4. REMOTE OPERATION
Page 77
© 2008 DH Instruments, a Fluke Company
ATM
Purpose
Reads the next measured pressure from RPM4-E-DWT’s on-board barometer (if
present).
Query
Classic
“ATM?”
“ATM”
Remarks
The atmospheric pressure as measured by the RPM4-E-DWT on-board barometer is
returned in the current pressure units of the active Q-RPT (always absolute). This
measurement is followed by the units text. Not all RPM4-E-DWTs are equipped with an
on-board barometer.
Example
(enhanced)
Query sent:
Query reply:
“ATM?”
“97.12348 kPa a”
Example
(classic)
Sent:
Reply:
“ATM”
“97.12384 kPa a”
Errors
ERR# 23:
RPM4-E-DWT is not equipped with a barometer.
See Also
3.9.7.1
AUTOZEROn
Purpose
Read or set the status of the AutoZ function.
Command
Query
“AUTOZERO
n
state
”
“AUTOZERO
n
?”
Classic “AUTOZERO
n
=
state
”
“AUTOZERO
n
”
Default “AUTOZERO1”
Optional Suffix
“n”
A suffix may be used instead of “
RptLabel
”
‘1’ Specify the Hi Q-RPT
‘2’ Specify the Lo Q-RPT
Arguments
‘state’
:
’0’ Autozero OFF
’1’ Autozero ON
Remarks
The RPM4-E-DWT AutoZ function can be turned ON and OFF.
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”
3.9.1
AUTOZEROn=RUN
Purpose
Run the AutoZero routine.
Command
Query
“AUTOZERO
n
RUN (,
Pref
)”
“AUTOZERO
n
? RUN (,
Pref
)”
Classic “AUTOZERO
n
= RUN (,
Pref
)”
Optional Suffix
“n”
A suffix may be used instead of “
RptLabel
”
‘1’ Specify the Hi Q-RPT
‘2’ Specify the Lo Q-RPT
Arguments
‘Pref’
:
The AutoZ reference pressure in Pa. Optional when the RPM4-E-DWT is not in
absolute measurement mode, as the reference is usually “0”.
Remarks
The RPM4-E-DWT 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
.
Example
(enhanced)
Cmd sent:
Query reply:
“AUTOZERO RUN”
“OK”
(No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“AUTOZERO? RUN, 0”
“OK”
Example
(classic)
Sent:
Query reply:
“AUTOZERO=RUN”
“OK”
Errors ERR#
10:
ERR# 53
Invalid suffix
AutoZero is currently OFF.
See Also
“ZOFFSET”, “AUTOZERO”
3.9.1, 3.7.10
