Am Phase Menu; Tx Out Menu - Omnia .9 Installation & User Manual

AM PROCESSING

AM Phase Menu

The Phase Menu contains the controls for the phase scrambler and phase rotator. These operate in the same manner as the
corresponding controls in the FM section of Omnia.9, except here, they are enabled by default.
Certain sounds with high harmonic content (such as trumpets and some synthesized sounds) are low in energy but
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contain high peaks. By slightly offsetting these harmonics, the Phase Scrambler drastically lowers the peak level, which
in turn prevents them from having to be dealt with later in the processing chain by more aggressive means like limiting or
clipping. This results in significantly less audible distortion.
The Phase Rotator helps deliver more symmetrical peaks and is particularly effective for talk formats. We recommend
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monitoring the pre-emphasized or de-emphasized output on Omnia.9's built-in oscilloscope and advance the slider just
enough to achieve symmetrical peaks.

TX Out Menu

The TX Out menu contains controls used for feeding analog AM transmitters and includes adjustments for output level, tilt,
and equalization. The resulting signal can be assigned to the Analog Outputs or any Livewire Output, by using the AM TX
Output selection in System – I/O Options – Main Outputs. Please note that it cannot be assigned to any of the AES outputs.
The TX Output Level control is the analog equivalent to the 100% Mod control in the Main AM Options menu and sets
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final output modulation level for the analog outputs. Warning messages are provided here as well, provided the AM TX
Output is assigned to an output.
The Tilt Compensation control adjusts the amount of outward tilt when viewing a 60Hz square wave from the built-in
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tone generator on an external oscilloscope fed from the transmitter's RF sample output. This control is set to "Off" by
default. Typically, more positive (outward) tilt will be required which can be achieved by sliding the control to the right,
though it is possible to achieve more negative (inward) tilt by moving the control to the left if needed.
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