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
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
A E S / E B U
C l o c k
1 9 2 k
9 6 k
4 8 k
0
2
4
c h
2
I O
B o a r d
C l k
R a n g e
N a r r o w
