![background image](http://html1.mh-extra.com/html/national-instruments/daqmeter-daqcard-4050/daqmeter-daqcard-4050_user-manual_3418465051.webp)
Glossary
DAQMeter DAQCard-4050 User Manual
G-8
©
National Instruments Corporation
P
PC Card
a credit-card-sized expansion card that fits in a PCMCIA slot often
referred to as a PCMCIA card
PCMCIA
an expansion bus architecture that has found widespread acceptance as
a de facto standard in notebook-size computers. It originated as a
specification for add-on memory cards written by the Personal
Computer Memory Card International Association.
peak value
the absolute maximum or minimum amplitude of a signal (AC + DC)
pk-to-pk
peak to peak value—the absolute maximum amplitude of a signal
subtracted from the absolute minimum value
Plug and Play devices
devices that do not require dip switches or jumpers to configure
resources on the devices—also called switchless devices
port
(1) a communications connection on a computer or a remote controller
(2) a digital port, consisting of four or eight lines of digital input and/or
output
ppm
parts per million
R
RAM
random-access memory
range error
an error in accuracy that is determined by the input range that is
selected. The range error is independent of the value of the signal being
measured.
reading error
an error in accuracy that is determined by the input range, as well as the
value being measured.
reading rate
the rate at which a new measurement is taken. In addition to the
measurement speed, the selection of the reading rate affects the
filtering, and thus the noise level, of measurements.
resolution
the smallest signal increment that can be detected by a measurement
system. Resolution can be expressed in bits or in digits. The number of
bits in a system is roughly equal to 3.3 times the number of digits.