HDA800(V2) Serial Protocol, Version 1.3, 9/12/13
39
Basic Control
Where:
@
zone
= One (or more) zones to be mapped.
mute
= Mute setting (0=Unmuted, 1=Muted).
ch
= Channel bitmap.
‘HMZ’ Examples
The ‘HMZ’ command in its simplest form:
^HMZ @1,@3,1$
mutes all channels of the zones ‘1’ and ‘3’. You can also mute/unmute multiple zones using a single
command. For instance:
^HMZ @1,1,@3,@5,0$
mutes zone ‘1’, and unmutes zones ‘3’ and ‘5’.
By appending a ‘.’ and a channel bitmap to the ‘HMZ’ command, the command can also be used to
mute individual channels. This is the proper way to mute an audio channel while allowing video to
pass unobstructed. For instance to mute the HDMI audio sound, while leaving the video alone:
^HMZ.8 @1,1
mutes the digital and along audio on zone ‘1’. The HDMI video remains unchanged.
The channel (the ‘.8’ in the above example) is a bitmapped number that indicates which channel or
channels are to be affected by the command.
The channels are mapped as:
1 = HDMI video
8 = HDMI audio
By adding together the above numbers, you can switch any combination of channels without affecting
the unselected channels.
For instance:
^HMZ.1 @3,1$
would mute (blank) only the HDMI video on zone ‘3’.
To mute both the HDMI video and HDMI audio channels, add the channel numbers together: 9 = 1 + 2,
and use that as the channel number:
^HMZ.9 @2,@3,1$
This would mute the HDMI video and HDMI audio channels on zones ‘2’ and ‘3’.
‘HMZ’ Query Examples
There are two forms of the query response string, depending upon whether any channel breakaway
options are in affect.
For instance if HDMI video, digital audio, and HDMI audio, are all muted on zone ‘1’, then:
^HMZ @1,?$
>-
Query request sent to the A/V switch
would respond with:
^+$
<-
Indicates no errors in the command
^=HMZ @001,1
<-
Video and all audio channels are muted on zone ’3’
Summary of Contents for HDA800
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