Omnia Omnia.9 - Page 76

68

MPXInputMenu
Omnia.9 provides two rearpanel MPX (composite) inputs which can be used for a variety of
purposes,includingusinganexternalRDSencoderasdescribedintheprevioussectiononRDS.If
theseMPXinputsareenabled(asdescribedintheSystemConfigMenusectionofthechapteron
theSystemMenu),theycanalsobeusedtoputsomeofOmnia.9’sbuiltintoolstogooduse.
Forexample,youmaywishtoconnectamodulationmonitororatunerwithanMPXoutputtoone
oftheinputsandtakeacloserlookatothersignalsinyourmarketontheoscilloscopeorspectrum
analyzer.Or,youcouldfeedthecompositeoutputofyourexistingprocessorintotheOmnia.9to
checkitsperformance.MPXInputs1and2areavailableaspatchpointswhichcanbeviewedon
any of Omnia.9’s instrumentations as well as auditioned through the monitor outputs using the
builtinphaselinearreferencequalitystereodecoder.
 TheInputGainslidersetstheinputlevelofeachofthetwoMPXInputsinarangefrom
12dBto+18dBin1/10
th
dBincrements.
 The Preemphasis control should be set to match the preemphasis of the input signal,
either50or75us.
 TheAddDelaycontrolallowsyoutodelaytheaudiocominginfromtheexternalMPXInput
tomatchthatoftheOmnia.9.
 Sincetheoutputsofmostmodulationmonitorsandtunershavesometiltpresent,controls
to adjust compensate for Tilt Amount and Tilt Coefficient are provided.To get a good
square wave reference, tune in a station with bassheavy programming and heavy
processingandadjustforvisualflatnessontheoscilloscope.Youcanalsotuneinyourown
stationtoverifySTLandexciterperformance.
LoudnessMetersMenu
TheLoudnessMetersMenuletsyouchoosewhichinputsandoutputsaredisplayedintheloudness
metersdisplay.
SettingsMenu
TheSettingsmenuofferstheabilitytomonitorMPXOutput,L/ROutput,andifenabled,boththe
MPXInput1andMPXInput2.
DisplaySettingsMenu
TheDisplaySettingsmenuisthesamemenufoundintheProcessingMenuoftheProcessing
section,andisduplicatedhereforconveniencetoquicklysetupadisplaywindowfortheloudness
meters.


