Specifications

2 PCL-741 User's Manual
Description
The PCL-741 card provides two isolated RS-232 or current-loop
serial ports for communication applications in difficult environ-
ments. You can configure each port individually to RS-232 or 4-20
mA current-loop using on-board jumpers.
The card has two 16C550 UARTs (on-chip 16-byte FIFO buffers)
making serial I/O more reliable. By buffering data into 16-byte
packets before putting it on the bus the UARTs drastically reduce the
CPU load. This makes the PCL-741 especially suitable for high
speed serial I/O applications and applications under MS Windows.
On-board optical isolators protect your PC and equipment against
damage from ground loops to increase system reliability in harsh
environments.