Axis Communications Video Encoder AXIS Q7401 - Manual (Page 15)

AXIS Q7401 Installation Guide Page 15
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LISH
RS-422/RS-485 connector - Two 2-pin terminal blocks for RS-485/422 serial interface used to
control auxiliary equipment, e.g. PTZ devices.
The RS-485/422 serial port can be configured in the following port modes:
• Bidirectional RS-485 half-duplex port for data transmission
using two wires, one combined RX/TX pair.
• Bidirectional RS-485 full-duplex port for data transmission
using four wires, one RX pair and one TX pair.
• Unidirectional RS-422 port for transmitting or receiving data
using two wires, RX- or TX pair.
• Bidirectional RS-422 full-duplex port for data transmission
(point-to-point) using four wires, one RX pair and one TX pair.
SDHC memory card slot - The high capacity 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: If the video source is to be connected in parallel with other equipment using a BNC T adaptor, disable
the input termination by setting the 75 ohm termination switch to OFF. Failure to do so may cause
reduced image quality.
LED indicators
Function Pin Notes
RS 485/422TX(A) 1 TX pair for RS-422 and 4-wire RS-485
RS 485/422TX(B) 2
RS-485A alt RS-485/422RX(A) 3 RX pair for all modes (combined RX/TX for 2-wire RS-485)
RS-485B alt RS-485/422RX(B) 4
LED Color Indication
Network Green Steady for connection to a 100 Mbit/s network. Flashes for network activity.
Amber Steady for connection to 10 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 Slow flash for failed upgrade.
Power Green Normal operation.
Amber Flashes green/amber during firmware upgrade.
1 2 3 4
TX RX/TX