Tascam DA-98, Руководство пользователя

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Section 9 – Synchronization with other DTRS units
06/97 – 1.00 – 9-1
9 – Synchronization with other
DTRS units
This section describes the techniques and methods
to be followed when the DA-98 is linked to other
DTRS units (e.g. TASCAM DA-38, DA-88 and of
course other DA-98 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-98, use the DA-98 as the master
unit and the other units as slave units.
9.1 Synchronization
connections
As described in 4.4.1, “Multiple DTRS units”, the
cable to be used when connecting the DA-98 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.
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
[44] of
one unit to the
REMOTE IN/SYNC IN
[43] of the
next.
You do not need to change the
CLOCK
setting
from
INT
[30] or to connect the
WORD SYNC
connectors [39].
9.2 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.
9.2.1 Differences between DTRS models
The DA-98 and DA-38 both 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 oper-
ative when the unit is turned off. It is marked from
“0” through “F”.
When including DA-88s and DA-98s 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-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-98 as
master, with a DA-88 and DA-38 as slaves, the
machines’ IDs should be set as follows:
WARNINGS
• Be sure to use only the optional PW-88S sync cables.
The use of any other cables could damage the DA-98.
• Be sure to connect the termination plug that comes with
the PW-88S cable to the last slave’s SYNC OUT con-
nector [44], 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-format-
ted tape in the master unit, and also in the slave units.
Since the DTRS system uses ABS time to achieve syn-
chronization, tapes without ABS time recorded on them
make synchronization impossible.
• To synchronize multiple DTRS units, all the tapes in
each unit must be formatted at the same sampling rate,
or synchronization is impossible.
WARNING
Always make and break all synchronization connections
with the power to all units in the chain turned OFF.
Unit
How the ID is
set
DA-98 1 1 Menu system (see
below)
ON
DA-88 1 2 Rotary switch on
rear panel
OFF