Pressure Systems, Inc. Model 9116 User’s Manual
Page 34
www.PressureSystems.com
Command ‘C’— Sub-command Index 01:
Collect Data for a Calibration Point
This sub-command has two (2) additional required parameters.
Command
“
C 01
pnt pppp.pppp
”
‘C’ is the
command
letter.
‘ 01’ is the
sub-command index
(
ii
) for
Collect Data
‘
pnt
’ identifies a
particular calibration point
that will be supplied. It must
be between 1 and
npts
, where
npts
was a parameter of the previously
executed
Configure & Start
(‘00’) sub-command.
‘
pppp.pppp
’ is the
pressure
value (in current EU) that is actually applied
currently to the module’s transducers by a precision calibrator.
NOTE: all parameters are separated by a
space
.
Response
“
pppp.pppp [pppp.pppp]...
”
The actual
measured pressure values
(in current EU) from each affected
channel of the module (highest numbered specified channel first, lowest
numbered specified channel last, as per the
pppp
bit map parameter of the
Configure & Start
(‘00’) sub-command. The
decimal
response datum
format (format 0) is always used.
Description:
This sub-command (to be executed two or more times) carries out the
data
collection
phase
of the
Multi-Point Calibration
function for exactly
one
(1)
calibration point (i.e., per parameter
pnt
). Each execution applies a specified
pressure value; then collects, averages, and stores the data for that calibration
point. It must be repeated until all pressure points, as specified by the
npts
parameter of the original
Configure & Start
(‘00’) sub-command, are applied and
their data collected. For each particular point, enter the sub-command after that
point’s
pressure value
has been properly applied to the module, and that value is
stable (unchanging). Pressure may be applied to either the
Cal
or
Run
ports, as
necessary. Use a Model 903x Calibrator or some other suitable precision
pressure source to generate the pressure.
It is not necessary to enter the two or more calibration points in strict numerical
order (i.e., 1, 2, ...
npts
). Any convenient entry order is allowed, though each
point’s actual
pressure value
must be correctly stated (with the
pppp.pppp
parameter) when executed. Previously entered points may be reentered if it is
necessary to account for hysteresis. However, all the points specified by the
pts
parameter of the
Configure & Start
(‘00’) sub-command must be supplied
before the final
Calculate and Apply
(‘02’) sub-command can be executed, else
an error will result.
