Ensemble Designs 7555 HD / SD Video Processing Frame Synchronizer - Manual (Page 33)

www.ensembledesigns.com Avenue 7555, 9550, 9550-XA - Page 33
7555 HD/SD, 9550 3G/HD/SD, and 9550-XA 3G/HD/SD Video Processing Frame Synchronizers
Aud Cfg Menu
Configuring Analog Audio Outputs and LevelTrack Audio Loudness Control AGC
Software Option
Use the Aud Cfg menu to configure up to four channels of analog audio output. Analog audio goes
out through the 15-pin D connector. Digital and analog audio paths may be used simultaneously.
Important! Before you can use the 15-pin D connector for analog audio, you must first install
jumper connectors onto the 7555 board. See “Configuring the Analog Audio and Balanced Digital
Data Jumper Connectors” on page 10 for details.
For configuring digital audio output, see “Configuring Digital Audio Outputs (9615 Software Key
Option Required)” on page 43.
From the Anlg Out 1/2 drop-down control, select the pair of mixer channels that you want to send
out through analog channels 1/2. Select the pair of mixer channels that you want to send out through
analog channels 3/4 from the Anlg Out 3/4 drop-down control.
• Anlg Ref Level – Set the Analog Reference Level from -10 dB to +4 dB for the analog audio
output.
• Dig Ref Level – Digital Audio Reference Level. Applies to AES digital. -20dBFS or -18dBFS.
• Audio Delay – Audio Delay can be adjusted from 0 to 1000 milliseconds (mSec).
Meter Mode
Select between LKFS and dBFS. This selection determines the method by which the audio is analyzed
and measured, and will impact how Audio AGC behaves.
• LKFS – LKFS (Loudness K-weighted relative to Full Scale) is a loudness amplitude level based on
the ITU-R BS.1770 Loudness Measurement Method. It is a scale for audio measurement similar to
VU or Peak, but rather than measuring gain, it measures perceived loudness. Based on a complex
algorithm, this method takes into account audio processing that increases perceived loudness
without increasing gain. LKFS is the measurement method required to comply with the
Calm Act.
• dBFS – dBFS (Decibels relative to Full Scale) is a more traditional method used for measuring audio
volume. For more information on decibels and dBFS, please refer to the “Glossary” on page 61.
Meter Position
The Meter Position effects both the Final Average (yellow line) on the AGC chart and the audio input
level for the 9690 Audio Compliance and Monitoring Software. The Meter Position is factory set to
Post.
• Pre (pre-fader) – When Pre is selected, the Final Average (yellow line) on the AGC chart will
not reflect any manual adjustments made in the mixer to the gain level of the channel being
monitored. Similarly, the chart and recording in the 9690 Audio Compliance and Monitoring
Software will reflect the audio input level coming from your source prior to any gain or
attenuation being applied in the mixer.
• Post (post-fader) – When Post is selected, the Final Average (yellow line) on the AGC chart
reflects manual adjustments made in the mixer to the gain level of the channel being monitored.
Similarly, the chart and recording in the 9690 Audio Compliance and Monitoring Software