Welch Allyn LC101 CO2 Module - User Manual - Manual (Page 57)

LC101 CO
2
Module OEM Implementation Manual Appendix A - Software Prodedures
Welch Allyn OEM Technologies Confidential Page 57
1. Initialize breath data update rate .
2. Request ambient barometric pressure .
3. Divide ETCO
2
(in mmHg) value by ambient barometric pressure (in mmHg). The result is the
ETCO
2
value as a percentage of the barometric pressure.
Zero Calibration Sequence Example
Seq. Host Module Description
1 Host sends Unprotect command.
Module responds to command from host.
2 Host sends Perform Zero Calibration command.
Module responds with status - Calibration in Progress, or
if not in unprotected measurement or autorun mode, response is Invalid
Operation (use ), or
if the previous calibration is active, response is
Cal. Already in Progress,
or
if the LC101 had been operating for < 5 min., response is Cal. Low Run
Time.
3 Host polls for completion of sampling.
Module responds with status – Calibration in Progress. Repeat this
step until a response other than is returned.
Module responds with status – Calibration OK, or
if acquiring data does not meet specifications, response is Unable to
Perform Cal., Data Error.
4 Host sends Protect command.
Module responds to command from host.