Omnia .9 Installation And Operation Manual page 76

MPX I nput M enu
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 S ystem M enu), t hey c an a lso b e u sed t o p ut s ome o f O mnia.9's b uilt-­‐in t ools t o g ood u se.
For e xample, y ou m ay w ish t o c onnect a m odulation m onitor o r a t uner w ith a n M PX o utput t o o ne
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 p hase l inear r eference q uality s tereo d ecoder.
The Input Gain slider sets the input level of each of the two MPX Inputs in a range from -­‐
12dB t o + 18dB i n 1 /10
The Pre-­‐emphasis control should be set to match the pre-­‐emphasis of the input signal,
either 5 0 o r 7 5us.
The A dd D elay c ontrol a llows y ou t o d elay t he a udio c oming i n f rom t he e xternal M PX I nput
to m atch t hat o f t he O mnia.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 a nd a djust f or v isual f latness o n t he o scilloscope. Y ou c an a lso t une i n y our o wn
station t o v erify S TL a nd e xciter p erformance.
Loudness M eters M enu
The L oudness M eters M enu l ets y ou c hoose w hich i nputs a nd o utputs a re d isplayed i n t he l oudness
meters d isplay.
Settings M enu
The S ettings m enu o ffers t he a bility t o m onitor M PX O utput, L /R O utput, a nd i f e nabled, b oth t he
MPX I nput 1 a nd M PX I nput 2 .
Display S ettings M enu
The D isplay S ettings m enu i s t he s ame m enu f ound i n t he P rocessing M enu o f t he P rocessing
section, a nd i s d uplicated h ere f or c onvenience t o q uickly s et u p a d isplay w indow f or t he l oudness
meters.
th
d B i ncrements.
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