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Frequently Asked Questions
Question 11: Can I use converters to extend the RS-232 data line distance?
Answer: Yes, the RS-232 data line has a distance limitation of fifty (50) feet (about 15 m), while the RS-485/RS-422 can go up to 4000 feet (1200 m). It is a common practice to use the converters to extend the RS-232 data line.
To protect your RS-232 devices from surge voltages while extending the RS-232 distance, we would recommend the RPT-232-3 - an optically isolated RS-232 data repeater (extender) (TX, RX, and GND), which works in pairs to extend the full-duplex RS-232 distance up to 1.8 miles (3 km) @ 300bps baud or 1600 feet (500m) @ 28.8kbps baud. This product features opto-isolation circuitry, which effectively protect your RS-232 devices from transient surges, ground loop, and remote lightning.
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