For installations needing longer runs you may also use an RS-422 configuration, which extends the maximum length to 1,200 meters (4,000 feet). Note, not all Sony VISCA cameras support RS-422 communication. When using an RS-422 connection, there are 3 configuration options, and depending on installation needs, you may connect cameras in a daisy chain, star or star/daisy chain combination.
The single camera configuration option # 811 includes a DB 9-pin RS-232 to screw terminal RS-422 converter, which plugs into the workstation in either COM 1 or COM 2. From the screw terminal you may connect your first camera using the 9-pin connector plug provided with the camera. From the same connector you may loop communication to the rest of your cameras.