User manual

2 DUA II User Manual © 2001 Merging Technologies
Chapter 2 – The Front Panel
MONITOR OUTPUTS
LEFT RIGHT
PHONES
VOLUME
MONITOR
SAMPLE RATE
7/85/6
3/4
1/2
32
44.1 48
REMOTE
POWER
dua II AUDIO INTERFACE
SYNCHRONIZATION
INT
ODI
AES
WCLK
Synchronization
Selection & Status
Sample Rate
Selection & Status
Monitoring
Selection & Status
Monitoring
Line Output
Monitoring
Phones Output
Monitoring
Volume Control
Synchronization Selector and Status
SYNCHRONIZATION
INT
ODI
AES
WCLK
The DUA II can operate in many different synchronization modes. It can synchronize to its internal clock or to a wide
range of industry standard external sources. Pressing the SYNCHRONIZATION button allows the selection of the
desired synchronization mode.
Possible Synchronization modes
• INT: DUA II synchronizes and locks to its internal clock.
• ODI: (Default) DUA II synchronizes to the optical input (ADAT). If no valid sync signal is present at the optical
input (when the ODI mode is selected), the ODI LED will light on RED. Once a valid sync signal has been
detected, the ODI LED will light on GREEN. If the sample rate of the DUA II and the ADAT signal are
identical, the selected sample rate LED will light on GREEN. The DUA II is now locked and synchronized to the
incoming ADAT signal.
• AES: DUA II synchronizes to an AES/EBU signal.
There are 4 AES/EBU sync modes. You can see which mode is selected by pressing the SYNCHRONIZATION
button for more than 1 second. The mode is then displayed in GREEN on RED background on the monitor LEDs
as follow:
MON LED AES/EBU sync mode
MON 1/2 AUTO DETECT
MON 3/4 AES/EBU Ref. Input
MON 5/6 AES/EBU 5/6 Input
MON 7/8 AES/EBU 7/8 Input
While in AUTO mode, the DUA II automatically detects and switches to a valid AES/EBU sync source.
In this mode, the LED MON 1/2 is light on GREEN, indicating the AUTO mode, and the automatically selected
input is indicated on the other MON LEDS in GREEN as well.
Press the MONITOR button to change the AES/EBU sync source mode.
Press the SYNCHRONIZATION button to save changes and return to the normal operation mode.
If no valid sync signal is present at the selected AES/EBU input (when the AES mode is selected), the AES LED
will light on RED. Once a valid AES sync signal has been detected, the AES LED will light on GREEN. If the
sample rate of the DUA II and the AES signal are identical, the selected sample rate LED will light on GREEN.
The DUA II is now locked and synchronized to the incoming AES signal.