Cobalt Digital FUSION 3G 9985 3G_HD_SD Loudness Processor - Manual (Page 101)

9985-OM (V1.18) 9985 PRODUCT MANUAL 3-49
Operating Instructions
9985 Function Submenu List and Descriptions
Card Loudness Metering
Provides an ITU-R BS.1770-1 / ATSC A/85 Audio
Loudness measurement of two independent
5.1-channel groups (L, R, C, LFE, Ls, and Rs). If
desired, the independent meters can be set to provide
pre and post-processing assessments of the same
program material.
Note: • This function provides DashBoard loudness metering and is furnished standard with this option. OGCP-9000
Loudness Meter Option (+LM) is an OGCP-9000 Control Panel option that provides advanced loudness metering
functions such as graphing and statistics. +LM option is separate and independent of this function; refer to catalog or
website for more information.
• This function provides only loudness metering as described here; this function does not provide active loudness
correction. Selected channels are only monitored by this function, with no affect on the channels.
• Loudness Meter 1 / Meter 2 Source Channel
Selection
For Meter 1 and Meter 2, separate drop-down lists for each loudness
meter source (input) channel as listed below.
• Bus Ch1 thru Bus Ch 16
• Upmix L, R, C, LFE, Ls, Rs output channel
• Loudness Processor L, R, C, LFE, Ls, Rs output channel
• Tone 1 thru Tone 8
• Silence
Note: • Source input channels include drop-downs for L, R, C, LFE, Ls,
Rs, Aux 1, and Aux 2 channels. LFE, Aux 1, and Aux 2 channels
are not included in loudness measurements.
• On cards equipped with multiple upmixers and/or loudness
processors, drop-down choices are identified by function,
processor designator, and channel (e.g., “LP51 A Ls” denotes
5.1-channel loudness processor A, left surround (Ls) channel
output).
• Set any unused channel inputs to Silence.
• Measured Loudness Display
Dual displays for Meter 1 and Meter 2 that show respective current
aggregate ITU-R BS.1770-1 loudness for the selected monitored
channels.
Note: -inf LUFS display indicates loudness meter is not receiving any
input (for example, as in the case of wrong (muted) channels being
routed to meter instead of intended channels).
Table 3-2 9985 Function Submenu List — continued
•
•
•
In this example, 5.1-channel
selections in Meter 1 and
Meter 2 are respectively used
for loudness pre-processed
channels from a card
Upmixing function, and
loudness post-processed
channels from a card
5.1-channel loudness
processor. The respective
Measurement displays show a pre-processed short-term loudness of -11.3 LUFS, and a post-processed short-term loudness
of -23.0 LUFS, with both measurements being within reasonable ranges and as expected.