Filter
Top Products
RPM4/HPMS A70M/A20M-AF OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 90
RANGE
Purpose Change the active range to the default range of the Hi or Lo. Replies the active range full
scale, pressure unit and measurement mode.
Command
Query
“RANGE Rng”
“RANGE?”
Classic “RANGE= Rng”
“RANGE ”
Default “RANGE IH”
Rng:
“IH” for the Hi Q-RPT
“IL” for the Lo Q-RPT
Remarks The active Q-RPT must be selected before making changes to settings that are dependent on the
range. Q-RPTs selected with this command are used with their full default pressure range. The reply
indicates the active range in psi if the RPM4 is a “US” version or in kPa if the RPM4 is an “SI” version.
Used as a simple query, the active range is returned, which can be an AutoRanged range or a
default range (see “ARANGE” cmd).
Example
(enhanced)
Cmd sent:
Query reply:
“RANGE? IL” (select internal Lo Q-RPT in it’s full default range)
“2.2 psi g,IL”
Example
(classic)
Sent:
Reply:
“RANGE= IH” (select internal Hi Q-RPT in it’s full default range)
“1000 psi a, IH”
Example
(classic)
Sent:
Reply:
“RANGE” (request current range)
“220 psi a,IL”
Errors ERR# 6:
ERR# 29:
Invalid Rng argument.
The selected Q-RPT is not available.
See Also “ARANGE”, “RPT”
3.2.3, 3.3.1, 3.3.4
RATEn
Purpose Read the next available pressure rate of change.
Query “RATEn?”
Classic “RATEn”
Optional Suffix
“n”
The active Q-RPT is assumed if no suffix is given.
‘1’ Specify the Hi Q-RPT
‘2’ Specify the Lo Q-RPT
Remarks The next available pressure rate of change in the current pressure unit per second is returned.
After receiving this program message, the RPM4 replies back with the data once a new pressure
measurement cycle is complete. This can take up to the current read rate period (1.2 seconds
by default).
Example
(enhanced)
Query sent:
Query reply:
“RATE?”
“0.01 kPa/s”
Example
(classic)
Sent:
Reply:
“RATE2”
“0.03 kPa/s”
See Also “PRR”, “QPRR”.”READRATE”
3.3.6.2
READRATEn
Purpose Read or set the specified or active Q-RPT read rate or auto read rate mode.
Command
Query
“READRATEn period”
“READRATEn?”
Classic “READRATEn= period”
“READRATEn”
Optional Suffix
“n”
The active Q-RPT is assumed if no suffix is given.
‘1’ Specify the Hi Q-RPT
‘2’ Specify the Lo Q-RPT
Arguments
“period ":
Period to integrate the measurement over (ms). Can be from 200 ms to 20000
ms. Set to ‘0’ to enable automatic read rate.
Remarks The RPM4 can have the speed in which it integrates each measurement (“read rate”) automatically
adjusted based on the rate, or it can manually set to a fixed period. Increasing the read rate increases
the reply time for pressure and rate queries. In differential mode and when using the HL Q-RPT, the
Lo Q-RPT read rate is always set to the same read rate as the Hi.
Example
(enhanced)
Cmd sent:
Query reply:
“READRATE 1000”
“1000” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“READRATE? 1000”
“1000”
Example
(classic)
Sent:
Reply:
“READRATE=1000”
“1000”
Errors ERR# 6:
ERR#10:
The “period” argument is out of range.
The suffix ‘n’ is invalid
See Also “PR”, “PRR”, “SR”
3.5.7.2