Axis 221M Guide D'installation page 11

AXIS 221/223M Installation Guide
Unit connectors
Network connector - RJ-45 Ethernet connector. Supports Power over Ethernet. Using
shielded cables is recommended.
Power connector - Mini DC connector. 5.1V DC, max 3.6W. See product label for
connection.
Audio in - 3.5mm input for a mono microphone, or a line-in mono signal (left channel is
used from a stereo signal).
Audio out - Audio output (line level) that can be connected to a public address (PA) system
or an active speaker with a built-in amplifier. A pair of headphones can also be attached. A
stereo connector must be used for the audio out.
10 pin I/O terminal connector block
Pin Function
1 Output A
2 Output B
3 Digital Input 1
Photocoupler Anode (+)
4 Digital Input 1
Photocoupler Cathode (-)
5 Digital Input 2
Photocoupler Anode (+)
6 Digital Input 2
Photocoupler Cathode (-)
7 RS-485-A (non-inverting)
8 RS-485-B (inverting)
9 DC+ Power Output
10 GND
Description
On the external device output terminals (A and B), there is
no distinction between positive and negative (+ and -). The
terminals use a photocoupler and are electrically isolated
from the other internal circuitry.
The maximum load should not exceed 100mA and the max-
imum voltage should be not more than 50V DC. Note: Con-
necting AC to the output will damage the unit.
Photocoupled Input 1. Electrically isolated from the chassis
and connectors, this input can be supplied from an external
DC voltage or the DC Power Input/Output on pins 9 (DC+)
and 10 (GND).
Photocoupled Input 2. As above.
A half-duplex RS-485 interface for controlling auxiliary
equipment.
This can drive the photocoupler inputs or other equipment.
The output voltage level is 3.0 V. A maximum current of
100mA can be sourced from the DC output.
Ground
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