Low cost serial port module from Diamond Systems
Diamond Systems has introduced a low cost, multiprotocol opto-isolated serial port module in the popular PCIe MiniCard form factor.
Measuring just 30 x 51mm, the DS-MPE-SER4OPT offers four RS-232/RS-485 opto-isolated serial ports; each of which offers 16C550 compatibility and ultra deep 256byte TX/RX FIFOs.
Maximum data rates are 1Mb/s in RS-232 mode and 10Mb/s in RS-485 mode.
The board is available preconfigured for four RS-232 ports, four RS-485 ports, or a combination of two RS-232 and two RS-485 ports. I/O signals are provided on two miniature latching connectors, with two ports per connector.
Each pair of serial ports on the DS-MPE-SER4OPT offers up to 500V isolation from the system ground.
Isolation is achieved through a combination of isolated power and data components, careful component placement and layout, and a safety enhancing insulation film on the bottom side which prevents accidental contact with components on the carrier board.
