User Manual of DS-7200-ST Series DVR
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DS-7204HFI-ST:
Figure 31. DS-7204HFI-ST Rear Panel
BNC connectors for analog video input
BNC connector for video output.
RCA connectors for analog audio input
RCA connector for audio input
RCA connector for audio output
Connector for LAN (Local Area Network)
DB15 connector for VGA output. Display local video output and menu
Connector for USB devices
DB9 connector for RS232 devices
Connector for alarm input
Connector for alarm output
Connector for RS-485 devices. T+, T- pin connects to PTZ
Switch for turn on/off the device
Ground(needs to be connected when DVR starts up)