1 General
1.1 Description
The AMX-172p is a compact stand alone AES/EBU multiplexer designed to embed two 20-bit
digital audio signals into a single SMPTE 259M serial component digital video signal. The AMX-
172p has an automatic 525/625 input detection. The AMX-172p is available in both
75Ω unbalanced (AMX-172p/75) and 110Ω balanced (AMX-172p/110) AES/EBU input version.
The AMX-172p can insert any of the four embedded audio groups in a serial 4:2:2 video stream
and provides a re-clocked serial digital input. The low cost and compact packaging of the AMX-
172p make it ideal for standalone application.
Figure 1 : AMX-172p functional diagrams
1.2 Features
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Serial 4:2:2 input
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Dual AES/EBU inputs
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Up to 20-bit digital audio
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Serial 4:2:2 output
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Dolby E compatible
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Audio group selectable
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Non selected groups are passed-through or suppressed
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Automatic channel mute on absence of audio (ex: if audio present on AES1 and absent in
AES2, only AES2 is muted)
•
Stand alone mounting
•
U, V and C bit pass-through
Guide to installation & Operation
4
AMX-172p