The Sealevel Systems ULTRA SIO provides the PC with two Isolated RS-422/485 Asynchronous links to data collection and other devices. Isolation is important in installations where the equipment connected to the PC is either located far from the host system, or on a different power transformer circuit. The optical isolation feature of the ULTRA SIO eliminates the risk of Ground Loop Current, a commonly neglected and misunderstood phenomenon which leads to data errors and the destruction of communications equipment. Individually selectable addresses and extended “AT” interrupts allow for seamless integration into Windows and OS/2 systems. The ULTRA SIO appears to the host system as a standard COM:port requiring no special drivers or additional software. We include our Advanced COM drivers for Windows 95/98/ME/NT/2000 and XP providing IRQ sharing, Windows serial diagnostics, and other enhanced features. Our Linux and QNX utilities are also included to simplify installation.

2 PORT ISA RS-422/485 Iso Back to 2 Port

View The 3089 User Manual (PDF) Download The Serial Utility Disk

• Dual port isolated RS-422/485 Interface
• True isolation between ports providing 500V DC isolation
• Automatic control of RS-485 driver enable (no special software required)
• Selectable COM: port address
• Selectable and sharable IRQ (2-7,10-12, 14 and 15)
• Compatible with existing communication drivers
• 16-bit addressing eliminates I/O conflicts
• 16550 buffered UART standard
• Full array of enhanced UART options
• Selectable termination, echo mode, two/four wire operation
• DB-9P connectors providing TD, RD, RTS and CTS
• Includes Windows Advanced COM: drivers, utilities, INF files and help files to simplify installation