14-14, Remote control signal acceptor, Faq

Guides for USB downloader management program

-Power output : DC 4.2 V

-Charging time : 1.5 hour charging, about 6 hour continuous playing with maximized volume.

C. Remote control signal acceptor

MP3 is the technical abbreviation for a method of compressing audio files into digital formats. (MPEG-1 Audio Layer 3) This is the most used compression scheme. It can compress the standard audio track to smaller size and doesn’ t degrade the sound quality

- Remote control signal infrared sensor

–Supportable signal : NEC/Sharp remote control receiving protocol , and all the remote control signal of leading edge type signaling system.(Some of that may not receive the signal exactly.)

6.2. Precautions

A. Do not disconnect the USB cable or audio card while the USB download management program is working.

B.Prevent this product from strong shock or moisture. Strong shock may cause damage to the unit. If the unit is moisturized, clean it with dry cloth as soon as possible and consult with the A/S center.

E.Do not use the USB downloader with any other purpose except charging , communicating with, downloading music file(s) on audio card and receiving remote control signal .

D. If another applications occupy too much system resource, the performance of USB downloader may be degraded.

7. FAQ

What is VBR(Variable Bit Rate)?

The bitrate of a compressed file is the main determinant of sound quality. The bitrate is the amount of data stored for each second of music. CBR compressed files store the same amount of data for every second in the file, even if some seconds contain very complex music and others contain very simple music. VBR files by contrast, vary the amount of data stored depending on the complexity of a particular section of music. In a symphonic piece, when the full orchestra is pounding away the bitrate will be higher, and when just a single flute is playing, the bitrate will be lower. Ideally you should get smaller, higher quality files with VBR, but this isn't always the case.

What is BRM?

BRM is the technical abbreviation for Bit Rate Modification, named by Etronics Corp. This is appropriate method for the portable player as well as keeping the highest compressing ratio by using VBR.

The 25:1 compressing ratio is based on MPEG II, and 15:1 is on MPEG I. ’ BRM’ is assigned to extension(.brm) of music file(s) downloaded on the audio card.

Can you play the BRM file on your PC ?

No. The BRM file is encoded by RC5 128bit security, thus, you can not play it on your PC and another MP3 player except the audio card.

What is MP3 ?

14-14

LAD-500(R), LAD-500 specifications

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