RTW SurroundControl 31960 Series, Manual, Page: 367 / 430

EN-151 9 | Menu | 9.4 | Input/Output Routing: The Global Routing Settings
EN
SurroundControl 31900/31960 Series
9.4.2.11 | Parameters available in the Sum Group (Loudness mode)
The Sum Group , located to the right of the channel bargraphs
in the Program Meter display, contains up to three bargraphs
showing the summed loudness of all channels in the Channel
Group:
• Momentary (M) bargraph
The „Momentary“ bargraph, labelled M by default, uses a
sliding 400 ms time window.
• Short-Term (S) bargraph
The „short-term“ bargraph, labelled S by default, uses a
sliding 3 s time window.
• Integrated (I) bargraph
The „Integrated“ bargraph, labelled I by default, uses
gating conforming to ITU-R BS.1770-2. It measures the
prgogram between „Start“ and „Stop“ commands issued
by the user.
After having selected one the loudness options in the Program
Meter combo box on the Key 1 to Key 7 menu pages and
selecting the PPM + Loudness Settings button, selecting the
Sum Group button will display the Sum Group menu page.
NOTE - The parameters on this menu page are not
only used to confi gure the summing loudness bargraphs M ,
S and I , but also the single channel loudness bargraphs dis-
played in the Channel Group .
NOTE - After one of the loudness modes ITU
BS.1771 , EBU R128 , ATSC A/85 , or ARIB was selected,
most of the loudness parameters will be fi xed to the values
proposed in the corresponding standard. However, after the
Custom mode was selected (see fi gure above), all loudness
parameters are available for individual editing.