National Instruments VXI-MIO Series User Manual page 136

Glossary
plug and play devices
port
ppm
pretriggering
Q
quantization error
R
RAM
referenced signal sources
relative accuracy
RESMAN
resolution
Resource Manager
responses
VXI-MIO Series User Manual
Devices that do not require dip switches or jumpers to configure
resources on the devices—also called switchless devices.
(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.
parts per million
The technique used on a DAQ board to keep a continuous buffer
filled with data, so that when the trigger conditions are met, the
sample includes the data leading up to the trigger condition.
The inherent uncertainty in digitizing an analog value due to the
finite resolution of the conversion process.
random access memory
Signal sources with voltage signals that are referenced to a system
ground, such as the earth or a building ground. Also called
grounded signal sources.
A measure in LSB of the accuracy of an ADC. It includes all non-
linearity and quantization errors. It does not include offset and
gain errors of the circuitry feeding the ADC.
The name of the National Instruments Resource Manager in
NI-VXI bus interface software. See Resource Manager.
The smallest signal increment that can be detected by a
measurement system. Resolution can be expressed in bits, in
proportions, or in percent of full scale. For example, a system has
12-bit resolution, one part in 4,096 resolution, and 0.0244 percent
of full scale.
A message-based Commander, located at logical address 0, which
provides configuration management services such as address map
configuration, Commander and Servant mappings, and self-test
and diagnostics management
Signals or interrupts generated by a device to notify another
device of an asynchronous event. Responses contain the
information in the Response register of a sender.
G-12 National Instruments Corporation