Serial based data acquisition is an alternative method of data
acquisition and control using a computer serial communications ports ( RS232, RS485,
USB ) as
opposed to PCI or other bus-based hardware. Data acquisition via RS232 or RS485
typically involves sending and receiving ASCII data via a com port to external measurement
and control hardware. USB data acquisition involves obtaining a handle to a
device and then sending/receiving commands by reading and writing to that
handle using API calls. There are several advantages and disadvantages to using serial data
acquisition ( ADR, ADU ) interfaces.
ADVANTAGESOF SERIAL DATA
Hardware located closer to point of control.
No slot required.
Platform independent ( MAC, PC, Laptop or Desktop)