Tascam DA-98HR User Manual download pdf (Page 31)

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TASCAM DA-98HR 31

6 – Basic Operations

This section explains some of the basic operations

using the DA-98HR. Section 7, “Advanced opera-

tions” describes more advanced operations.

Most operations on a DA-98HR are similar to those

on a traditional analog multitrack recorder, but we

suggest that you read this section and the next to

learn about the features of the DA-98HR.

6.1 Word sync settings

The DA-98HR is capable of accepting word sync

clock data from a variety of sources. It is essential

that in a digital audio setup, all devices share the

same word sync clock, otherwise damage may be

caused to monitoring equipment, etc.

The different clock sources available, as shown on

the front panel indicators are:

6.1.1 Selecting the word sync clock

1 Press the CLOCK key j so that the appropri-

ate indicator lights.

NOTE

In the case of a setup where the DA-98HR is the only digi-

tal device in the system (connected to the analog mixing

console through the optional IF-AD98HR analog I/O slot

boards), you should

not

select the

SLOT

setting (this is for

optional digital I/O boards).

If a selected word sync clock source is not connected

or powered up, the clock is out of the permissible

range, or is otherwise not available for use, then the

indicator will flash, and an appropriate message will

be shown on the display.

6.1.2 Setting the AES/EBU channel for

the word sync source

When selecting the AES/EBU source for the word

sync source, please note the following:

• Even if the AES/EBU digital audio source is not

the audio source (6.3.2, “Selecting the digital

source”), the AES/EBU source can still be selected

as the word sync clock source using the

CLOCK

key.

• All AES/EBU sources must be at the same fre-

quency, etc. before they can be selected as clock

sources. An error message will be shown on screen

if they differ.

To view and change the AES/EBU source:

1 Go to menu group A, and move the cursor to

AesEbuClk. Press ENTER:

2 The current available track settings (6.2.1,

“Available tracks” are displayed, and the

appropriate signal can be chosen using the §

and ¶ keys.

In the case of dual- or quad-frequency tracks

being selected and multi-line being selected

(3.1.3, “Digital audio connections (using AES/

EBU)”), the AES/EBU channels are “bundled”

so that one set of channels can act as a clock

source.

3 Press the

CLOCK key until the AES/EBU indi-

cator lights

If the selected input is invalid or disconnected,

an appropriate message is shown and output

signals are muted. Press the

ESCAPE key to

reset the error message.

6.1.3 Clock range with slot board

When the IF-AN98HR optional slot boards are fitted,

it is possible to select the internal PLL clock source

(and hence the clock range) for these boards.

1 Go to menu group D, move the cursor to

IoCkRange, and press ENTER:

2 Use the § and ¶ keys to select between

Wide (an LC oscillator) and Narrow (a

crystal oscillator) as the PLL clock source for

the boards.

Indicator Meaning

INT

The DA-98HR acts as a word clock sync master,

using its internal clock

WORD

The

WORD SYNC IN

BNC connector is used

as the word clock source

VIDEO

The word clock source is derived from the signal at

the

VIDEO IN

connector

AES/EBU

One of the

AES/EBU

digital audio sources is

used as the word sync clock source

SLOT

If an optional audio interface board has been fitted,

this may be used as a word sync clock source

AES/EBU Clock

192k 96k 48k

024

ch 2

IO Board Clk Range

Narrow

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 99 100

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Tascam DA-98HR User Manual Page 31

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