D I G I T A L T E C H N I C A L S U P P O R T

O L Y M P U S I M A G I N G A M E R I C A I N C . ( 8 8 8 ) 5 5 3 - 4 4 4 8

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Accessories

Will using an accessory microphone with an extended frequency range improve the quality of my recordings?

Using an accessory microphone with an extended frequency range may not improve the quality of the recordings in a DM-420. The recorder has an overall frequency response of 40 – 20,000 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 quality mode:

Quality Mode

Overall Frequency Response

 

 

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

 

 

Is there an AC adapter available for the DM-420?

The DM-420 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 here.

Troubleshooting

I formatted the recorder using my computer and the Voice Guide Data is gone. Can I restore it?

If you format the recorder and erase the Voice Guidance data by mistake, or if you want to change its language, the Voice Guidance Data can be copied from the Olympus Sonority software to the recorder via either of the following procedures:

•Uploading Voice Guidance Automatically

Olympus Sonority automatically detects the languages supported by a connected recorder and uploads the corresponding files not stored in the recorder. Voice Guidance languages that can be downloaded into the DM-420 are Japanese, English, French, German, Italian, Spanish, Russian, Finnish, Czech, Norwegian, Swedish, Portuguese, Greek, Danish, Polish, Dutch, Hindi and Urdu.

Connect the recorder with Voice Guidance capability to the computer and open Olympus Sonority.

Olympus Imaging America Inc.

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Last updated on September 24, 2009