EMM-8EL-XT

PCI/104e 8-port RS-232/422/485 with 2500VRMS isolation, 8 DIO & 7 AIO

Description
Specifications
Ordering Guide
Optional Accessories

The EMM-8EL-XT is a PCIe/104 OneBank serial cards offering 4 or 8 serial ports with or without opto-isolation. The module is based on a high speed UART with 256-byte TX/RX FIFOs and auto RS-485 transmit control. The EMM-8EL-XT fits a wide variety of embedded serial I/O application needs. Each port is independently isolated with an ADUM5402 isolated power + signal chip plus additional isolators for control signals. All features are programmable, including protocol and RS-485 line termination. An onboard microcontroller interfaces to the GPIO pins on the UART and provides control of the configuration options. The microcontroller also manages staggered turn-on of the ADUM5402 devices to limit power-on inrush current. All configurations are stored in the microcontroller’s flash memory and are automatically reloaded on power-up. The board is in the PCI/104-Expressform factor with the PCIe/104 one bank bus connector for cost reduction.

Number of serial ports	8
Protocols	RS-232, RS-422, RS-485 configured with software, no jumpers
Maximum baud rate	RS-232 mode: 1Mbps RS-422/485 mode: 10Mbps
UART	16550 compatible octal UART with 256-byte TX/RX FIFOs
Transceivers	SP330 multiprotocol transceivers, one per port
Communications parameters	5, 6, 7, or 8 data bits; Even, odd, or no parity
Termination	Software programmable RS-422/485 termination
Isolation	Independent 2500VRMS isolation port-by-port
ESD protection	+/-15KV on each port
Short circuit protection	Continuous, all outputs
RS-232 mode
Input Impedance	3KΩ min
Input voltage swing	±30V maximum
Output voltage swing	±5V min, ±7V typical
RS-422/485 modes
Differential input threshold	-0.2V min, +0.2V max
Input impedance	12KΩ minimum
Input current	+1.0mA max (Vin = 12V) -0.8mA max (Vin = -7V)
Differential output voltage	2.0V min (RL=50Ω)
High/low states differential output voltage symmetry	0.2V max
Digital / Analog I/O
Number of DIO	8 individually programmable digital input or output
Number of AIO	7 12-bit analog input
Analog input ranges	0-2.048V or 0-3.3V
Host interface	PCIex1 using PCIe/104 OneBank connector
Inrush current	Staggered turn-on of isolated devices for reduced inrush current at power on
On-board microcontroller	On-board PIC microcontroller with flash to manage and store configurations
Connectors	Latching connectors on all ports for increased ruggedness
Current consumption	160mA typical, all outputs unloaded
Software drivers	Windows Embedded Standard 7, XP, 2000 and Vista Linux 2.6.16, 2.6.31 and 2.6.32
Shock / Vibration	MIL-STD-202G compatible
MTBF	579,352 hours at 20°C
Bus	PC/104
Dimensions	90 x 96 mm
Power supply	+5VDC ±5%
Operating Temperature	-40 to +85°C

Model	Description
EMM-8EL-XT	PCI/104e 8-port RS-232/422/485 with 2500VRMS isolation
EMM-8E-XT	PCI/104e 8-port RS-232/422/485 without isolation

Model	Description
CK-EMM-8EL	Cable Kit with 8 serial cables & 1 digital/analog cable