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产品详情：
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