The Model 9POP4 isolates and protects RS-232 equipment from lightning surges, accidental high voltage shorts, and
ground loops. RS-232 data signals TD, RD, RTS and CTS are supported at up to 115.2 kbps. The 9POP4 provides
2500 Volts RMS of isolation between sides.
The two sides of the isolator are powered from a single +12VDC power supply and maintain isolation. This powering
configuration allows the device to be run in any system with only a single supply, regardless of the power levels on the
RS-232 ports. Connections to the DTE device are made through a DB.9 female connector. Connections to the DCE
device are made through a DB9 male connector. 9POP4 pinouts are.