OPTICOM OPERA - V 3.5 User Manual page 43

C H A P T E R 4 : G E T T I N G
F R A M E W O R K
The nominal analog signal levels are compatible with either professional or
consumer equipment. Use the Trim control on the LynxONE Mixer application
to select +4dBu for balanced professional devices or –10dBV for balanced or
unbalanced consumer devices. The Trim control affects both inputs and
outputs. On request special adapter kits are available as an option for interfacing
to consumer devices like e.g PC soundcards (3.5mm phone jack or cinch),
headset (2.5mm phone jack) or handset (RJ22) connectors.
Note:
Please note that with 16 dB of headroom, the LynxONE's analog
outputs are capable of delivering +20 dBu signal levels. It is
important to verify that the equipment is capable of handling these
signal levels in order to prevent clipping or possible damage.
The XLR connectors on the Audio Cable, labelled DIGITAL IN and DIGITAL
OUT are used for AES/EBU and S/PDIF digital audio connections. Connect
AES/EBU devices directly and select AES/EBU Digital Format in the LynxONE
mixer application. Connect to S/PDIF devices using XLR-to-RCA adapters. Select
S/P DIF Digital Format in the LynxONE mixer application.
The BNC connectors on the MIDI/Clock Cable, labelled CLOCK IN and
CLOCK OUT are used to synchronize the LynxONE with external equipment.
The connectors support TTL level signals and should be connected with 75-
ohm coaxial cable. Connect the CLOCK IN connector to the clock output of an
external device and select External as the Sample Clock Source in the LynxONE
mixer. Adjust the clock reference to match the incoming clock type. CLOCK
OUT is a word clock that tracks the sample rate of the LynxONE. Connect this
output to the word clock input of an external device. [LYNX00]
The MIDI connectors are not used with OPERA™.
Before performing measurements with the LynxONE audio interface board,
make some settings in the mixer program of the audio board. If there is no
symbol for the LynxONE mixer available in your Windows NT systray, first start
the application by clicking on: Start|Programs|Lynx One|Lynx One Mixer.
Otherwise double click on the systray icon.
The audio board labeled "
board. By convention use this as the input of the reference signal. The audio
board labeled " Audio 2 Slave (Test)
to board number two. When working with digital (AES-EBU) signals, the two
signals must be synchronized to the same word clock before they are fed as
input to the OPERA™ system.
The LynxONE mixer application dialog displays the settings for one of the two
boards. To switch between the boards, use the menu Mixer.
T O K N O W T H E
Audio 1 Master (Ref)
" is the slave board. Connect the test signal
37
O P E R A ™
" is configured as the master
LynxONE Audio
Interface - Setup
of the Audio
Board Mixer