IRM-H238/TR2 Everlight Electronics CO., LTD, IRM-H238/TR2 Datasheet - Page 4

• Manufacturer Part Number: IRM-H238/TR2
• Description: Infrared Receivers Infrared Remote
• Manufacturer: Everlight Electronics CO., LTD

Specifications of IRM-H238/TR2

• Peak Wavelength: 940nm
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 5.5V
• Mounting: Through Hole
• Pin Count: 4
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The Notice of Application:
Transmission remote control signal consist of four parts: Encode Part, IR Transmitter Source, IRM
device, Decode Part
If the above items hardly assure of its application, it’ll cause NG(no good) message from the edge
of signal.
Test Method：
OUTPUT WAVE FORM
The specified electro-optical characteristics is satisfied under the following
Conditions at the controllable distance.
IR TANSMITTER
Everlight Electronics Co., Ltd.
Device No：DMO-238-377
Fig.-1 Transmitter Wave Form
Measurement place
External light
Standard transmitter
Measuring system
1. When IRM-H2xx code select frequency, it need to well understand the center system of
2. Strong or weak light of IR Transmitter can affect distance of transmission.
3. Minimum Burst Length T
4. It needs to ensure the translation range of decode part if it is applied to the pulse-width range.
A place that is nothing of extreme light reflected in the room.
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)
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,∆λ=50nm. Also, photodiode is used of PD438B(Vr=5V).
(Standard light / Light source temperature 2856°K).
According to the measuring system shown in Fig.-3
encode part.
center frequency of each product.
Carrier frequency is adjusted to
EVERLIGHT ELECTRONICS CO.,LTD.
burst
(number of pulses per burst) : 10 cycles
Prepared date：11-24-2006
http:\\www.everlight.com
Duty=0.5
OUTPUT PULSE
OF DEVICE
IRM-H2xx/TR2 SERIES
D.U.T output Pulse
Rev 2
Prepared by：Cindy Lin
Page: 4 of 12