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RS232-485 convertor may transform RS232 to 485 signal for CCTV system.
It's RS232 end insert |
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9 pin RS232 port of DVR and 485 signal of another end link to twisted
line. USB port of DVR supply |
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5V to converter. |
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Technique Parameter: |
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Power: 5V(from USB port) |
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Current: 5mA（normal） |
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Temperature: -10~ +70 |
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Load: 64 |
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Distance: Max 1200m |
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Control: A+/B-(twisted line) |
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0peration: |
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1. Turn off DVR. |
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2. Insert the converter to 9 Pin 232 port of DVR. |
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3. Signal Twisted line to remote equipment(A+.B-) link to A+ and B- end
of converter. |
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4. Insert USB head to USB slot of DVR for supply of converter. |
