TASCAM X-48MKII
37
TDIF Port 1
TDIF Port 1 clocks the X-48MKII from the digital audio
signal coming into the TDIF Digital Input channels 1-8.
If you have digital audio option cards installed (IF-AD24(X)
/ IF-AE24(X) ), those will show up as an available clock
source as ‘
ADAT Card
’ / ‘
AES/EBU Card
’.
When in doubt, use
Word Clock
as the reference source. To
change the clock source:
Mouse/Keyboard Operation
• Click the
Windows
menu and select the
Settings
window.
• Click the
Sync
tab and click the
Source
item in the
Sample Clock
section.
Choose your desired master clock from the list.
Front Panel Operation
1 Press the SYNC button. Press the
5
/
b
buttons to
select
Sample Clock Source
and press CHNG.
2 Select a clock source from the list using the
5
/
b
buttons and press Enter.
BNC Clock In/BNC Clock Out
These parameters allow the word clock signal input or
output to be multiplied or divided by 2, or used as-is. This
allows, for example, a 48 kHz word clock generator to be
used when recording at 96 kHz, or allows 48k and 96k
devices to be used at the same time.
To change these settings:
Mouse/Keyboard Operation
1 Click the
Windows
menu and select the
Settings
window.
2 Click the
Sync
tab and click the
BNC In
or
BNC Out
item in the
Sample Clock
section. Choose a setting
from the list.
Front Panel Operation
1 Press the SYNC button. Press the
5
/
b
buttons to
select
BNC Clock In
or
BNC Clock Out
and
press CHNG.
2 Use the
5
/
b
buttons to select a setting and
press Enter.
BNC Word Clock Output Polarity
This setting allows the Word Clock signal outphase to be
reversed. This may be necessary in large systems or with
long cable runs.
Mouse/Keyboard Operation
1 Click the
Windows
menu and select the
Settings
window.
2 Click on the
Sync
tab and check the box labeled
Invert Word Out Polarity
.
Front Panel Operation
1 Press the SYNC button. Press the
5
/
b
buttons to
select
Word Out Polarity
and press CHNG.
2 Use the
5
/
b
buttons to select either
Normal
or
Inverted
and press Enter.
Video Clock Frame-Edge Resolve
Video Clock in the X-48MKII can be used to define the
frame edge of incoming and generated timecode for
stability and repeatability. (But not as a sample clock
source, see ”Requirements” on page 35.)
To enable video clock:
Mouse/Keyboard Operation
1 Click the
Windows
menu, select the
Settings
window
and click the
Sync
tab.
2 Check the box labeled
Resolve to Video In
in the
Time
Code
area.
Front Panel Operation
1 Press the SYNC button. Press the
5
/
b
buttons to
select
Resolve to Video In
and press CHNG.
2 Press the
5
/
b
buttons to select
On
and press
Enter.
Frame Rate
The X-48MKII syncs to any frame rate of SMPTE timecode:
30-frame non-drop (30 NDF)
•
is occasionally used in
music studios to sync console automation to a tape
machine (2” reel-to-reel tape may be striped with this
format)
30-frame drop (30 Drop)
•
is rarely used
29.97 non-drop (29.97 NDF)
•
is the standard for non-
broadcast post-production in the U.S.
5 – Recorder
