12. RS-232 & RS-485 Protocol
IMPORTANT: This section is designed to allow users to control the DVR via the RS -232 and RS-485 ports. The following information is intended to be used by qualified professionals. Do not make any changes to your system’s settings unless instructed by a qualified technician.
12.1Setup
12.1.1Use a Null Modem cable (the standard RS-232 9 Pin Cable with Pin 2 and Pin 3 exchanged, see pin configuration chart below for details) to connect the COM 1 on the rear panel of the DVR to a PC.
12.1.2Set the RS-232option to ON in the COMMUNICATION page of the setup menu.
12.1.3Set the PC communication parameters:9600 bps, No Parity, 8 Data Bits, 1 Stop Bit.
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