Olympus DM-520 사용자 설명서

 

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Olympus Imaging America Inc. 

Page 13 of 15 

Last updated on September 25, 2009 

Clicking on the [

Stop] button launches another dialog box to confirm the devices that 

are to be stopped. Clicking the [

OK] button closes the USB connection.  

The desktop screen will display a message balloon above the taskbar indicating that it is 
safe to disconnect the hardware. 

 

Any USB device should be disconnected from a Macintosh computer either by clicking on 
the 

EJECT button or dragging the drive icon that represents the device to the Trash. 

Using an accessory microphone with an extended frequency range may not improve the 
quality of the recordings in a DM-520. The recorder has an overall frequency response of 
40 – 23,000 Hz, but the different quality modes modify the detail of the saved file data 
by saving some frequencies and discarding others. This is how the recorder is able to 
vary the potential recording time and use the built-in flash memory more efficiently. 
The table below shows the overall frequency response in each recording mode: 

PCM 48 kHz mode 

40 Hz - 23,000 Hz 

PCM 44.1 kHz mode 

40 Hz – 21,000 Hz 

MP3 320 kbps mode 

40 Hz – 20,000 Hz 

MP3 256 kbps mode 

40 Hz – 20,000 Hz 

MP3 192 kbps mode 

40 Hz – 19,000 Hz 

MP3 128 kbps mode 

40 Hz – 17,000 Hz 

ST XQ mode 

40 Hz - 19,000 Hz 

ST HQ mode 

40 Hz - 16,000 Hz 

ST SP mode 

40 Hz - 9,000 Hz 

HQ mode 

40 Hz - 13,000 Hz 

SP mode 

40 Hz - 8,000 Hz 

LP mode 

40 Hz – 3,000 Hz 

The DM-520 is compatible with the optional A-514 AC Adapter. The adapter can be used 
to power the recorder and also to charge the rechargeable batteries bundled with it. 
The A514 AC Adapter can be purchased directly from The Olympus Store by clicking