Fluke RPM4 manual Glossary, Dut, Hl Q-Rpt

9. GLOSSARY

9.GLOSSARY

Axxx	A type of Q-RPT with a built-in vacuum reference that is intrinsically absolute (e.g. A10M).
	Axxx Q-RPTs support absolute, gauge and negative gauge measurement modes.
Absolute Mode	Measurement mode in which the Q-RPT indicates absolute pressure (difference from vacuum).
Active Q-RPT	The Q-RPT that is currently selected to be displayed on the top line of the RPM4
	display. Most function selections affect the active Q-RPT.
AutoRange	A function that optimizes RPM4 measurement and control for a specific, user defined
	range of operation.
AutoRanged Range	An RPM4 pressure measurement range created using the AutoRange function.
AutoTest or ATest	RPM4 on-board automated testing sequences and their results.
AutoZero or AutoZ	A process by which a Q-RPT and measurement mode is rezeroed (offset) relative to a standard.
Barometer	RPM4’s on-board atmospheric pressure measuring sensor. Also referred to as on-board barometer.
	A type of Q-RPT that is intrinsically gauge and is capable of operating bi-directionally,
BGxxx	above and below atmosphere, through zero.	BGxxx Q-RPTs support gauge and
	negative gauge measurement modes.
Default Range (DF)	A Q-RPT’s maximum range that is always available using [RANGE] and cannot be deleted.
Deviation	A DISPLAY function in which the deviation of the current pressure from a target pressure
	is displayed.
DUT	Device Under Test. The device or devices pneumatically connected to the RPM4
	TEST(+) port that the RPM4 is being used to test or calibrate.
Differential mode	Measurement mode in which the measured pressure is the different between the Hi and
	Lo Q-RPT (Hi – Lo).
FS	Abbreviation of “full scale”. The full scale value is the maximum pressure of a measurement
	range. Limits and specifications are often expressed as % FS. Also see span.
Gxxx	A type of Q-RPT that is intrinsically gauge but only measures pressure greater than
	atmosphere. Gxxx Q-RPTs support gauge measurement mode only.
Gauge Mode	Measurement mode in which the Q-RPT indicates gauge pressure (difference from
	atmospheric pressure), but only in the positive direction (above atmosphere).
Head	A difference in height between the RPM4 reference level and the DUT.
HiLo	A DISPLAY function in which the highest and lowest pressure measurements since
	reset are recorded and displayed.
Hi Q-RPT	The designation of a single Q-RPT in an RPM4, or, if there are two, the one that has the
	highest full scale default range.
HL Q-RPT	The designation of the pseudo Q-RPT that results from the combination of using two
	Q-RPTs simultaneously in parallel measurement mode.
	In an RPM4 with two Q-RPTs, the Q-RPT that is not currently displayed on the top line
Inactive Q-RPT	of the display. The inactive Q-RPT may be displayed on the second line of the RPM4
	display using the RPT DISPLAY function.
Lo Q-RPT	The designation of a the Q-RPT with the lower full scale default range in RPM4s with
	two Q-RPTs.
Measurement Mode	Whether pressure is being measured relative to absolute zero or vacuum (absolute mode)
	or relative to atmospheric pressure (gauge mode).
Negative gauge or	Measurement mode in which the Q-RPT indicates gauge pressure (difference from
	atmospheric pressure), in both positive and	negative directions (above and below
compound gauge
	atmosphere).
	The difference between a Q-RPT reading and the AutoZero reference at the time AutoZ
Poffset	is run. Used by the AutoZ function when Auto Z is ON to compensate Q-RPT readings
	for changes in zero over time.
Pstd,0	AutoZero reference value. Value indicated by the device against which the Q-RPT is
	zeroed by AutoZ.
PA	Pressure adder, used to offset a Q-RPT or barometer to calibrate it.

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