Sirius 800 Series User Manual
Input Modules
Modules No Longer Supplied With New Systems C.2
Iss 5 Rev 7
Page 315
© 2017 SAM
C.2.2.2
Gain Control and Phase Invert
Gain
Gain is applied to an audio input channel as Silence (mute) or in steps of 0.1dB in a range of
-72 dB to +30 dB.
Phase Invert
Phase invert will invert the audio waveform.
C.2.2.3
16 Channel Mixer
There are 16 Mixers available per video input channel and each mixer can mix up to 16
channels of audio. Each 16 channel mixer is used to mix two or more audio input channels
together to create a single mono signal that is output from the mixer.
For example, using Mixer 6 to mix the stereo pair of channels 1 and 2 would result in a single
mono signal being output from Mixer 6.
The mixing process is purely additive and the gain of signals being mixed will need to be
reduced to ensure the final mixed signal has the correct gain level.
C.2.2.4
Channel Swap (Shuffle)
The channel shuffler is used to change the channel order of one or more of the audio
channels.
C.2.2.5
5915 Connections to the Audio Crosspoints
The 5915 video input module creates two identical multiplexed audio transport streams, each
of which contains all of the audio channels on the input module (up to 768 mono channels).
One transport stream is sent to the main audio crosspoint module and a duplicate transport
stream is sent to the redundant audio crosspoint module.
