A-10 
 
A.7.3 SpO
2
Standards  Meet standards of ISO80601-2-61 
*Measurement accuracy verification: The SpO
2
 accuracy has been verified in human experiments 
by comparing with arterial blood sample reference measured with a CO-oximeter. Pulse oximeter 
measurement are statistically distributed and about two-thirds of the measurements are expected to 
come within the specified accuracy range compared to CO-oximeter measurements. 
SpO
2
 measurement range  0 to 100% 
Resolution 1% 
Response time 
 30 s (PI > 0.3, no disturbance, SpO
2
 value sudden change 
within 70% - 100%) 
Accuracy 
70 to 100%: ±2% (adult/pediatric mode) 
70 to 100%: ±3% (neonate mode) 
0% to 69%: Not specified. 
*Studies were performed to validate the accuracy of Pulse Oximeter with neonatal SpO
2
 sensors by 
contrast with a CO-Oximeter. Some neonates aged from 1 day to 30 days with a gestation age of 
22 weeks to full term were involved in this study. The statistical analysis of data of this study 
shows the accuracy (Arms) is within the stated accuracy specification. Please see the following 
table. 
Sensor type  Totally neonates  Data  Arms
518B  97 (51 male & 46 female)  200 pairs  2.38% 
520N  122 (65 male & 57 female) 200 pairs 2.88% 
The Pulse Oximeter with neonatal SpO
2
 sensors was also validated on adult subjects. 
Refreshing rate  1 s 
PI measurement range  0.05% to 20% 
 
Alarm limit  Range (%)  Step (%) 
SpO
2
 High    (low limit + 2) to 100 
1 
SpO
2
 Low  Desat to (high limit – 2) 
Desat  0 to (high limit – 2) 
 
Information of the Test Subjects of the Clinical Study Report:   
Skin color  Gender Number Age(years)  Health 
Black Male  1  28.2±9.19  Healthy 
Female 1
yellow Male  3 
Female 9