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Embedded Audio (Option)
Introduction
The Embedded Audio option for Image Servers is available as a factory-installed option, or
as an update for certain models of Image Server already in service. Embedded audio is based on
SMPTE 272M-A. Key features include:
• Synchronous 20-bit audio at a 48K sample rate. Non-synchronous audio and other sampling
rates are not supported.
• While up to 16 channels of audio may be present in an SDI stream (arranged in 4 groups of 4
channels), the Image Server records and plays back only Group 1 audio channels (channels 1-4).
• In E-E mode, all embedded audio will pass through the Image Server unaltered.
• The user can select audio to record from either a +4 analog, AES/EBU digital, or embedded
audio source. Mix-and-match among inputs is not supported.
• Embedded audio is always included in the SDI stream on playback, and audio will
simultaneously appear on the AES/EBU or analog audio outputs, as selected by the audio card
option jumpers. When analog audio is selected, only channels 1 & 2 will be available at the
output.
• User bits in the SDI embedded audio stream are not supported.
Setup
A software key is required to enable the Embedded Audio option. When purchased as a
factory installed option, the Image Server will ship with the key already entered and the Embedded
Audio option enabled. It will also include a certificate that contains the unique key code used to
enable Embedded Audio. Store this document in a safe location for future use.
If you have purchased Embedded Audio as an add-on to an existing Image Server, or if you
need to re-enter the key code for any reason, use the following instructions to enable Embedded
Audio.
From the main Image Server GUI window, click on Configure > Options…