Glossary
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National Instruments Corporation
G-5
VXI-1394 Interface for Windows NT/98
EMI
electromagnetic interference
external trigger
A voltage pulse from an external source that triggers an event.
F
fair requester
A VXIbus device that will not arbitrate for the VXIbus after releasing
it until it detects the bus request signal inactive. This ensures that all
requesting devices will be granted use of the bus.
FireWire
An Apple trademark for the technology that came to be defined as
IEEE 1394. See IEEE 1394.
G
g
(1) grams
(2) a measure of acceleration equal to 9.8 m/s
2
GPIB
General Purpose Interface Bus (IEEE 488)
g
RMS
A measure of random vibration. The root mean square of acceleration
levels in a random vibration test profile.
H
hex
Hexadecimal—the numbering system with base 16, using the digits 0 to 9
and letters A to F.
hot plug-in capability
The ability, a feature in IEEE 1394, to add and remove devices to a
computer while the computer is running and have the operating system
automatically recognize the change.
Hz
hertz; cycles per second
I
IDE
Integrated Drive Electronics. Denotes the most common interface to the
hard drive on PCs.
