Omnia Audio Omnia.ONE User Manual
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[SB Mode] (Sideband Mode - DSB or SSB)
The normal setting for the stereo generator is the DSB setting which provides the full double-
sideband, suppressed carrier L-R signal.
The special SSB setting provides a single-sideband, suppressed carrier L-R signal that can help
reduce multipath and provide increased protection to the baseband spectrum. Please check with
your local regulatory agency before using this mode since it has not been standardized as of this
writing.
For more information please see Frank Foti’s white paper, available on our website at:
[Pilot Lvl] (19 kHz Stereo Pilot Level)
Sets the pilot injection level from 4.0% to 12.0%, in 0.1% steps, relative to 100% modulation. To
defeat the pilot, simply adjust the Pilot Injection control below 4% and the control indicates “Off”.
[Pilot Phs] (Pilot Phase)
This parameter sets the phase relationship between the 19 kHz pilot and the 38 kHz suppressed
carrier. The system default is 0.0º. The performance of the DSP based digital stereo generator is
theoretically perfect, however should the phase need adjustment in order to offset time domain
errors in the overall transmission system, the pilot phase can be adjusted ±32º, in 1º increments.
We recommend that a calibrated modulation monitor be used for this adjustment.
[Comp #1]
[Comp #2]
These composite MPX output level controls individually set the level at the two separately
buffered rear-panel composite outputs over a range of 0 to 10 volts in precise 0.05v increments.
Rotate the jog-wheel to select the desired output, click and rotate to adjust the modulation level for
each composite output. Once the desired peak modulation level is displayed, click the jog-wheel to
set the level and return to the Adjust SG menu.
<-Exit
Click on this option to return to the Stereo Generator submenu.
[SCA Input Gain] (Control On Rear Panel)
The SCA Input Gain control is an analog trimpot and does not appear in the menu. This trimpot is located
just above the SCA Input BNC jack on the rear panel. A small flat-blade screwdriver will be needed to
adjust it.
Signals input to the SCA jack are simply mixed into both composite outputs through the Gain trimpot.
The gain range is from 0.034 (-29dB) to 1.35 (+2.6dB). At the lowest gain setting, you can feed it a 10V
SCA signal and get 8.6% injection on a 3.6V composite output setting. At the highest gain setting, you can
feed it a 0.25V SCA signal and get 8.6% injection on a 3.6V composite output setting. (The composite +
9% pilot should be 3.6 Vp-p in these cases. The SCA adds to this, making the total higher and the SCA
8.6% of the total).