Digital Video Recorder User Manual 
 
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Figure 9-7 UDP Connection Settings 
  USB->RS-232 Connection 
Configure the port parameters of USB-to-RS-232 convertor, including the serial number of 
port, baud rate, data bit, stop bit, parity and flow ctrl.   
   
When using USB->RS-232 convertor mode, the port of USB-to-RS-232 convertor and the POS must 
be corresponding to each other, e.g., POS1 must be connected to port1 of the convertor. 
 
Figure 9-8 USB-to-RS-232 Settings 
  RS-232 Connection 
Connect the DVR and the POS machine via RS-232. The RS-232 settings can be configured 
in Menu>Configuration>RS-232. The Usage must be set to Transparent Channel.   
 
Figure 9-9 RS-232 Settings 
  Multicast Connection 
When connecting the DVR and the POS machine via Multicast protocol, set the multicast 
address and port.