User`s manual

40
AXIS P1343/P1344 - Unit connectors
I/O terminal connector - Used in applications for e.g. motion detection, event triggering,
time lapse recording and alarm notifications. In addition to an auxiliary power and a GND
pin, it provides the interface to:
• 1 digital output - For connecting external devices such as relays and LEDs. Con-
nected devices can be activated by the VAPIX® Application Programming Interface,
output buttons on the Live View page or by an Event Type. The output will show as
active (shown under Events > Port Status) if the alarm device is activated.
• 1 digital input - An alarm input for connecting devices that can toggle between an
open and closed circuit, for example: PIRs, door/window contacts, glass break detectors, etc. When a signal is received
the state changes and the input becomes active (shown under Events > Port Status).
The following connection diagram gives an example of how to connect an auxiliary device to AXIS P1343/P1344.
Function Pin Notes Specifications
GND 1 Ground
3.3V DC Power 2 Can be used to power auxiliary equipment.
Note: This pin can only
be used as power out.
Max load = 50mA
Digital Input 3 Connect to GND to activate, or leave floating (unconnected) to deac-
tivate.
Min. input = -40V DC
Max. input= +40V DC
Digital Output 4 Uses an open-drain NFET transistor with the source connected to
GND. If used with an external relay, a diode must be connected in
parallel with the load, for protection against voltage transients.
Max. load =100 mA
Max. voltage = + 40V
DC
Pin 3
Pin 4
Pin 2
Pin 1
1
2
E.g. push button
3
4
3.3V
max. 50mA
D
S
G