4. REMOTE OPERATION
Page 89
© 2005-2007 DH Instruments, a Fluke Company
Remarks
The RPM4-AD AutoZ function can be turned ON and OFF. There is a separate AutoZ flag for
the gauge, absolute, and differential measurement modes for each Q-RPT. This command
sets the AutoZ status for the current mode of the specified or the active Q-RPT only. To set
the state of AutoZ for a measurement mode, you must be in that mode.
Example
(enhanced)
Cmd sent:
Query reply:
“AUTOZERO 0”
“0”
(No reply if GPIB-488)
Example
(classic)
Sent:
Query reply:
“AUTOZERO=0”
“AUTOZERO=0”
Errors ERR#
7:
ERR# 10:
The argument was other than ‘0’ or ‘1’.
The suffix is invalid.
See Also
“ZOFFSET”, “MMODE”
3.5.1
AUTOZERO
n
=RUN
Purpose
Run the AutoZero routine.
Command
Query
“AUTOZERO
n
RUN (,
Pref
)”
“AUTOZERO
n
? RUN (,
Pref
)”
Classic “AUTOZERO
n
= RUN (,
Pref
)”
Optional Suffix
“n”
The active Q-RPT is assumed if no suffix is given.
‘1’ Specify the Hi Q-RPT
Specify the HL Q-RPT
‘2’ Specify the Lo Q-RPT
‘3’ Specify the HL Q-RPT if the HL Q-RPT is active
Arguments
‘Pref’
:
The AutoZ reference pressure in Pa. Optional when the RPM4-AD is not in
absolute measurement mode, as the reference is usually “0”.
Remarks
The RPM4-AD AutoZ function can be remotely run with this command only if AutoZero is
ON. You should ensure that the pressure is stable for valid determination of Z
offset
. If in
differential mode, the autozero function can take up to 10 seconds to complete. You cannot
autozero while in an airspeed or altitude unit.
Running AutoZ in differential measurement mode may take up to 10 seconds.
Example
(enhanced)
Cmd sent:
Query reply:
“AUTOZERO RUN”
“OK”
(No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“AUTOZERO? RUN, 97283”
(abs AutoZero to 97283 Paa)
“OK”
Example
(classic)
Sent:
Query reply:
“AUTOZERO=RUN”
“OK”
Errors ERR#
6:
ERR# 10:
ERR# 53
An argument was not given for the AutoZ reference in absolute mode.
Invalid suffix
AutoZero is currently OFF or in airspeed or altitude unit.
See Also
“ZOFFSET”, “MMODE”, “AUTOZERO”, “UNIT”
3.5.1
CALAMB
Purpose
Read or set the on-board barometer calibration.
Command
Query
“CALAMB
adder, mult, CalDate
”
“CALAMB?”
Classic “CALAMB
=adder, mult, CalDate
”
“CALAMB”
Defaults “CALAMB
= 0.0, 1.0, 19800101”
Arguments
Adder:
The Barometer calibration adder (PA), in Pascal.
Mult:
The Barometer calibration multiplier (PM) from 0.1 to 100.
CalDate:
The date of the calibration in the format “YYYYMMDD”
Remarks
The barometer calibration information can be accessed with this program message. Using this
program message overwrites the current calibration coefficients, so caution must be used.
Changes made take effect immediately.
Example
(enhanced)
Cmd sent:
Query reply:
“CALAMB? 2.1, 1.000021, 20011201”
“ 2.10, 1.000021, 20011201”
Example
(classic)
Sent:
Reply:
“CALAMB=2.1, 1.000021, 20011201”
“ 2.10, 1.000021, 20011201”
Errors
ERR# 6:
One of the arguments is out of range.
See Also
3.5.7.1, 5.3
