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3 - Connections
TASCAM DA-78HR
19
apart from the audio connections (either digital or
analog).
If more than one DTRS unit is to be used, the first
unit in the chain must have its Machine ID set to “1”,
(“0” in the case of DA-88s) and subsequent units
must have their IDs set in order with no gaps in the
numbering sequence. Note that the diagram below
does not show any audio connections.
See 8.2, “Machine ID and master/slave settings” for
details of setting the Machine ID using the menu
system
NOTE
The last unit in the chain must be terminated (a
TASCAM termination plug must be pl ugged into the
SYNC OUT
of the last machine in the chain. Once
again, only use TASCAM cables for connection of
equipment to and from the DA-78HR.
3.3. 4 “I ndirect” word sync
As mentioned earlier, there is usually no need to use
a word clock when connecting DTRS units together.
There is, however, an occasion when it is necessary
to carry external word sync between DTRS units.
This is when a slave DTRS unit is recording digitally
from another digital audio device:
Though the slave will receive its word clock from the
master unit, the master itself must receive its word
clock from the other digital audi o device.
In this case, the master unit will have its clock source
set to
WORD
, and the slave will receive its clock
from the master unit through the
SYNC IN
.
Machine ID 1
(master)
Machine ID 2
(slave 1)
Machine ID 3
(slave 2)
Termination
plug
PW-88S PW-88S
Machine ID 1
(master, but
CLOCK set to
WORD)
Machine ID 2
(slave 1)
Termination
plug
PW-88S
IF-88SD
TDIF-1 digital
audio
Digital SDIF-2
device
SDIF-2
digital aud io
Word clock signal