EVERLIGHT ELECTRONICS CO.,LTD.

Everlight Electronics Co., Ltd.

http:\\www.everlight.com

Rev 1

Page: 4 of 10

Device No：SZDMO-037-031

Prepared date：31-August-2007

Prepared by： Liuyan

IRM-37xxT SERIES

Test Method：

The specified electro-optical characteristics is satisfied under the following

Conditions at the controllable distance.

Measurement place

A place that is nothing of extreme light reflected in the room.

External light

Project the light of ordinary white fluorescent lamps which are not high

Frequency lamps and must be less then 10 Lux at the module surface.

(Ee≦10Lux)

Standard transmitter

A transmitter whose output is so adjusted as to Vo=400mVp-p and the output

Wave form shown in Fig.-1.According to the measurement method shown in

Fig.-2 the standard transmitter is specified.

However , the infrared photodiode to be used for the transmitter should be

λp=940nm,Δλ=50nm. Also, photodiode is used of PD438B(Vr=5V).

(Standard light / Light source temperature 2856

°K).

Measuring system

According to the measuring system shown in Fig.-3

Block Diagram：

Vs

Modulated IR signal

min 10 pulses

Carrier frequency f0

OUT

IN

GND

Input

CGA & filter

Demodulator

Oscillator

AGC/ATC & digital control

µC