
APPENDIX #4 -
RS232 Remote Protocol
The RS232 / Alarm input allows you to control the DVR system from your PC. In order to achieve this, you will require an RS232 COM
Port communication program installed on your PC. There are many of these software programs available on the internet, some of which
are free. Please contact the manufacturer SVC if you require this software, or visit www.strategicvista.com for more information.
Use an RS-232C cable to connect the DVR Combo to your computer.
The remote connection on the DVR uses 8 data bits, 1 start bit, and 1 stop bit. Below is an example of the data stream with the control
codes shown.
ACT – OxFF
OxCO
ID
CODE
STOP – Ox7F
The PC keyboard simulates the DVR keypad. For example, pressing “r” will make the DVR stop.
Note that the letters are case sensitive. Below is a list of corresponding keys, and their codes:
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