Linear Acoustic LQ-1000 User Guide
5
Chapter 1: Introduction
The Linear Acoustic LQ-1000 Loudness Quality Monitor is an all-in-one unit that com-
bines standard ITU-R BS.1770 loudness measurement with unique display techniques to
simplify loudness measurement. Values are displayed graphically so that no interpretation
is required better ensuring that all operators will have the same high quality result.
The LQ-1000 provides the following features:
•
Triple ITU-R BS.1770 loudness meters with individual integration time adjustments
(i.e. Slow, Medium and Fast) with numeric and logical color graphic indication of re-
sults: Blue=too quiet, Green-Yellow=good (spans 15dB comfort zone), Red=too loud
•
NEW:
Simultaneous EBU R128 metering with relative gating and Loudness Range
(LRA)
•
Quad meter engines for simultaneous measurement of 5.1+2 ITU and EBU
•
NEW:
Session and 7.5 day Weekly logging with results in graphable CSV format
•
Oscilloscope and third/sixth octave real-time spectrum analyzer (RTA)
•
Standard HD/SD-SDI I/O with access to all 16 audio channels and VANC metadata
•
VGA output
•
Headphone output with plenty of level for quiet content
•
NEW:
Scaling “Apply” function allows simple gain shifting of up to +/-24dB to be
applied to input audio with safety limiter to prevent overload; automatic calculation of
target vs. measured difference then manual apply
•
Optional redundant power supplies
•
Optional built-in dual Dolby Digital/Dolby Digital Plus/Dolby E decoding
1.1
Principles of Operation
Figure 1-1 shows the internal audio path of the LQ-1000. It should be noted that this dia-
gram is a general representation of signal flow. Please consult the appropriate section of
this manual for specific functionality.
Summary of Contents for LQ-1000
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