CHAPTER 14
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FM MENU ITUR BS.412 PROCESSING / MPX POWER LIMITING
You will notice in the FM> Processing> Load Preset Menu that the preset list has been updated to include only those specifically
designed for BS.412 use. There is also an additional Power Limit menu option.
In addition, the Processing Meters display window now includes a meter for the Power Limiter and three meters showing
output levels over 10 second, 30 second, and 60 second integration times.
A
B
A: Power Limiter Meter, B: Output Levels (10s, 30s, 60s Integration)
Controls for adjusting the Power Limiter are found in the FM> Processing> Power Limit menu.
♦ The Peak Limiter Drive control sets the amount of limiting performed by the final peak limiters and has a 12dB range and
is adjustable in one-quarter dB increments. These limiters are the same type used in the HD and Streaming cores and are
situated before pre-emphasis.
♦ The Power Limiter Drive control determines the amount of limiting performed by the MPX Power Limiter with a range
of 12dB adjustable in one-quarter dB increments.
♦ Advancing the Punch (coupled) slider (moving it to the right) increases the Power Limiter Drive while simultaneously
reducing the Peak Limiter Drive by a corresponding amount which results in a more open sound. Sliding the control to
the left decreases the Power Limiter Drive and increases the Peak Limiter Drive by a corresponding amount which results
in a more dense sound.
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