Multiple ADAT-XT20 Operation: Chapter 5
MAKING DIGITAL BACKUPS
XT20 tapes can be backed up for safety by copying all eight tracks to
another XT20 (or ADAT-compatible machine) via the digital bus. The
result is a perfect digital duplication of the original. ItOs a good idea to
make backups on a regular basis, whenever you finish work for the day,
or complete a project. The backup can either be sample accurate to the
time reference or not. This depends on whether or not the two machines
are synchronized together via a 9-pin connector cable. It is
recommended, however, that you do have the Sync cables connected
between the machines, as described in the earlier section entitled
Synchronizing Machines .
When making a backup, the tape you are backing up is normally
inserted into the master machine. The new blank tape you are backing
up to is inserted into one of the slave machines. This is recommended
since the slave machine comes after the master machine in the system
chain. NOTE: [TRACK COPY] is not used to make digital tape
backups from machine to machine, it copies between tracks on the same
machine.
To make a backup tape:
Connect a male/male, 9-pin D connector cable between the
[SYNC OUT] of the master XT20 and the [SYNC IN] of the slave
machine.
This synchronizes the two machines; the master XT20 becomes the
master (ID 1) and the slave machine becomes the slave (ID 2). If you
wish to make a 20-bit Type II backup, both machines must be Type II
capable with tapes formatted in 20-bit mode.
aConnect a fiber optic cable between the [DIGITAL OUT] of the
master XT20 and the [DIGITAL IN] of the slave XT20.
This routes the digital audio from the master XT20 to the slave
machine.
Connect a fiber optic cable between the [DIGITAL OUT] of the
slave XT20 and the [DIGITAL IN] of the master XT20.
This routes the digital audio back from the slave XT20 to the master
machine.
?Insert the source tape to be backed up into the master XT20.
Insert a blank or formatted tape into the slave machine. If the tape is
unformatted, you must put the slave into FORMAT mode (see earlier
section in this chapter). If the tape is only partially formatted, the
slave tape needs to be formatted at least a few seconds into the audio
section, past the LEAD and DATA sections so a FORMAT EXTEND
operation can be done.
?Press the [LOCATE 0] button.
?Press the [DIGITAL INPUT] button on both the master XT20
and the slave XT20.
The DIGITAL icon will be lit on both machines.
?Press all RECORD ENABLE buttons [1] � [8] on the slave XT20.
The RECORD LEDs for tracks 9�16 (all eight of the slave machineOs
tracks) will flash.
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