ACTiSYS ACT-IR320L ユーザーズマニュアル

ACT-IR320L

User’s Manual

 

 Copyright 2000-2006 ACTiSYS Corp

Page 5 of 6 

Nov. 6, 2006

Version 1.0

 

 

ACT-IR320L uses 455 KHz ASK-IR technology to support long distance transmitting / receiving. ASK-IR is a 

technology that based on sub-carrier and it is not compatible to IrDA. Therefore, it should be used in pairs. 

Once ACT-IR320L is connected to serial port of host device, it enters into 

 mode. The LED is on. Two 

ways can make IR320L to enter into 

 mode. One is the host device sends some data to it by passing 

RxD pin. Another is that IR320L receives ASK sub-carrier from outside and passes those data to TxD pin. 

When IR320L is in 

 mode, the LED blinks. 

ACT-IR320L detects RxD pin’s level and turns the ASK sub-carrier on and off when it is sending data. Thus 

no need to care about baud rate setting. It’s only limited by the frequency of ASK modulation. The baud rate 

supports up to 38.4 kbps.

 

Generally, there are two ways to connect to a serial port. One is 3-wires (Flow Control free), while another is 

9-wires (Flow Control enabled). Based on ACT-IR320L no buffer in circuit, it is a 3-wires operating dongle. It 

doesn’t have to enable flow control mechanism. It means that it doesn’t detect the DSR and CTS pins from 

host device and always pull DTR and RTS pins to high. Application program itself should take care of flow 

control.

 

The radiant intensity of ACT-IR320L relates to angle between two dongles that face to face. The angle of half 

intensity is +/- 10

o

. 

It will get more effective performance by adjusting angle.