Omnia-6ex Use and Operation Manual – V: 1.20
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memory card. During system power-up, the front panel LCD screens display several status screens while the
operating software and DSP code is loaded. Once the main Omnia-6EX Main Menu is shown on the right screen,
and the Meter Screen is shown on the left display, the unit is ready for use.
Rear Panel Connections
Audio Inputs—Analog & Digital (Female XLR)
Balanced XLR-type connectors are used as input connectors for both the analog and AES/EBU digital audio. Both
analog and digital input sources may be connected simultaneously, however, only the input source that has been set
in the Input menu is active. Analog/Digital Input source selection is done through the Input Source software
parameter setting in the Input Menu.
The stereo analog inputs are designed for standard +4dBu balanced signals. Pin 2 is Hot. The digital AES/EBU
inputs (IN and EXT. SYNC) accept any sampling rate between 32kHz and 96kHz. No user adjustment is necessary
on the AES input since a high-quality sample rate converter is built into the unit. Individual channel gain and level
setting for both analog and digital is done using the Input Gain software parameter settings in the Input Menu.
A Note About Relative Phase: If the relative phase of your installation (including the Omnia-6EX) differs from
that of your existing system, your announcers may feel that they sound “weird” in their headphones. If this occurs,
then the relative phase of the processor is 180 degrees from what your air talent is used to. To remedy this, you can
either reverse the polarity of both of the analog inputs or change the Invert Both software parameter setting in the
Omnia-6EX Input Menu.
Audio Outputs—Analog & Digital (Male XLR)
Individual Left and Right analog outputs are available on two male XLR jacks. There is also an AES/EBU digital
output. (Two on EX and Exi units) They are user configured for the conventional FM channel and/or the HD
Radio/DAB signal paths. The digital outputs provide selectable sampling rates. The analog output is derived from a
D/A converter driven from whichever output path is desired, either FM or HD/DAB.
Note: Both the analog and digital AES/EBU outputs are always active and can be used simultaneously.
Composite Outputs (BNC) (FM Mode Only)
These two low impedance outputs (Composite 1 and Composite 2) are each capable of driving up to 100 feet of RG-
58A/U coax cable. The output levels are individually adjustable so the unit can operate as a “composite DA” to
drive a variety of equipment. The output levels and other stereo generator settings are set through software
parameters in the Encode menu. An internal jumper sets the output impedance to either 10 ohms (the factory setting)
or 75 ohms. The default setting is appropriate for the vast majority of exciter connections. However, in the event a
higher source impedance is required a jumper can be moved (one for each composite output) on the motherboard to
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