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EVERLIGHT ELECTRONICS CO.,LTD.
IRM-26xxT 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
λ p=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
IN
Input
CGA & filter
Demodulator
OUT
μC
Carrier frequency f0
Modulated IR signal
min 10 pulses
Oscillator
AGC/ATC & digital control
GND
Everlight Electronics Co., Ltd.
http:\\www.everlight.com
Rev 1
Page: 4 of 10
Device No ： SZDMO-026-070
Prepared date ： 2-Mar-2007
Prepared by ： Zhang Meijuan
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