Pressure Systems 98RK-1 Command, “C 02”, ‘ 02’ is the sub-command index ii for Calculate & Apply

Pressure Systems, Inc. 98RK-1 & 9816 User’s Manual©

Command 'C'- Sub-command Index 02: Calculate & Apply Correction Coefficients

This sub-command has no additional parameters.

Command	“C 02”
	‘C’ is the command letter.
	‘ 02’ is the sub-command index (ii) for Calculate & Apply
	NOTE: all parameters are separated by a space.
Response	“A”
	‘A’ is the acknowledge letter — returned if the required number of
	calibration data points had their data successfully collected previously, and
	the resulting calculated data is reasonable. Else, an error (‘N’) response is
	returned.

Description: This sub-command finishes the Multi-Point Calibration function, previously started by the Configure & Start (‘00’) sub-command. It calculates new correction coefficients using the pressure data collected by all required executions of the Collect Data (‘01’) sub-command.

All the averaged data points collected previously are checked for reasonableness, and then a new set of zero and gain correction coefficients are calculated by the least-squaresmethod for each channel (transducer) affected by the calibration. These are stored in the module’s volatile memory for use by all subsequent EU data conversion of these channels until the module is reset or powered off. These coefficients may be stored in the non-volatile memory of the module’s transducers with the 'w' command (see indexes 08 and 09 for that command). The latest calculated zero and gain coefficients may be inspected with the 'u' command at any time for any channel.

Finally, this sub-command restores the original “A/D samples for averaging” count used by the module’s data acquisition process to the value that was in use before the Multi-Point Calibration function was originally started.

Page 49 www.PressureSystems.com