IRM-27XXA 查看數據表（PDF） - EVERLIGHT

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产品描述 (功能)

生产厂家

IRM-27XXA

Infrared Remote-control Receiver Module

EVERLIGHT 

EVERLIGHT ELECTRONICS CO.,LTD.

IRM-27xxA SERIES

The Notice of Application:

Transmission o remote control signal consist of four parts: Encode Part, IR Transmitter Source,

IRM device, Decode Part

1. When IRM-27xxA code select frequency, it need to well understand the center system of encode

part.

2. Strong or weak light of IR Transmitter can affect distance of transmission.

3. When using IRM-27xxA device, it requires the composition of code pattern to reach the demand

as follows:

Minimum Burst Length tburst (number of pulses per burst) : 10 cycles

Minimum data pause time:

Remocon Tx code with Full frame Repeat Remocon TX code with Repeat key

∑ ( ) Tactual ,data = Tdata − TBn − 150µs

n

∑ ( ) Tactual,gap = Tgap − TBn − 150µs

n

Tactual ,gap ≥ 2.0 ∗ Tactual ,data

Remocon TX repeat Code with minimum

burst length

Tgap ≥ 2.0 ∗ (Tr + 150µs)

4. It needs to ensure the translation range of decode part if it is applied to the pulse-width range.

If the above items hardly assure of its application, it’ll cause NG(no good) message from the edge

of signal.

Everlight Electronics Co., Ltd.

Device No：DMO-027-356

http:\\www.everlight.com

Prepared date：07-20-2005

Rev 2

Page: 6 of 10

Prepared by： Carryll Hsu

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