Vivotek VS2403 manual Power source, RS485 interface, Digital I/O control

9Opto-isolated sensor input 1(+)

10Opto-isolated sensor input 1(-)

11Opto-isolated sensor input 2(+)

12Opto-isolated sensor input 2(-)

13RS485 A

14External power input

15External power input

16Relay output 3 – Normal Open

17Relay output 3 – Common

18Relay output 3 – Normal Close

19Relay output 4 – Normal Open

20Relay output 4 – Common

21Relay output 4 – Normal Close

22Opto-isolated sensor input 3(+)

23Opto-isolated sensor input 3(-)

24Opto-isolated sensor input 4(+)

25Opto-isolated sensor input 4(-)

26RS485 B

Max. 50mA, 12V DC

Ground

Max. 50mA, 12V DC

Ground

D+, non-inverting

Min. 1.5A, 12~15V AC or DC Min. 1.5A, 12~15V AC or DC Max. 1A, 24V DC or 0.5A, 125V AC Short with NC at initial state Max. 1A, 24V DC or 0.5A, 125V AC Max. 1A, 24V DC or 0.5A, 125V AC Short with NC at initial state Max. 1A, 24V DC or 0.5A, 125V AC Max. 50mA, 12V DC

Ground

Max. 50mA, 12V DC

Ground

D-, inverting

Power source

Pair of pin 14, 15 of AC or DC input is a replacement with the power adapter in case the range cannot meet the requirement. The voltage of the power source can be AC or DC and should fall in the range between 12V and 15V. Polarity does not matter. The DC output through Pin 1, 2 is fed from power adapter of Video Server or pin 14 and pin 15 if an external power source is attached. The current of external devices is limited to less than 500mA.

The power adapter of Video Server and the external power supply are prohibited to

exist together. Only one source can feed power to Video Server. Improper usage will result in serious damage.

RS485 interface

The PTZ control commands can be directed through pin 13 and pin 26 to control the PTZ cameras. If the distance from the controlled device is too far to allow accurate function, an external power source may be used to amplify the RS485 signal.

Digital I/O control

Video Server provides four pairs of digital inputs and four sets of relay switches. Pin 9 to

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