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mPCIe 4-port Isolated RS-485 serial
The mPCIe-ICM485 family of cards feature high performance 16C950-class UARTs. Available in 4-port (mPCIe-ICM485-4), 2-port (mPCIe-ICM485-2) and 1-port (mPCIe-ICM485-1) versions, each port is capable of communication speeds as high as 3Mbps and has 128-byte deep transmit and receive FIFOs. Large FIFOs protect against data loss in multitasking operating systems, reduce CPU utilization, and improve data throughput, while reducing or eliminating inter-character or inter-packet pauses. The advanced integrated circuit with pre-scalar supports a wide variety of custom baud rates, and any rates not otherwise achievable can be supported via a custom factory-installed crystal oscillator (up to 12Mbps!).
Tru-Iso™ port-to-port and port-to-PC isolation provides a robust solution to common signal level and grounding issues when using long cables to connect computers and other powered devices – up to 500V of difference between pins and adjacent ports and 1500V between each port and the host computer.
Communication is possible either with custom application software, with off-the-shelf applications (such as HyperTerminal), or with provided samples and utilities, including WinRISC™ (“Windows Really Incredibly Simple Communication).
The serial ports on the device are accessed using a low-profile, latching, 5-pin Hirose connector. Optional breakout cables are available, and bring each port connection to a panel-mountable DB9-M connector.
Number of serial ports | 4, 2 or 1 port |
Protocols | RS-485 |
Maximum baud rate | Up to 3M baud Advanced-prescaler allows a wide variety of unusual baud rates to be achieved Up to 12Mbps via custom crystal option |
UARTs | Quad 16C950 |
FIFO | 128-byte FIFO for each transmit & receive buffer |
Isolation | Port-to-PC: 1500V peak (AC or DC) Port-to-port: 500V peak (AC or DC) |
Power required | +3.3VDC @ 1.6W (typical) |
Form Factor | PCIe MiniCard full size |
Dimensions | 50.95 x 30mm |
Operating temperature | -40ºC to +85ºC |
Operating humidity | 5% to 95% noncondensing |
ESD Protection | ±15kV on all signal pins (IEC 61000) |
Weight | 6.4g |
Model | Description |
mPCIe-ICM485-4 | mPCIe 4-port Isolated RS-485 serial |
mPCIe-ICM485-2 | mPCIe 2-port Isolated RS-485 serial |
mPCIe-ICM485-1 | mPCIe 1-port Isolated RS-485 serial |
Model | Description |
CAB-mPCIe-ICM4S | Four port DB9 male cable accessory kit |
CAB-mPCIe-ICM4S-IP67 | Four port DB9 IP67 male cable accessory kit |
CAB-mPCIe-ICM2S | Two port DB9 male cable accessory kit |
CAB-mPCIe-ICM2S-IP67 | Two port DB9 IP67 male cable accessory kit |
CAB-mPCIe-ICM1S | One port DB9 male cable accessory kit |
CAB-mPCIe-ICM1S-IP67 | One port DB9 IP67 male cable accessory kit |
ADAP9 | Screw terminal adapter (single DB9 female to 9 screw terminals) |
mPCIe-HDW-KIT2 | 2mm mounting hardware kit |
mPCIe-HDW-KIT2.5 | 2.5mm mounting hardware kit |