产品介绍：通用PCI总线2路RS-485/RS-422通讯卡
特点：Built-in COM-Selector
Self-Tuner Inside
Up to 128 KB software FIFO for each COM port under Windows
Short Card Design
Supports 3.3 V/5 V PCI bus, Plug and Play
Provides 2-port RS-422/485
+/-4 kV ESD Protection
LED diagnostic indicators
[VXC-142iU only]
3 kV Isolated ports
规格：Communication Port

COM1 ~ COM2

RS-422/485

The RS-422 and RS-485 cannot be used simultaneously

RS-422

TxD+, TxD-, RxD-, RxD+, RTS+, RTS-, CTS+, CTS-, GND

RS-485

Data+, Data-, GND

UART

16C950 compatible

Baud Rate

50 ~ 115200 bps

Data bit

5, 6, 7, 8

Stop bit

1, 1.5, 2

Parity

None, Even, Odd, Mark, Space

FIFO

Internal 128 bytes

Isolation

3000 V

General

Bus Type

Universal PCI, 3.3 V and 5 V, 33 MHz, 32-bit, plug and play mechanism

COM-Selector

Yes (8-bit DIP switch)

Connector

2 x DB9 (Male)

Power Consumption

480 mA @ 5 V

Operating Temperature

0 °C ~ +60 °C

Storage Temperature

-20 ℃ ~ 70 ℃

Humidity

0 ~ 90% RH, non-condensing

Dimensions (L x W)

140 mm x 95 mm