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 .
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Olympus Imaging America Inc.
Page 10 of 14
Last updated on September 24, 2009
Usage
How is the recorder turned off?
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.
How do I select which type of memory to use?
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
Format
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).
How is recording volume controlled?
By default, the DM-420 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
: Ideal 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.
How is playback volume controlled?
The playback volume is controlled during playback by using the [
+
] (plus) and [
-
]
(minus) buttons on the circular pad on the face of the recorder. Pressing [
+
] increases
the playback volume. Pressing [
-
] reduces the playback volume.
How is the playback speed controlled?
The playback of files in the DM-420 can be changed to between 50% and 150% of the
default playback speed in increments of 0.05. The tone of the file will be adjusted
digitally without changing the pitch so that the recording sounds natural.
The play speed is changed in the recorder’s menu, under
Play Speed
. The options are:
•
S. Play
(Slow Play): x0.50 to x0.95 of normal speed in x0.05 increments
•
F. Play
(Fast Play): x1.05 to x2.0 of normal speed in x0.05 increments
S. Play
and
F. Play
are not available while
Noise Cancel
is enabled. During fast/slow
playback, files will be played in monaural even if they were recorded in stereo.
