ruby User Manual
Version: 6.6.0/1
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6. Operation
6.11
Metering
6.11.1 Output Metering
There is no integrated metering on the Central Module, and so all output metering must be configured on
VisTool.
The example shown below includes two output meters for follow MONITOR and PGM 1:
·
MONITOR
- meters the Control Room monitor source, before the CR volume and mute/dim.
·
PGM 1
-
always
meters the PGM 1 output.
Both meters are stereo PPMs (Peak Program Meters) and use a digital scale relative to 0dBFS. The PGM 1
meter also includes measurements for loudness.
6.11.2 Loudness Metering (for PGM 1)
VisTool (Monitoring & Metering)
On VisTool, there are two loudness measurements: momentary and integrated which conform to the ITU-R
BS1770.
Momentary Loudness (Bargraph)
The blue bargraph represents the average energy of the summed component channels: left and right. The
average is measured using either a Momentary (400ms sliding window) or Short term (3s sliding window)
integration time.
The color indicates whether loudness is above or below the Target Level:
·
Light Blue
= equal to, or below, the Target Level.
·
Dark Blue
= above the Target Level.
Scale markers indicate a tolerance of +/- 1 LU/LK.
Integrated Loudness Measurement (in LUFS)
The integrated loudness measurement is controlled by the on-screen
Start
,
Stop
and
Reset
buttons. It is very
useful for measuring loudness over a longer period - for example, for the duration of the show.
The measurement is displayed in LUFS (Loudness Units Full Scale).
