TC electronic SDN BHD LM5D Radar Detector User Manual


 
PREFERENCES PAGE
Fig 8, LM5 Prefs page.
Preferences may be stored as Presets, thereby having suitable settings for different
conditions easily at hand.
Loudness Scale
can be set to either “Loudness Units, LU” or “Loudness Full Scale,
LFS”. Because LM5 uses the BS.1770 loudness model, LFS is the same as LKFS.
When “LFS” is selected, the numbers of the outer ring of the Radar page shown in Fig
3 apply. When “LU” is selected, the outer ring “hours” are marked in LU units
instead.
0 LU Equals
sets the loudness required to obtain a 12 o’clock reading on the outer
ring, which is the same as the border between green and yellow on the Radar page. 0
LU is the reference to aim at.
Low Level Below
determines where the shift between green and blue happens in the
outer ring. It indicates to the engineer that level is now at risk of being below the
noise floor.
True Peak Indicator
sets the level at which the Peak indicator lights up.
OBS Indicator sets the conditions for the OBS indicator to light up. Turn it off, if you
don’t want warnings.
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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
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.