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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 |