Extron Electronics CrossPoint 300 Series - Manual (Page 23)

2-9 CrossPoint 300 Matrix Switchers • Installation
This port is RS-232 only, with its default protocols as follows:
• 9600 baud • no parity • 8 data bits
• 1 stop bit • no flow control
The maximum distances from the matrix switcher to the controlling device can
vary up to 200 feet (61 m). Factors such as cable gauge, baud rates,
environment, and output levels (from the switcher and the controlling device)
all affect transmission distance. Distances of about 50 feet (15 m) are typically
not a problem. In some cases the matrix switcher may be capable of serial
communications via RS-232 up to 250 feet (76 m) away.