Glossary
DAQMeter DAQCard-4050 User Manual
G-4
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National Instruments Corporation
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 manually using switches
located on the device.
device
a plug-in data acquisition board, card, or pad that can contain multiple
channels and conversion devices. Plug-in boards, PCMCIA cards, and
devices such as the DAQPad-1200, which connects to your computer
parallel port, are all examples of DAQ devices. SCXI modules are
distinct from devices, with the exception of the SCXI-1200, which is a
hybrid.
differential input
an analog input consisting of two terminals, both of which are isolated
from computer ground, whose difference is measured
DMM
digital multimeter
DNL
differential nonlinearity—a measure in LSB of the worst-case deviation
of code widths from their ideal value of 1 LSB
double insulated
a device that contains the necessary insulating structures to provide
electric shock protection without the requirement of a safety ground
connection
DOS
disk operating system
drivers
software that controls a specific hardware device such as a DAQ board
or a GPIB interface board
E
EEPROM
electrically erasable programmable read-only memory–ROM that can
be erased with an electrical signal and reprogrammed
EISA
extended industry standard architecture
