Axis Communications Q7436 Installationsanleitung Seite 13

Connectors
Bus connector
The bus connectors are the physical interfaces to the video encoder chassis that provide power,
network, RS485, and I/O terminal connections.
BNC connector
Each video input is terminated using a coax/BNC connector.
Connect a 75 Ohm coaxial video cable; the recommended maximum length is 250 m (800 ft).
Note
75 Ohm video termination can be enabled/disabled for the video input through the
product's web page at Video > Camera Settings > Video termination. Video termination is
enabled on factory default. If the product is connected in parallel with other equipment,
for optimum video quality, it is recommended that video termination is enabled only for
the last device in the video signal chain.
Pin assignments
Pin assignments for the I/O connector of the AXIS 291 1U Video Server Rack
Pin Function
1
+12 V out, 100mA
2
GND
3
Channel 1, Configurable
I/O 1
4
Channel 2, Configurable
I/O 1
5
Channel 3, Configurable
I/O 1
6
Channel 4, Configurable
I/O 1
7
Channel 5, Configurable
I/O 1
8
Channel 6, Configurable
I/O 1
AXIS Q7436 Video Encoder Blade
Description
Digital input - Connect to GND
to activate, or leave floating (or
unconnected) to deactivate.
Digital output - 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.
13
Min input = – 40 V DC
Max input = + 40 V DC
Max load = 100mA
Max voltage = + 40 V DC
(to the transistor)
EN