RPM4-AD™ OPERATION AND MAINTENANCE MANUAL
© 2005-2007 DH Instruments, a Fluke Company
Page 96
PRR
Purpose
Read the next available
Ready
condition, pressure measurement, rate and on-board
barometer reading.
Query “PRR?”
Classic “PRR”
Optional Suffix
“n”
The active Q-RPT is assumed if no suffix is given.
‘1’ Specify the Hi Q-RPT if the HL RPT is not active
Specify the HL Q-RPT if the HL Q-RPT is active
‘2’ Specify the Lo Q-RPT
‘3’ Specify the HL Q-RPT if the HL Q-RPT is active
Remarks
The next available
Ready
condition, Q-RPT pressure measurement, rate of pressure change,
and barometric pressure is replied in the Q-RPT’s current pressure unit of measure. . This
can take up to the current read rate period (1.2 seconds by default). Each data field is
separated by a comma, and is returned in the following order:
ready, pressure UNITS, rate UNITS/s, atm UNITS
Here are the field descriptions:
ready:
Three character ready status field. Refer to the “SR” command.
pressure:
The measured pressure for the active Q-RPT in the current pressure unit.
This is followed by the current pressure unit.
rate:
The measured rate of pressure change for the active Q-RPT in the current
pressure unit per second. This is followed by the current pressure unit of measure.
atm:
The pressure measured by the RPM4-AD on-board barometer in the current
pressure unit (and always absolute). This is followed by the current active Q-
RPT’s pressure unit. If the current active Q-RPT pressure unit is an airspeed
unit, then the barometer will be indicated in “feet” Not all RPM4s are equipped
with an on-board barometer. This field is missing if the RPM4-AD is not
equipped with an on-board barometer.
Example
(enhanced)
Query sent:
Query reply:
“PRR?”
“R,2306.265 kPaa,0.011 kPa/s,97.000 kPa a”
“R,2306.265 kPaa,0.011 kPa/s”
(no barometer)
Example
(classic)
Query sent:
Reply:
“PRR”
“R,2306.265 kPaa,0.011 kPa/s,97.000 kPa a”
Errors ERR#
60:
ERR# 10:
The current Q-RPT unit of measure and measurement mode are not
compatible.
The suffix is invalid.
See Also
“PR”, “QPRR”, “SR”
3.1.1, 3.2.1, 3.5.7.1
