Tascam DA-98HR User Manual download pdf (Page 54)

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8 – DTRS synchronization–Digital dubbing

54 TASCAM DA-98HR

8.5 Digital dubbing

When you copy tapes between DTRS units in the

digital domain, there is no loss of quality. A “work-

tape” or copy is therefore indistinguishable from the

original (also bear in mind that the media used by

DTRS units is relatively low-cost, so making back-

ups is in all ways a painless procedure).

You may want to exploit these features of the DTRS

system to make archive copies, and “safety copies”

of important material (see 1.5, “Recommended

tapes” for our suggestions on tape use).

NOTE

When you copy tracks from DA-88 units, the input word

length should be set to 16 bits.

You cannot copy from a source tape with one sampling fre-

quency to a destination DTRS which does not support

high-frequency sampling frequencies, or from an HR tape

to a DTRS unit set to normal resolution (this always means

the DA-88, DA-38 and DA-98 units).

1 With the power to all units turned OFF, make

the synchronization connections as described

in 8.1, “Synchronization connections”, remem-

bering to terminate the slave unit.

2 Connect the

DIGITAL I/O u of the master unit

(source) to the

TDIF-1 (DIGITAL I/O) of the slave

(target).

Use only approved cables (PW-88D or PW-

88DL) to connect the DTRS units. Use of any

other cables can cause damage to the units and

will invalidate the warranties.

3 Turn on both units. Make sure the machines’

IDs are correctly set (8.2.2, “Setting machine

ID”).

4 Insert the master tape into the source master

and a blank tape, formatted with the same

sampling frequency and bit resolution as the

master tape, into the target slave.

5 Select the digital inputs on the target slave (this

differs between models—for the DA-98HR, see

6.3.3, “Selecting input sources”).

6 Put the target slave machine into

CHASE mode

(8.2.3, “Master/slave settings (CHASE

mode)”).

7 Locate the master tape to a point before the

material you want to duplicate. The target

slave also locates since it is in CHASE mode.

8 Arm all tracks (

REC FUNCTION) on the target

slave machine and make sure that all REC

FUNCTION

switches on the source master are

turned OFF (press the

ALL SAFE key to make

sure).

NOTE

If any

REC FUNCTION

switches on the source master

are turned on, you will erase your master tape! You may

want to use the tape’s write-protect tab to prevent any such

accidents.

9 On the master machine, hold down RECORD

and press

PLAY.

No recording will take place on the source mas-

ter, but the tracks will be recorded digitally on

a one-to-one basis to the target slave.

There is no need to carry out any special pre-

dubbing procedure such as timing the digital

output, as the digital and analog outputs are

separate.

You can use the Track Copy (DA-38, DA-98) or

the input patchbay functions (DA-98HR or

DA-78HR) on the target slave machine to

transfer tracks from the source master tape to

different tracks on the target slave. Note, how-

ever, that you cannot combine tracks by this

method.

8.5.1 Synchronized formatting

When several DTRS units are connected together,

you can format several tapes simultaneously, using

one machine as the master. This can be a very conve-

nient way of saving time and effort.

1 Make sure that all machines have their IDs set,

that they are connected together using the

SYNC connections, as described above, and

that the last unit in the chain is terminated.

SOURCE

MASTER

TARGET

SLAVE

PW-88D or PW-88DL

(digital I/O cable)

PW-88S

(sync cable)

Terminator

plug

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Tascam DA-98HR User Manual Page 54

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