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Switch User Guide, Version 0.16, 5/13/16
Using The Switch
The AUDIO Sources
These values assume the XIO bit has been set in the ‘XS’ command. By setting that bit, all supported
Zektor switches will use the same number system, as described here.
If a switch does not have as many sources as described, any unused inputs will be muted.
For instance if you try to set one of our 8x8 switches, to analog source 16, the zone will muted, and the
command will respond with a source of ‘0’.
The AUDIO Switch’s Extended I/O Sources
The AUDIO switch has 128 possible sources of the audio:
1-32
These sources use the analog inputs 1-9 labeled on the back of the switch, input 9 is the
auxiliary analog input.
33-64
These sources are the coax inputs, input 18 is the auxiliary coax input.
65-80
These sources are the optical inputs, input 27 is the auxiliary optical input.
81-96
These sources are the audio extracted from the HDMI inputs 1-6.
97-112 These sources are the “audio return” inputs on the HDMI receivers.
113-128These sources are the audio extracted from the HDMI outputs. (This is the same audio that
would be playing on a TV connected to the HDMI output.)
Audio source ‘0’, is the “disconnect” source. When source ‘0’ is selected, there will be no audio, and
the zone will go silent.
Audio Conversions
When sending an analog zone is set to a digital audio source, the Switch performs automatic conver-
sion of the analog and stereo PCM digital signals.
If a Dolby Digital or DTS Audio, or some other form of encoded bitstream audio is present on the dig-
ital inputs, then the analog zone will mute. The Switch cannot down mix Dolby Digital audio.
