PCI-1254U
PCI-1254U is a general-purpose communication card, intended for PCI (3.3V or 5V) or PCI-X bus. The card provides four isolated ports (three RS-232 and one RS-422/485).
The PCI-1254U card is based on the Oxford Semiconductor controller OXmPCI954 that provides PCI bus interface, four efficient UARTs (16C950 standard) and parallel interface in one circuit.
The first two ports at the PCI-1254U card lead to the D-Sub 9 connectors located on the card mounting bracket, the other two ports are accessible via the expansion card PCI-1026, fitted with the interface circuits located in the next slot. The RS-232 ports provide full modem control signals and standard pin layout.
Ports provide the optical isolation. Optional surge arresters (ESD-X4) can be added to protect isolation barrier against breakdown caused by induced overvoltage.
For more information see safety guidelines for preventing overvoltage damage.
Like any other TEDIA products, the RS-422/485 output circuits provide surge protection (TVS diodes) and termination impedances with fail-safe bias resistors, as advised by many standards (e.g. Profibus).
Useful feature are LED indicators on the card mounting bracket (a pair for every port) providing a comfortable check of the line activity.
Delivery details
The product packet includes the PCI card and expansion card, all documentation and software are available in the Download section.
Specifications
| Type | PCI-1254U |
|---|---|
| Number of ports | 4 |
| Ports type | 3x RS-232 + 1x RS-422/485 |
| Communication controller | OXmPCI954 (Oxford Semiconductor) |
| Transfer rate | up to 230.4kBd up to 921.6kBd |
| Supported signals | RS-232: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI RS-422: TXD+ (B), TXD- (A), RXD+ (B), RXD- (A) RS-485: TXD/RXD+ (B), TXD/RXD- (A) |
| Transceiver type | HIN211E (Texas Instruments, RS-232) SN75176 (Texas Instruments, RS-422/485) |
| RS-232 flow control | XON/XOFF, DTR/DSR, RTS/CTS |
| RS-422/485 operating modes | RS-422, RS-422 multimaster, RS-485 |
| RS-422/485 flow control | automatic (ADFC), DTR |
| RS-232 ESD surge protection | 15kV IEC 61000-4-2, air-gap |
| RS-422/485 ESD surge protection |
300A, 8/20 µs, IEC 801-5 (TVS diodes 5V8/600W) |
| Isolation voltage | 1kVDC (600VDC when ESD-X4 used) |
| Isolation protection | Surge arrester CG5-600L (ESD-X4 option) |
| RS-422/485 termination impedance |
120Ω/0.7V |
| Bus type | PCI, 3V3/5V, 32-bit, 33MHz (64-bit PCI and PCI-X compatible) |
| I/O and MEM address, Interrupt channels |
assigned by PnP PCI BIOS |
| Dimensions | approx. 90x125 mm (PCI-1254U) approx. 80x65 mm (PCI-1026) |
| Weight (expansion card included) |
approx. 160 g |
| Weight and dimensions of product packaging |
approx. 220 g cardboard box approx. 180x130x40 mm |