CD-3490 Portable Compact Disc Player
(420-5055) Features Faxback Doc. # 18095
The Optimus CD-3490 Portable Compact Disc Player uses the latest digital
audio technology to give you clean, crisp sound from your compact discs.
You can connect the CD player to your home audio system or connect it to a
pair of stereo earphones for portable, private listening.
The CD player's carrying case lets you take the CD player almost anywhere
you go. Its unique digital anti-shock system virtually eliminates skips
caused by sudden shocks.
The CD player's features include:
Digital Anti-Shock System (DAS2) - rapidly scans data from the disc and
stores it in memory for uninterrupted
play with no sound skip even when the
player is exposed to shocks or
vibration, making this CD player
excellent for use in your automobile.
Eight-Times Oversampling with - improves the CD's sound by multiplying
with Digital Filtering the standard 44.1 kHz sample rate by
eight and using a digital filter to
reduce or eliminate distortion.
1-Bit DAC - uses the latest in digital-to-analog
conversion circuitry to accurately
reproduce all sound levels with
virtually no distortion.
Digital Signal Processing System - creates a fuller sound by increasing
the bass levels or the ambience.
Automatic Search Music System - lets you quickly locate and play any
track on a CD.
Audible Search - helps you locate a particular section
of music by rapidly playing the CD in
either direction.
Sequence Programming - lets you program up to 22 tracks to
play in any order you choose.
Repeat Play - lets you automatically repeat a single
track, an entire CD, randomly selected
tracks, or a programmed sequence.
Random Play - plays back selections from a disc in
random order.
Pause/Cue - lets you temporarily stop play, or cue
a track for play at alater time.
5- and 3-Inch CD Compatible - plays standard 5- or 3-inch CDs.
Backlight - for use at night or whenever the
ambient lighting conditions make
the display difficult to read.
Intro Scan - helps you locate a desired track by
playing the first 10 seconds of each
track on the CD.
Auto Power On/Off - automatically turns on the CD player
when you press >|, P MODE, |<<, or >>|,
and turns off the player when you press
STOP or when it finishes playing all
the tracks.
Hold Function - helps prevent accidentally changing the
CD player's operating mode when you
listen to a CD, and preserves battery
life by locking all controls when you
turn off the CD player.
Three Power Sources - let you power your CD player from AA
batteries, standard AC power (using an
optional AC adapter), or your vehicle's
battery (using an optional DC adapter).
Built-In Battery Charger - recharges the battery inside the player
when you use special-order nickel-
cadmium batteries.
IMPORTANT: You need a pair of stereo earphones, amplified speakers, or a
home audio system to use your CD-3490. Your local Radio Shack
store carries a complete line of earphones and speakers.
SPECIAL FEATURES
DIGITAL ANTI-SHOCK SYSTEM (DAS2)
Your CD-3490 contains special circuits to overcome sound skipping problems
caused by shock or vibration. This means you can carry the player anywhere
you go or use it in your vehicle. When you turn on the anti-shock system,
the CD player continuously saves the next few seconds of music in memory.
During a shock or vibration that would normally make a CD player skip or
pause, the CD player plays directly from memory.
During play, press DAS2 to turn on the anti-shock system. The sound
briefly stops, then the empty memory icon appears on the display and
quickly increases to full as the music is stored in memory.
When the CD player is subjected to a shock during play, the music stored
in memory plays and the amount of storage on the memory icon begins to
decrease. When the shock is over and the CD player can properly read the
CD again, music is once again stored in memory, and the memory icon
increases to full.
NOTES: If shocks are received repeatedly, all music in the memory is
quickly used. When the empty memory icon appears, the sound
might skip.
The anti-shock system consumes more battery power. When you use
the player in a stable location, turn off the system to conserve
battery power.
To turn off the anti-shock system, press DAS2 again. The sound
briefly stops, then the empty memory icon disappears from the
display.
DIGITAL SIGNAL PROCESSING SYSTEM
When you play a CD on your CD player, you can use the digital signal
processing system to boost the bass sound or to expand the sound to suit
your preference. This affects both the LINE OUT and PHONES outputs.
To increase the bass levels or the ambience:
Press DSP once so the LIVE 1 indicator lights. The bass sound is
increased.
Repeatedly press DSP until the LIVE 2 indicator lights. The ambience
is increased.
Repeatedly press DSP until the LIVE 3 indicator lights. Both the bass
sound and the ambience are increased.
To return to normal sound, repeatedly press DSP until no indicator lights.
PROGRAMMING THE CD-3490
Programming and Playing a Sequence of Tracks
You can program up to 22 tracks on a CD to play in any order you choose,
and even program the same track to play more than once.
1. During play, repeatedly press P MODE until M (without the repeat play
icon) and 00 flash on the display. Selection number 01 appears on
the display.
2. Press either >>I or I<< to display the number of the first track
you want to program.
3. Press M-SET to store the selected track number. The selection number
advances by one and the track number on the display changes to 00.
4. Repeat Steps 2 and 3 for each track you want to program, up to 22
tracks.
NOTE: The CD player automatically begins to play if you program 22
tracks.
5. To play the programmed sequence, press >||. M lights steadily and
the first track in the sequence plays. After the last programmed
track ends, the CD player stops.
At the end of programmed play, M disappears from the display, but the
programmed sequence is still in the player's memory.
NOTES: While you play the programmed sequence, you can use >>| to move
forward or |<< to move backward in the sequence.
To return to normal play from programmed play, repeatedly press
P MODE until M disappears from the display.
To restore programmed pay after it has stopped, repeatedly press
P MODE until M (without the repeat play icon) appears on the
display. Then press >|| within 8 seconds to play the sequence.
Checking, Adding to, Replacing, or Clearing a Track in the Programmed
Sequence
To check the programmed sequence, repeatedly press P MODE until the first
programmed track number and M (without the repeat play icon) flash on the
display. Then repeatedly press M-SET. Each time you press M-SET, the
display shows the number of the next track in the sequence.
To add to the end of a programmed sequence, repeatedly press P MODE until
the first programmed track number and M (without the repeat play icon)
flash on the display. Then repeatedly press M-SET until 00 flashes on the
display. Press >>| or |<< to display the new track number you want to
program. Then press M-SET.
NOTE: You cannot program more than 22 tracks.
To replace a programmed track, repeatedly press P MODE until the first
programmed track number and M (without the repeat play icon) flash on the
display. Then repeatedly press M-SET to view the track numbers in the
programmed sequence. When a track number you want to replace flashes on
the display, press >>| or |<< to select the track you want to program
in its place. Then press M-SET to program the new track number.
To clear the programmed sequence from memory, press STOP to stop the CD
player, then press OPEN.
(cs 11/9/95)
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