Axis M7001, Руководство по установке

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Page 12 AXIS M7001 Installation Guide
Unit connectors
Network and power - RJ-45 Ethernet connector supporting Power over Ethernet (PoE class 2).
Using shielded cables is recommended.
Video in - For connecting an analog camera:
• BNC connector. Use a 75 ohm coaxial video cable; recom-
mended maximum cable length is 250 meters (800 feet).
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 reduce image quality.
• 2.5 mm tele plug connector.
RS-422/RS-485 connector - Two 2-pin terminal blocks RS-485/422 serial interface for
connecting auxiliary equipment, for example Pan Tilt Zoom 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.
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
ON OFF
75 Ohm termination
switch
BNC connector
1 2 3 4
TX RX/TX