Owner manual

LM5/LM5D & AM6 -TDM / 13
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OBS Indicator
Sets the conditions for the OBS indicator to light up. Turn it off, if you don’t want
warnings.
Time Reference
Time Reference can take two values: “Actual Computer Time” or “Program Time”. The
first is synchronized to the realtime clock of the computer, the latter to when a new
measure was started, i.e. when the “run” key was pressed. Note: The meter history
resets when you switch between Time Reference settings.
Radar Speed
Radar Speed controls how long time each radar revolution takes. Select from 1 minute
to 24 hours. You may “zoom” between the settings, as long as the history isn’t reset.
Pressingthe“X”key,orchangingtheTimeReference,resetsthemeteranddescriptor
history.
Radar Resolution
Sets the difference in loudness between each concentric circle in the Radar between
3 and 12 dB. Choose low numbers when targeting a platform with a low dynamic
range tolerance. You may “zoom” between the settings, as long as the history isn’t
reset.Pressingthe“X”key,orchangingtheTimeReference,resetsthemeterand
descriptor history.
Loudness Standard
TheProgramLoudnessmeasurementinLM5DisalwaysbasedontheLeq(K)weighted
model.However,sincetheintroductionin2006,theITU-RBS.1770standardhas
been updated with a relative gating function, improving the model’s cross-genre
normalization capabilities.
TheLoudnessStandardshouldthereforenormallybesetto“ITU-RBS.1770-2”for
compliance with the ITU standard, with EBU R128, with TR-B32 and with ATSC A85.
This setting applies a relative gate at -10 LU when computing the Loudness Range
number.
Twolegacysettingsarealsoprovided:“Leq(K)”,reflectingtheoriginalBS.1770
measurement without gating, and “Center of Gravity” which was available in LM5D
version 1. Center of Gravity makes use of a relative gate at -20 LU.
Only Program Loudness is influenced by the Loudness Standard setting while
Loudness Range, Momentary Loudness and Short-term loudness remain unaffected.
Note how a meter reset, flushing the loudness history, is performed when this
parameter is changed.