4.3 LoadSmart
LoadSmart is Lab.gruppen’s exclusive system for
verifying the load connected to each output channel
of the PLM. LoadSmart is set up and run from the
Load tab. The operator can specify the number of
cabinets of each type that should be connected to
each power channel, and also include information
about cable lengths, etc. LoadSmart then evaluates
the load characteristics on each PLM power output
channel either confirms them as correct or reports
that they are exhibiting anomalies. Thus the user can
be confident that a large and complex loudspeaker
array has been set up and connected correctly before
audio is run.
4.4 SpeakerSafe
SpeakerSafe, also accessed from the Load tab, is
an exclusive Lab.gruppen real-time performance
monitoring and logging feature.
SpeakerSafe constantly monitors the characteristics
of the load connected to each PLM output while audio
is running. Operation is initiated from the Load tab
following a successful LoadSmart verification.
The loudspeaker Fingerprint is again used to calculate
operating parameters such as loudspeaker magnet
and voice coil temperatures. Numerical and graphic
displays, along with warning alerts (when warranted),
allow the operator to detect any excessive or anomalous
conditions before serious problems can develop.
This chapter describes those parts of the DLC PLM
Edition software application which are specific to the
PLM.
4.1 Monitoring & Control
Many of the PLM’s basic operating parameters are
available in the Dolby Lake Controller PLM Edition
software as well as via the PLM’s front panel. These
include, for example, gain adjustment, monitoring of
output levels and temperatures, and power control.
Basic per-channel operating parameters and gain
adjustments are presented in the Status tab, with
certain adjustments and power control accessed via
the Control tab. The History and Events tabs provide
the user with both a real-time log and a graphical
representation of the PLM’s performance.
4.2 LoadLibrary
Unlike the standard Dolby Lake Controller loudspeaker
presets (Module files), the Dolby Lake Controller PLM
Edition also includes a set of enhanced Module files
specifically for use with the PLM Series.
Termed the LoadLibrary, these supplementary PLM
Module files incorporate both the standard Dolby DSP
parameters as well as data relating specifically to the
PLMs. LoadLibrary Module files provide parameter
settings for the PLM’s Amplifier Gain and ISVPL limiter.
Additionally, LoadLibrary loudspeaker types also may
include data pertaining to the electrical characteristics
of that particular loudspeaker.
The data set relating to the loudspeaker’s electrical
characteristics is used to enable load verification
(LoadSmart) and monitoring facilities (SpeakerSafe)
to be performed on the PLM. This data set is termed a
Fingerprint. When a PLM-specific loudspeaker type is
loaded, its Fingerprint load characteristics are included.
These load characteristics are stored in a file with a
“.mdl” suffix and are loaded simultaneously with the
module file.
LoadLibrary Modules and standard Dolby Module files
are cross-compatible, although when a LoadLibrary
Module is loaded into a Dolby product the extra data
within it is ignored.
4 reFerence
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