Features - Akai DD1500 User Manual

1 - INTRODUCTION

FEATURES

• 8-track operation (4-track record/8-track playback) with immediate removability on the
Sony™ Magneto Optical (MO) disk (no back-up required). Record times for one side of
a 1.3GByte MO disk are 1 hour 40 minutes of mono recording at 48kHz, 2 hours of
mono at 44.1kHz and 3 hours of mono at 32kHz. Effective playback time can be
extended using extra MO drives and up to seven drives in total may be connected
using SCSI.
• 16-track operation (8-track record/16-track playback) using a fixed hard disk. The
largest single drive the DD1500 can accommodate is 4Gbytes offering in excess of 12
hours of mono recording at 44.1kHz.
• SMPTE/EBU IN and OUT (at all frame rates), Bi-phase IN and OUT, VITC IN and
RS422 (Sony™ P2 9-pin protocol) are all fitted as standard.
• As an RS422 MASTER, the DD1500 can be used to control video equipment for
synchronised editing of sound to picture and RS422 SLAVE operation allows you to
use a DD1500m as a slave device to a video editor.
• AUTO CONFORM function allows to import EDLs from external video editors with
automated recording of source reels into the DD1500.
• The SMPTE output will re-generate fresh, electronic timecode from an external
timecode source.
• The DD1500 will convert SMPTE/EBU timecode to Bi-phase and vice versa. It is also
possible to convert one frame rate of timecode to another.
• The DD1500 will convert SMPTE/EBU timecode to MIDI clock and MIDI TIMECODE
(MTC) and vice versa.
• The DD1500 can follow external timecode backwards and forwards, even at slow
speeds. High speed rewind, fast forward, spooling and jogging is also possible.
• Wordclock and video sync inputs fitted as standard allowing synchronisation to house
sync, digital audio and PAL/SECAM and NTSC video sync sources.
• Up to 20 analogue outputs may be installed (16 track outputs plus two stereo mix
outputs A and B).
• 20-bit digital to analogue converters (DACs) with 8 x oversampling. Separating them in
the DD1500a ensures high quality, interference-free analogue audio. All outputs use
balanced XLR connections at +4dBm.
• Up to 12 analogue inputs may be installed and these may be freely assigned to tracks
as you wish. All inputs use balanced XLR connections at +4dBm.
• 18-bit analogue to digital converters (ADCs) with 64 x oversampling.
• Three assignable General Purpose Inputs (GPI) and five assignable General Purpose
Outputs (GPO) are fitted as standard.
• Custom LSI dedicated for signal processing ensures fast and reliable operation.
• DSP FUNCTIONS include Timestretch, Pitch shift, Varispeed, EQ and Reverse.
• 16-channel digital mixer contained in the DD1500m with external MIDI control (can be
automated with an external MIDI sequencer).
• Dedicated MTR-style transport keys for play, stop, rewind, fast forward and record.
• MTR style autolocator with 100 locate memories and 100 'grab' markers.
Page 2 Version 2.00 - March, 1996