Glossary
VXI-MIO Series User Manual
G-4
National Instruments Corporation
command
Any communication, from a Commander to a Message-Based-
Servant, that consists of a write to the Servants Data Low register,
possibly preceded by a write to the Data High or Data High and
Data Extended registers.
commander
A message-based device that is also a bus master and can control
one or more servants.
component software
An application that contains one or more component objects that
can freely interact with other component software. Examples
include OLE-enabled applications such as Microsoft Visual Basic
and OLE Controls for virtual instrumentation in
ComponentWorks.
Configuration Registers
(1) A set of registers through which the system can identify a
module device type, model, manufacturer, address space, and
memory requirements. In order to support automatic system and
memory configuration, the VXIbus specification requires that all
VXIbus devices have a set of such registers. (2) The A16 registers
of a device that are required for the system configuration process.
CONVERT*
convert signal
counter/timer
A circuit that counts external pulses or clock pulses (timing).
crosstalk
An unwanted signal on one channel due to an input on a different
channel.
D
D/A
digital-to-analog
DAC
D/A converter
DAC0OUT
analog channel 0 output signal
DAC1OUT
analog channel 1 output signal
DAQ
data acquisition—(1) Collecting and measuring electrical signals
from sensors, transducers, and test probes or fixtures and
inputting them to a computer for processing; (2) Collecting and
measuring the same kinds of electrical signals with A/D and/or
DIO boards plugged into a computer, and possibly generating
control signals with D/A and/or DIO boards in the same computer.
DC
direct current
