Tascam DA-78HR User Manual Page 47
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TASCAM DA-78HR
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8 - Synchronization with other DTRS units
This section describes the techniques and methods to
be followed when the DA-78HR is linked to other
DTRS units (e.g. TASCAM DA-98, DA-38, DA-88
and of course other DA-78HR units).
Up to 16 DTRS units can be linked, for a total of 128
digital tracks.
If you are connecting DTRS units of different types
to the DA-78HR, use the DA-78HR or a DA-98 as
the master unit and the other units as slave units.
8.1 Synchronization connections
The cable to be used when connecting the DA-78HR
to other DTRS units for synchronization purposes
should be a PW-88S cable. This is 1 meter (3 ft.)
long. If you require a longer cable, please consult
your TASCAM dealer.
NOTE
S
Be sure to use only the optional PW-88S sync cables. The
use of any other cables could damage the DA-78HR.
Be sure to connect the termination plug to the last slave’s
SYNC OUT
connector, or else incorrect functions may
occur.
Turn on all the DTRS units in your system, regardless of
whether you actually use all of them. A unit or units turned
off will make synchronization impossible.
To synchronize multiple DTRS units, use a pre-formatted
tape in the master unit, and also in the slave units. Since
the DTRS system uses ABS time to achieve synchroniza-
tion, it is impossible to synchronize using tapes without
ABS time recorded on them.
To synchronize multiple DTRS units, all the tapes in
each unit must be formatted at the same sampling
rate, or synchronization is impossible.
The synchronization connections form a “daisy-
chain”, with the master unit at the head of the chain,
and the last slave at the tail.
Connections are made from the
SYNC OUT
of one
unit to the
REMOTE IN/SYNC IN
of the next. This
connection also carries the word clock between the
DTRS units. Slave units will automatically take their
clock through this, as shown by the front panel
CLOCK
indicators, neither of which will be lit.
There are exceptional circumstances when indepen-
dent clocks may be necessary. See 8.6, “Individual
clock mode” for details.
NOTE
Always make and break all connections with the
power to all units in the chain turned OFF.
8.2 Machine ID and master/slave
settings
Each DTRS unit in the chain must be assigned a
machine ID. The unit at the head of the chain (the
master) should have ID number 1.
Though not strictly necessary, we suggest that IDs
are assigned in a consecutive sequential order from
the head of the chain.
8.2.1 Differences between DTRS models
The DA-78HR, DA-98 and DA-38 use machine IDs
that are set by software (the machine must be turned
on for the ID to be set). The values for the IDs of
these models start at “1” and go up to “16”.
The switch on the back of the DA-88 is only opera-
tive when the unit is turned off. It is marked from “0”
through “F”.
When including DA-88s and DA-78HRs in the same
chain, add 1 to the number shown on the DA-88’s
rear panel machine ID switch to make the DA-88’s
machine ID match the series of the DA-78HR (and
DA-98 and DA-38) IDs. Any DA-88 whose Machine
ID is not 1 (the switch has been set to a value other
than 0) will show its Slave ID briefly at power-on.
Therefore, for a chain of three units; a DA-78HR as
master, with a DA-98 and DA-88 as slaves, the
machines’ IDs should be set as follows:
It therefore makes sense to set the machine IDs of all
DA-88s in the chain first, immediately after connec-
tions have been made with the power off, and then
turn on power to all units before setting the machine
IDs of all DA-78HRs, DA-98s and DA-38s in the
chain.
NOTE
When you set the machine IDs, you can set the ID of
any machine first, but we recommend doing this in a
Unit
ID as shown
“Real” ID
How the ID is
set
Power on or off
when ID is set
DA-78HR 1 1 Tape counter
menu system
ON
DA-98 2 2 Menu system
ON
DA-88 2 3 Rotary switch on
rear panel
OFF
- Digital Multitrack Recorder 1
- Important Safety Precautions 2
- GROUNDING CONDUCTORS 3
- Table of Contents 4
- 1.1 Unpacking 7
- 1.2 Features 7
- 1.3 Using this manual 7
- 1.4 Precautions and 8
- — I MPOR TANT 10
- TASCAM DA-78HR 11
- —I MPORTANT 13
- 2.3 System control keys 14
- 2.4 Track controls 15
- 2.5 Rear panel features 15
- 3 - Connections 17
- 4 - Menu interface, etc 20
- 5 - Basic operations 27
- 6 - Monitoring 36
- 7 - Advanced operations 38
- 8.3 Machine offset 48
- Backing music 49
- 8.4 Digital dubbing 50
- 8.5 Synchronized formatting 50
- 8.6 Individual clock mode 51
- 8.7 Error messages 51
- 9.1 ABS and timecode 52
- 9.2 Tape timecode mode 52
- 9.3 Selecting the frame mode 53
- 9.4 Timecode input and output 53
- 9.4.1 Showing input timecode 54
- 9.4.2 Timecode input timing 54
- 9.4.3 Timecode output 54
- 9.4.4 MTC output 54
- 9.5 Recording timecode 55
- 9.5.3 Generator modes 56
- 9.6 Chasing to timecode 58
- TASCAM DA-78HR 59
- 9.6.9 Rechasing timecode 60
- 10 - MIDI control 62
- 11 - Maintenance, etc 68
- (none lit) 69
- 12.2Specifications 72
- 12.2.10Power specifications 73
- 12.2.11Audio specifications 73
- Index P - S 76
- Index T - W 77
- TEAC CORPORATION 78
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