United Electronics Industries, Inc.
Tel: 781-821-2890
www.ueidaq.com
Fax: 781-821-2891
PowerDNA DIO-403 Layer
-13-
5 Glossary
A
API
Application Programming Interface, a collection of
high-level language function calls that provide
access the functions in a driver or other utility.
B
bit
One binary digit, either 0 or 1.
byte
Eight related bits of data, an 8-bit binary number.
Also used to denote the amount of memory required
to store one byte of data.
C
coupling
The manner in which a signal is connected from one
location to another.
crosstalk
An unwanted signal on one channel due to an input
on a different channel.
current drive capability
The amount of current a digital or analog output
channel can source or sink while still operating
within voltage range specifications.
current sourcing
The ability of a DAQ card to supply current for
analog or digital output signals.
I
input bias current
The current that flows into the inputs of a circuit.
input impedance
The measured resistance and impedance between
the input terminals of a circuit.
input offset current
The difference in the input bias currents of the two
inputs of an instrumentation amplifier.
