Axis Q1635 Guide D'installation page 21

Power connector
2-pin terminal block for DC power input. Use a Safety Extra Low Voltage
(SELV) compliant limited power source (LPS) with either a rated output
power limited to ≤100 W or a rated output current limited to ≤5 A.
RS485/RS422 connector
Two 2-pin terminal blocks for RS485/RS422 serial interface used to control auxiliary equipment
such as pan-tilt devices.
The serial port can be configured to support:
• Two-wire RS485 half duplex
• Four-wire RS485 full duplex
• Two-wire RS422 simplex
• Four-wire RS422 full duplex point to point
communication
Function
RS485B alt
RS485/422 RX(B)
RS485A alt
RS485/422 RX(A)
RS485/RS422 TX(B)
RS485/RS422 TX(A)
Important
The recommended maximum cable length is 30 m (98 ft).
Operating Conditions
The Axis product is intended for indoor use.
AXIS Q1635 Network Camera
Pin Notes
1
RX pair for all modes (combined RX/TX for 2-wire RS485)
2
3
TX pair for RS422 and 4-wire RS485
4
21
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