User manual

7. R-Curves
7.1 R-Curve Defined
R-curves specify the relationship between the Red/IR ratio measured
by pulse oximeters and the SpO
2
value displayed. These curves are
obtained by each pulse oximeter manufacturer during clinical trials.
QA-510 has pre-loaded manufacturer’s R-curves (see the Appendix B
for a listing). However, the operator may establish user-defined, or
additional manufacturer R-curves, and these can be loaded into the
PRO-Soft QA-510, and further downloaded into the QA-510.
2
7.2 Creating R-Curves
To enter new, user-defined or factory R-curves, click the QA-510
Menu, then click R-curve. The following dialog box appears:
QA-510
R-curve
The form has two fields and a selection box. The upper field is the
R-curve name. The lower field is the file containing the R-curve it-
self. The selection box is where you select the target memory loca-
tion in the QA-510 to store the R-Curve. The Make new R-curve
button will take you to the screen below and will use the selected R-
curve as a starting point for generation the new R-curve. Pressing
Upload R-curve, will upload the selected R-curve to the QA-510
into the selected memory slot.
2
Contact your local METRON Representative for a list of R-curves
currently available for download to the QA-510.
7-1