to support panic button function and the connection is showed as
follow.
Figure 12: Example connection of panic button
3.3.10.
Analog Input
The PIN 3/5/7 are used for analog to digital converter. GV200 can support different type
sensors such as resistance-type and capacitance-type due to the differences between the three
analog inputs. Please note it is an average value based on the sample rate from 2 to 24
seconds, which means the burst on voltage input may not be detected.
3.3.10.1.
Resistance-type Sensor
AIN1 (PIN 3) is designed to support some resistance-type sensors and there is an internal
pull-up resistor (100K Ohm) on its channel. Due to the internal pull-up resistor, user can
connect resistance-type sensors directly between analog inputs and AGND. The follow figure
is the example connection of AIN1 with NTC resistor. The recommended value of NTC
resistor is 100K@2
5℃.
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