D-Link DVS-301 - Manual (Page 8)

Building Networks for People
DVS-301 User Manual v1.00
2
Rear Panel
Ethernet 10/100 socket
Connect to Ethernet network with a UTP category 5 cable that cannot exceed 100 meters. Once
the Ethernet cable is connected without error, Video Server will utilize Ethernet interface
regardless of modem connection.
COM port
This RS232 serial port can connect with a modem or included null modem cable to utilize
dial-up network when Ethernet is not available. If Video Server operates with Ethernet interface,
administrators may use this port to control PTZ camera attached to VIDEO.
General I/O terminal block
1 Å DI+ INPUT (Max. 50mA, 12VDC)
2 Å DI- INPUT
3 Å SW_COMMON OUTPUT (short with NC at initial state)
4 Å SW_NOPEN OUTPUT (Max. 1A, 24VDC or 0.5A, 125VAC)
5 Å RS485 B (inverting)
6 Å RS485 A (non-inverting)