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PC/104 4-port RS-232/422/485 with 1kV isolation + 24 DIO
EMM-OPT4 provides an integrated, rugged, and reliable solution for PC/104-expandable embedded systems requiring serial communications in demanding applications. It offers 4 optically isolated RS-232/422/485 serial ports as well as 24 digital I/O lines, all on a single board.
Optical isolation of 1kV DC or AC protects your embedded system from ground differentials or noise spikes that would damage non-isolated boards. Each port is isolated from the other ports as well as the system. Extended temperature capability (-40 to +85ºC) enables the board to operate in vehicles such as trains and buses without concern for temperature swings.
The 24 digital I/O lines are based on an 82C55 chip and feature programmable direction in 4- and 8-bit groups. All I/O lines contain user-configurable 10K Ohm pull-up resistors for convenience.
|Number of serial ports||4-ports|
|Protocol||RS-232, RS-422, RS-485 (jumper selected)|
|Optical Isolation||1kV AC or DC, port to port or port to system|
|Control Signals||RS-232: TxD, RxD, RTS, CTS
RS-422/485: TxD±. RxD±
|Maximum baud rate||Up to 460.8Kbps|
|I/O Addresses||Jumper selectable I/O addresses|
|Interrupts||Jumper selectable IRQ|
|Number of DIO||24 programmable|
|DIO Input Voltage||Low -0.5V min, 0.8V max.
High 2.0V min, 5.5V max.
|DIO Output Voltage||Low 0.0V min, 0.4V max.
High 3.0V min, Vcc – 0.4V max.
|Output Current||±2.5mA max, each line|
|Dimensions||90 x 96 mm|
|Power supply||+5VDC ±5% @ 80mA max.|
|Operating Temperature||-40 to +85°C|
|EMM-OPT4-XT||PC/104 4-port RS-232/422/485 with 1kV isolation + 24 DIO|