National Instruments VXI-AO-48XDC, Руководство пользователя, Страница: 45 / 58

Glossary
© National Instruments Corporation G-3 VXI-AO-48XDC User Manual
C
C Celsius
channel Pin or wire lead to which you apply or from which you read the analog or
digital signal. Analog signals can be single-ended or differential. For digital
signals, you group channels to form ports. Ports usually consist of either
four or eight digital channels.
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.
D
D/A digital-to-analog
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.
default setting A default parameter value recorded in the driver. In many cases, the default
input of a control is a certain value (often 0) that means use the current
default setting. For example, the default input for a parameter may be
do
not change current setting , and the default setting may be no AMUX-64T
boards . If you do change the value of such a parameter, the new value
becomes the new setting. You can set default settings for some parameters
in the configuration utility or by manually using switches located on the
device.