For maximum versatility without opening the PC/104 stack, each port is software configurable for full-duplex (4-Wire) RS-422 or RS-485. Half duplex (2-Wire) RS-485 mode is also supported. The 'auto-enable' circuit automatically handles the RS-485 driver, which eliminates the risk of bus contention and data corruption. With the driver controlled in hardware, the RS-485 ports are treated as standard serial COM ports by the operating system. Jumpers on the board allow you to suppress ECHO on a per-port basis.
The 3547 includes an Oxford 16954 UART with 128-byte transmit and receive FIFOs for fast, error-free communications up to 921.6K bps. The UART includes support for 9-bit protocol and the clock prescaler, coupled with a 14.7456 oscillator, provides the highest resolution for achieving all standard and many non-standard baud rates.
Sealevel's SeaCOM software drivers and utilities make installation and operation easy using Windows 98SE, ME, NT, 2000, XP and Vista operating systems. Standard operating temperature range is 0°C – 70°C, and an extended temperature range version offering -40°C – +85°C is also available. Sealevel Systems provides I/O solutions for connectivity technology. Sealevel's commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured I/O products.
