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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Specifications
What music file formats does the DM-420 support?
The DM-420 can store and play WMA (Windows Media Audio) files with bit rates of between 5 and 320 kbps and mp3 files with bit rates of between 8 and 320 kbps. Variable bit rate mp3 files may not play properly.
The DM-420 is compatible with Microsoft Corporation DRM 9 but not with DRM10.
What operating systems support the DM-420 digital voice recorder?
The DM-420 is supported by Windows XP Home Edition service packs 2 and 3, Windows XP Professional service packs 2 and 3, Windows XP Professional x64 Edition service pack 2, and the 32-bit and 64-bit versions of the following Windows Vista editions: Home Basic, Home Premium, Business, Enterprise and Ultimate (all at service pack 1).
The DM-420 is supported by Macintosh Mac OS X 10.4.11 (“Tiger”) – 10.5 (“Leopard”).
How much dictation recording time is available in the DM-420?
The amount of potential dictation recording time available in the DM-420 depends on several factors, including the selected quality mode and whether the recorder is configured to use internal memory or a removable memory card (sold separately).
When a quality mode is selected, several audio file properties are put into place. These properties determine the level of detail of the saved file data. A higher-quality recording saves more-detailed information and creates a larger data file that uses more memory. A lower-quality recording makes a less-detailed data file, so the memory lasts longer.
Podcasts and Audible files use up portions of the recorder’s built-in flash memory, as do files saved on the recorder when it is used as a USB flash drive (aka “thumb drive”). This usage will reduce the amount of memory available for recording new files.
The table below shows the maximum dictation recording times possible using the built-in memory (assuming there are no other files saved in the recorder).
Recording Mode | Maximum Dictation Recording Time |
| (Internal Memory) |
| |
MP3 320 kbps mode | 13 hours, 45 minutes |
| |
MP3 256 kbps mode | 17 hours, 15 minutes |
| |
MP3 192 kbps mode | 23 hours, 00 minutes |
| |
MP3 128 kbps mode | 34 hours, 45 minutes |
| |
ST XQ mode | 34 hours, 00 minutes |
| |
ST HQ mode | 68 hours, 00 minutes |
| |
ST SP mode | 136 hours, 00 minutes |
| |
HQ mode | 136 hours, 00 minutes |
| |
SP mode | 268 hours, 00 minutes |
| |
LP mode | 533 hours, 00 minutes |
| |
