IC Realtime Professional 3-D DVR/PTZ Keyboard with Network Capability User Manual
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Connect switch 25-pin box RS232 port with DVR RS232 port. (25-pin outlet supports maximum
twelve RS232 ports. Switch is just for sending not for receiving. So you can use two cables: GND
and TXD)
Please refer to the following sheet if you are connecting 485 switch box to DVR See Figure 8-3.
RS485switch box 25-pin port RS232 port
（DB25） （DB9）
Figure 8-3
Note:
you can use standard RS232 port to connect keyboard with DVR.
Note:
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This manual is for reference only. Slight difference may be found in the user interface.
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All the designs and software here are subject to change without prior written notice.
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If there is any uncertainty or controversy, please refer to the final explanation of us.
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Please visit our website for more information.