Sirius 800 Series User Manual Signal Flow Product Overview 3.1
Iss 5 Rev 7 Page 22 © 2017 SAM
3.1.7 Audio Phasing
In a synchronous system multi-channel audio passing through the router remains co-timed on
all channels of like signal format across the entire router. There are three signal formats;
embedded audio, MADI and AES. Embedded audio is further broken down into sub formats
of; SD, HD and 3G.
Router and processing delays are managed by the router so that co-timed audio entering the
router from any like format will remain co-timed on the output of the router.
The example below shows audio from various router inputs embedded on a video channel of
a video output module. The audio inputs could equally have been routed to an audio output
module and the signals would remain co-timed as shown.
3.1.8 Video Processing
Each of the AHP video input (5919) and AHP video output (5949) modules contain frame/line
synchronizers allowing video signals to be synchronised with router references. Frame or line
syncs can be offset to allow for delays later in the system.
The frame/line synchronizer is a licensed feature which must be purchased (see section 3.6
for details).
Figure 4 Example: Audio from Various Sources Embedded on a Video Output Module
Embedded (HD)
MADI
Embedded (HD)
MADI
Co-timed
Co-timed
Audio Source Output Module
AES
AES
Co-timed
Stereo
Stereo
Stereo
Stereo
Dolby E
Surround
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Track Mix
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