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Page 16 AXIS Q7424-R Installation Guide
RS-485/RS-422 connector - Two 2-pin terminal blocks for RS-485/RS-422 serial interface used
to control auxiliary equipment, e.g. PTZ devices.
The RS-485/RS-422 serial port can be configured to support:
• Two-wire RS-485 half duplex
• Four-wire RS-485 full duplex
• Two-wire RS-422 simplex
• Four-wire RS-422 full duplex point to point communication
Note:
Connect the signals according to the letters on the terminal block and the description in the image
above; then turn the connector 180° and plug into the unit.
SD memory card slot - The SD memory card can be used for local recording with removable
storage.
BNC connector - Connect a 75 ohm coaxial video cable (max. length 800 feet (250 meters)).
Note: For each video input 75 Ohm video termination can be enabled/disabled via the product's web page
from Setup > Video & Audio > Video (1, 2, 3, or 4) > Camera Settings. These terminations are enabled
on factory default. In cases where the product is to be connected in parallel with other equipment, for
optimum video quality, it is recommended that termination be enabled for only the last device in the
video signal chain.
LED indicators
Function Pin Notes
RS-485/RS-422 RX/TX A 1 (RX) For full duplex RS-485/RS-422
(RX/TX) For half duplex RS-485
RS-485/RS-422 RX/TX B 2
RS-485/RS-422 TX A 3 (TX) For full duplex RS-485/RS-422
RS-485/RS-422 TX B 4
LED Color Indication
Network Green Steady for connection to a 1 Gbit/s network. Flashes for network activity.
Amber Steady for connection to 10/100 Mbit/s network. Flashes for network activity.
Unlit No network connection.
Status Green Steady green for normal operation.
Amber Steady during startup, during reset to factory default or when restoring settings.
Red Flash for failed upgrade.
Power Green Normal operation.
Amber Flashes green/amber during firmware upgrade.
RS-485/422
RS-485/422
RX/TX
RX/TX
1 2 3 4
TX
A B
A B