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Diamond Systems DS-MPE-SER4OPT : DS-MPE-OPT4485

Rugged 4-Port Opto-Isolated RS-485 Serial mPCIe Card


Things Embedded are an official Diamond Systems USA distributor and can supply the DS-MPE-SER4OPT.


Serial I/O


Diamond Systems


The DS-MPE-SER4OPT from Diamond Systems is a rugged, low cost 4-port opto-isolated PCIe MiniCard serial module that is ideal for serial I/O expansion in embedded and OEM applications where opto-isolation is needed for safety or for ground loop prevention.

The Diamond Systems DS-MPE-OPT4485 offers 4 RS-232/RS-485 opto-isolated serial ports in a PCIe MiniCard form factor. Each port offers 16C550 compatibility and ultra-deep 256-byte TX/RX FIFOs. Maximum data rates are 1Mbps in RS-232 mode and 10Mbps in RS-485 mode. The board is available preconfigured for 4 RS-232 ports, 4 RS-485 ports, or a combination of 2 RS-232 and 2 RS-485 ports. I/O signals are provided on two miniature latching connectors, with 2 ports per connector.

Each pair of serial ports on the DS-MPE-OPT4485 from Diamond Systems offers up to 500V isolation from the system ground. Optoisolation increases reliability in applications with long cable runs, where a difference in ground potential can cause significant ground loop currents, damaging non-isolated boards and equipment. Isolation on this miniature board is achieved through a combination of highly integrated isolated power + 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.

Diamond Systems’ DS-MPE-OPT4485 is designed for rugged environments with latching connectors and extended temperature capability (-40°C to +85°C). In addition, the board may be custom-configured with 0-ohm resistors in place of jumper blocks for increased ruggedness in high-vibration environments.

The DS-MPE-OPT4485 product comes with the 4-port PCIe MiniCard opto-isolated serial module, the CK-SER4M cable kit, and a hardware kit with jumpers and screws.


Brand & Model Diamond Systems DS-MPE-SER4OPT : DS-MPE-OPT4485
Rugged 4-Port Opto-Isolated RS-485 Serial mPCIe Card
Features Compact
Number of serial ports 4
Protocols RS-232/485 on each port, configured in pairs
Maximum baud rate RS-232: 1Mbps
RS-485: 10Mbps
Termination RS-485 jumper selectable
UARTs Quad XR17V354 with PCIe interface
FIFO 256-byte TX/RX
Transceiver SP336 multi-mode
Isolation +/-500V input/output
Input power +3.3VDC +/-5%
Power consumption 0.462W @ 3.3V
Software drivers Windows 7, XP, Vista, 2000
Linux 2.6.16, 2.6.27, 2.6.31, 2.6.32
Form Factor PCIe MiniCard full size
Dimensions 50.95 x 30mm (2 x 1.18″)
Operating temperature -40ºC to +85ºC
Operating humidity 5% to 95% noncondensing
MTBF tbd
Weight 8.5g (0.3oz)
RoHS Compliant

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