Item	Descrition
Heart pulsation measurement method	Optical, using light absorption modulation via capillary filling pulsations.
Light wavelength	940nm (infrared)
Light noise immunity	Light noise is minimized using ELP(Environment Light Protection) technology.
Heart Beat Detection method.	High Precision Peak Detection from 2nd Derivatives of PPG.
Clock for Heart Beat Interval Measurement	The time interval of heart beats is measured by high precision clock.   Clock Resolution: 0.000976 sec. Clock Accuracy : 0.002%   l       The clock is divided by 32 form main clock. l       Main clock : 32.768kHz Quartz Crystal Oscillator with accuracy : +-20ppm (0.002%)
Measurement Quantity	PPG waveform, heart rate per minute, heart beat interval, heart beat event, perfusion index.

장치에서 측정되는 각 측정량들의 의미 및 전송시 사용되는 데이터 포맷 설명 문서아아디: LXD23  필수 참조. 문서 아이디 : LXD23 문서 제목 : ubpulse 3시리즈 통신규격. 다운로드 : http://www.laxtha.kr/LXD/LXD23_ubpulse3_CommunicationSpec.pdf