HIKVISION DS-7700NXI-I/S Series User Manual page 137

 RS-232 Connection
Connect the device 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.
 Multicast Connection
When connecting the device and the POS machine via Multicast protocol, set the multicast
address and port.
 Sniff Connection
Connect the device and the POS machine via Sniff. Configure the source address and
destination address settings.
Network Video Recorder User Manual
Figure 15-5 USB-to-RS-232 Settings
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