I-View Digi-4800XP 16 channels Hybrid Embedded DVR - Manual (Page 16)

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Digi-3248Pro/3248Pro-A Back Panel Description:
1.
Power plug: Plug power cable.
2.
Power switch: Turn on/off power supply.
3.
RS-485 Port: The communication port to control the Speed Dome and P/T/Z camera.
4.
Series port: Connect to RS-232 device such as Modem.
5.
Printer port: Connect to the printer.
6.
Panic button port: Connect to push button for emergency call. (Dry contact input only)
7.
USB port: Connect to USB device, such as USB external storage device.
8.
LAN port: For TCP/IP connection.
9.
Audio plug: Including Microphone in / Speaker out /Line in..
10.
VGA port: The first Monitor VGA port.
11.
DVI port: The second monitor connection port.
12.
Single video output: The1-16 single video output.
13. Video input: The 16 (17-32) video input.
14. Video loop output: The optional 16 (1-16) cameras video loop output.
15. Video loop output: The optional 16 (17-32) cameras video loop output.
16. Video input: The 16 (1-16) video input.
17. Sensor input: 16 sensors input. (For Dry contact input only).
18. Main Monitor 0 output: Display 1-16 spilt video on TV.