Linear Acoustic LQ-1000, User Manual

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Linear Acoustic LQ-1000 User Guide Applications and Use
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3.2 Measurement with the LQ-1000
After connecting signals to the LQ-1000 and ensuring that the clock is set appropriately
(the “double-L” symbol should not be flashing red), measurements can begin. The most
useful display is “Fullscreen Mode” where all measured details are displayed in one place.
The included 11x17 print of the menu tree will be useful to have when first venturing
through the menus of the LQ-1000, refer to
Figure 3-3
Fullscreen ITU mode display for channels 1-6
The first thing to note is signal presence on the small thumbnail meters in the upper right
of the display. Next, make sure that “Fullscreen Mode” is showing on the top of the dis-
play. If it says “Meter Options” press the Left (Back) button, then press the Up button to
return to the top which shows “Display: XXX”. The menu tree is helpful here! Then, make
sure that the desired meter is being displayed (Display: 5.1, 2.0, scope, RTA). The available
meters can be cycled through by pressing the Right (Next) button.
There are three LKFS bargraph meters A, B, and C and they have been set at the factory
to have integration times of 3 seconds, 10 seconds, and 30 seconds respectively. If having
multiple meters is distracting, they can all be set to the same value and 10 seconds is the
suggested setting.
The large numeric reading in the top right corner is LKFS meter D, and it is set to 10 sec-
ond integration by default. The bottom histogram keeps a running graph of the output of
LKFS meter D.
Input Thumbnail
Meters
1-6 7-8
Peak
Hold
Target
Level
LKFS “D”
Meter Source/
Status
Channels
LKFS A, B, C
Histogram
5 Min/Div
Peak
Ref OK
Display
Mode
Fullscreen/
Meter Options