Technical Documentation
DA-78HR
The DTRS format has long been respected as the most
reliable format in digital recording, and now the DTRS
format is leading the way into high resolution 24 bit
recording. The DA-78HR works with 16 bit DTRS
machines, using the same DTRS Sync line for sample
accurate lock plus the ability to read and write the
older 16 bit format. However, the DA-78HR offers the
ability to write 8 tracks of 24 bit audio to tape in the
HR format, built in SMPTE synchronization, MIDI ports
for MTC and MMC, plus a built-in 8 channel digital
mixer for internal bounces or monitor mix generation.
7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.tascam.com
All features and specifications are subject to change without notice. Contact your local TASCAM representative for the latest information.
The DA-78HR's high audio quality, long record time, rugged
reliability, built-in time code capabilities, built-in MIDI
capabilities, and affordable price combine into a product that
can handle numerous situations.
Personal and Project Studios
Maximum features, minimum hassle. The DA-78HR brings
DTRS tape into 24 bit audio, offering the very best sound
quality available today. New features like built in MIDI ports
and SMPTE synchronization gives you the ability to chase other
tape machines (analog or digital), and the ability to work with
sequencers and digital consoles. For the ultimate cost effective
flexibility without having to locate additional accessories, the
DA-78HR is the best digital tape machine for the market.
Live Performance and Recording
In live performance, there is no take 2. Whether you are
using the DA-78HR to play some additional backing tracks or
recording the performance live, you can count on the DA-78HR
to get it right the first time. With 108 minutes of record time
on a single tape, you can put a whole live song set on a single
tape; no need to stop everything so you can switch tapes.
Audio for Video on a Budget
For anyone trying to make music for television or film, the
DTRS format is the de-facto standard format for transfers
and many stages of recording. The synchronization features
will allow you to chase another audio machine, or a video deck.
Again, the 108 minute record time was maintained for the new
24 bit recording mode, allowing 1 hour reels to be stored on a
tape, along with reference tones and the independent subcode
time code track.
More advanced video applications will want
a DA-98HR, which adds 9 pin control, blackburst resolve, and
built in bit split for higher resolution audio recording.
Page 1 of 3
DA-78HR_TECHDOC.pdf
032500
• Records 8 tracks of 24 Bit Audio To Hi8 Tapes
• 24 Bit A/D and D/A Converters
• >104dB Dynamic Range
• 108 Minutes of Record Time on 120 Hi8 Tape
• SMPTE Time Code Generation and Chasing
• Generates MIDI Time Code
• Responds to MIDI Machine Control
• Reads and Writes 16 and 24 Bit DTRS Tapes
• 16 Machine Sample Accurate Lock with DTRS Sync
• Balanced DB25 & Unbalanced RCA Analog I/O
• TDIF Digital I/O & SPDIF Digital I/O
• Word Sync In/Out/Thru
• Track Slip from -200 to +7200 Samples
• Built-In 8 Channel Digital Mixer
PRODUCT OVERVIEW
APPLICATIONS
SPECIFICATIONS
Specifications:
Format:
Recording Method:
Tracking Method:
Maximum Record Time:
Time to Play from Stop:
Shuttle Speeds:
Varispeed:
Subcode:
SMPTE Frame Rates:
Error Correction:
Frequency Response:
Signal to Noise Ratio:
Total Harmonic Distortion:
Channel Separation:
Sampling Frequency:
Recording Resolution:
Reference Level:
Crossfade Time:
Track Delay:
Word Sync Source:
A/D Converters:
D/A Converters:
Analog Inputs:
Analog Outputs:
Digital I/O:
Remote/Sync:
Time Code In:
Time Code Out:
Word Sync In/Thru:
Word Sync Out:
MIDI I/O
Punch In Port:
Dimensions:
Weight:
Power Requirements:
Power Consumption
Electromagnetic Environment:
DTRS and DTRS-HR
Rotary Head / Helical Scan
ATF (Automatic Track Finding)
108 min (using P6-120 tape)
< 2 seconds
8x, 4x, 2x, 1x, 0.5x, 0.25x
±6%
Independent ABS and SMPTE TC
30fps, 30dfps, 29.97fps, 29.97dfps,
25fps, 24fps
Double-encoded Reed-Solomon code
20Hz-20kHz ±0.5dB
>104dB (HR), >100dB (Standard)
<0.004% (HR), <0.005% (Standard)
>90dB @ 1kHz
44.1kHz, 48kHz
16 bit, 24 bit
-16dB (full bit)
10ms to 200ms (10ms increments)
-200 to +7200 samples
(set in samples or msec)
Internal, Word, SPDIF
24 bit, 128x oversample (selectable dither)
24 bit, 128x oversample
DB25, +4dBu, 20kOhm
(8x) RCA, -10dBV, 10kOhm
DB25, +4dBu, 10kOhm
(8x) RCA, -10dBV, 250 Ohm
TDIF-1 Format, RCA Coaxial SPDIF
DTRS Sync DB15
RCA, 0.5Vp-p to 10Vp-p, 10kOhm
RCA, 2Vp-p, 100kOhm
Auto Terminating BNC, 75 Ohm (TTL)
BNC, 75 Ohm
In, Out, Thru
1/4" phono (For TASCAM RC-30P)
482x143x350mm, 19" x 5.6" x 13.8"
8.1kg, 17.8 lbs
USA/Canada 120VAC, 60Hz
UK/Europe 230VAC, 50Hz
Australia 240VAC, 50Hz
34W
E4
