Sony DTC-87ES Operating Instructions Manual page 5

Serial copy management system
This unit utilizes the serial copy management system that
permits digital-to-digital recording for one generation. You
can record CD sound or other digital formats through a
digital-to-digital connection.
4-Head, 4-DD Motor Mechanical Deck System
In addition to the standard two heads for recording and
playback, this unit employs two additional heads for after-
monitoring, forming a four-head system. This system allows
after-monitoring of the recorded sound during recording in
the same manner as with three-head cassette decks. In
addition, the unit employs direct-drive motors for the drum,
capstan, and reel drives, realizing silent and stable tape
transport.
Date Function Automatically Records the Recording
Date and Time
The year, month, day, day of the week, hour, minute and
second are automatically recorded in the subcode area
during recording, so that during playback you can display
this data to check when the tape was recorded. This
function is especially convenient when recording live
performances, etc.
Three sampling frequencies
Recording/playback can be done with three sampling
frequencies (48 kHz, 44.1 kHz and 32 kHz).
48 kHz: For analog and digital input signals in a standard
mode.
44.1 kHz: For compact disc and pre-recorded DAT tape.
32 kHz: For analog input signals in a long-play mode.
Long Play mode
This unit can operate in a long-play mode. Analog input
signals can be recorded or playback for up to four
consecutive hours when the DT-120 DAT cassette tape is
used. The sampling frequency will be 32 kHz in the long-
play mode.
Visible cassette loading
You can view the tape operation through the lid of the
cassette compartment.
Excellent sound quality
1-bit A/D converter
For the A/D converter section which converts analog input
signals to digital signals, the unit employs a 1-bit A/D
converter which theoretically generates no zero-cross
distortion for a clear, elegant sound quality.
Pulse D/A converter
Superior playback performance is achieved through the
combination of an 8X oversampling digital filter with a 1-bit
D/A converter.
Independent Digital and Analog Power Sources
Since the design of the power source section is important
for obtaining good sound quality, this unit incorporates two
large-sized, large-capacity transformers for independently
supplying power to the digital/mechanical deck sections
and the analog section. This design eliminates from the
source any interference introduced through the power
supply.
Rich Variety of Subcode Information
This unit can record subcode information such as Start IDs,
program numbers, Skip IDs, and absolute time data,
enabling you to quickly locate tunes and display the
playback time in the same manner as when playing
compact discs.
High-Speed Search Function
Direct-drive reel motors and a software servo system
enable you to locate tunes at high speeds up to 200-times
the normal playback speed.
Digital fade-in/fade-out
Professional sounding fade-in/fade-out of either digital or
analog signals can be accomplished by use of the FADER
button.
Post edit recording of sub codes
You can record or rewrite the following sub codes after the
audio signal recording has been completed.
Start ID: Signifies the beginning of a selection.
Program number: Gives a number to the selection.
Skip ID: Signifies the beginning of a portion to be skipped.
End ID: Signifies the end position of recording/playback.
Since sub codes are written on the tape separately from
audio signals, the audio signals are not affected.
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