Omnia Omnia-6EX / EXi, Инструкция по установке и эксплуатации, Страница: 40 / 125

Omnia-6ex Use and Operation Manual – V: 1.20
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Output
Output Menu FM Options Menu
There are five settings under this menu item: There are four settings under this menu item:
•
Peak Output Level
•
Diversity Delay (Exi Only)
•
Set Levels
•
ITU BS-412 Multiplex Power Limiter
•
AES-1 Output Sample Rate
•
Pre-Emphasis
•
Outputs (Limiter Routing)
•
De-Emphasis
•
FM Options
Peak Output Level
The peak output level adjustment is done using the Master output control. This sets both the Left/Right outputs in
tandem. If there is a variance in output level between the Left/Right channels, the Right Trim is used to balance the
peak output levels. These level settings take place in the digital domain and before any D/A converters. Therefore,
the output level settings affect the digital (AES/EBU) outputs and the analog outputs, including the headphones (but
not the Composite MPX outputs). Conventional FM and HD/DAB levels are adjusted separately. (See Set Levels
below) The control range is from –2.0 dBu (-24 dBFS) to +22 dBu (0dBFS) peak output level in precise 0.1 dB
steps. Since the Omnia defines the absolute peak levels prior to this control, this level control is normally set to the
maximum acceptable input level, or just below it, of the device that Omnia-6 is driving (STL, transmitter, etc). No
offset for headroom in the following system is required.
Set Levels
This function determines which output the Peak Output Level controls operate. When FM Out is selected, the
controls set the conventional FM output levels. This level is also sent to the Output Bargraphs on the Left LCD
screen. When HD/DAB is selected, the adjustment controls and bargraphs are set to adjust and monitor the output of
the Look Ahead limiter.
AES-1 Sample Rate
One of four standard sample rates (32, 44.1, 48 and 96 kHz) can be selected for the AES-1 digital output. The output
sample rate can also follow the incoming sample rate on the AES input, (Sync to Input) or lock to the External AES
Sync Input when Sync to Ext if Av (available) is also selected. If the External Sync signal fails, AES-1 will revert to
the selected internal sample rate. Sync automatically returns to external as soon as a valid signal is present. Note:
The output sample rate for the AES-2 digital output is also adjustable by using hardware jumpers on the internal