M2x2/EN M/F User Manual
Page 18
iSTAT M2x2
TABLE 9-2 : GLOSSARY
Term Explanation
RMS Root Mean Square value
Flash
Type of a memory module that keeps its content in case
of power supply failure
MODBUS Industrial protocol for data transmission
QDSP Software for iSTAT family
AC Alternating voltage
PA Power angle (angle between current and voltage)
PF Power factor
THD Total harmonic distortion
MD Measurement of average values in time interval
Harmonic voltage −
harmonic
Sine voltage with frequency equal to integer multiple of
basic frequency
Hand-over place Connection spot of consumer installation in public network
Sample factor (M
v
)
Defines a number of periods for measuring calculation on
the basis of measured frequency
Averaging interval (M
p
)
Defines frequency of refreshing displayed measurements
on the basis of a Sample factor
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