Olympus DM-520 사용자 설명서

 

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Olympus Imaging America Inc. 

Page 10 of 15 

Last updated on September 25, 2009 

The recorder is turned off by sliding the [

POWER/HOLD] control on the right underside 

of the recorder downward and then releasing it. The switch should then be moved 
upward to the 

HOLD position to prevent accidental activation of button functions. 

Different quality modes save the digital record of a signal with different levels of faithfulness 
to the original sound. The ST XQ and ST HQ modes are recommended for music, drama or 
interviews that may be made for broadcast because they make very detailed digital records 
of the sound and use a very wide frequency range. 
Lower-quality modes, such as SP (Standard Play) and LP (Long Play), make a less-detailed 
digital record of the signal and use a narrower frequency range so they will use up the 
available Flash memory much more slowly. These modes are best used for audio note 
taking or recording college lectures or seminars – situations in which large content capacity 
is more important than high audio quality. 

The selection of built-in memory or removable memory card is made in the menu. When 
a microSD or microSDHC card is inserted in the card slot for the first time and the 
recorder is turned on, the option to select the memory mode is displayed on the start-up 
screen. Thereafter the selection needs to be made in the 

Device Menu through the 

Memory Select function.  
The available options are 

Built-in Memory and microSD Card. MicroSD and 

microSDHC cards from 512MB to 16 GB can be used. For optimum performance, it is 
advised to format the card the first time it is put in the recorder. If the card is being 
used for dictation and files are frequently erased, it is advisable to routinely download all 
of the files to a computer and format the card to keep it free of a build-up of artifacts of 
previous files. Occasional formatting of the built-in memory using the menu 

function is also advised. 
One advantage of recording to removable media is that multiple cards can be used to 
organize content (e.g. one can hold podcasts and another can hold a music library).  

By default, the DM-520 records automatically at 100% volume level to prevent accidentally 
recording with the volume set too low.  
The recorder has three levels of microphone sensitivity: 

•  High: The highest recording sensitivity, it is suitable for conferences with large 

crowds and recording audio at a distance or low volume. 

•  Middle: Suitable for recording meetings and seminars with a small number of people. 
•  Low: The lowest recording sensitivity, it is suitable for close-up dictation. 

Microphone sensitivity is set via the 

MIC SENSE option in the recorder’s menu.  

The DM-520 also allows the user to manually preset a fixed recording level using the 

Rec Level > Manual option in the recorder’s menu. It also disables the limiter. The 
limiter automatically adjusts the recording level to prevent “clipping.” Clipping occurs 
when the recording level allows sound levels beyond the dynamic range of a recording 
device to be recorded. The result is distortion in the louder portions of the recording.