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Glossary
© National Instruments Corporation
G-3
E
efficiency
Ratio of output power to input power, expressed as a percentage.
EIA
Electronic Industries Association.
Embedded system 
controller
A module configured for installation in slot 1 of a PXI chassis. This device 
is unique in the PXI system in that it performs the system controller 
functions, including clock sourcing and arbitration for data transfers across 
the backplane. Installing such a device into any other slot can damage the 
device, the PXI backplane, or both.
EMC
Electromagnetic Compatibility.
EMI
Electromagnetic Interference.
F
FCC
Federal Communications Commission.
filler panel
A blank module front panel used to fill empty slots in the chassis.
G
g
(1) grams; (2) a measure of acceleration approximately 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
hr
Hours.
Hz
Hertz; cycles per second.