8.12. AMAUTO -- Select Automatic or Manual Gating for 
each Automixer Input
This command selects or queries the state of automatic or manual automixer gating thresholds for the 
specified input channel. Automatic thresholds mean that the automixer adaptively determines the 
gating thresholds based on current speech and noise levels using the gating ratio specified by the 
AMGATER command. Manual thresholds mean that the automixer uses the absolute threshold set via 
the 
AMGATET command. 
This command is a channel boolean command. See 
Section 6.3 and Section 6.1 for more information 
on this type of command. 
This command is saved to non-volatile memory only as part of a preset. The state of this command 
will be restored after power-up only if a preset is saved and that preset is set to be the power-on 
preset. 
Example Description Status Message
S01AMAUTO11
Select automatic thresholds for 
automixer gating on input channel 1. 
S01AMAUTO11
S01AMAUTO10
Select manual thresholds for automixer 
gating on input channel 1. 
S01AMAUTO10
S01AMAUTO12
Toggle between automatic and manual 
thresholds for automixer gating on 
input channel 1. 
S01AMAUTO1x , where x is 0 or 1 
depending on whether input channel 1 is 
currently set for manual or automatic 
thresholds. 
S01AMAUTO1?
Query AMAUTO state on input channel 
1. 
S01AMAUTO1x , where x is 0 or 1 
depending on whether input channel 1 is 
currently set for manual or automatic 
thresholds. 
8.13. AMBUSID -- Set Automixer Groupings for EF Bus
This command is used to assign the internal automixer to one of the EF Bus automixer groups. For 
example, consider three EF2211's, each of which has its automixer enabled for its microphone input 
(input 1). Now, if each of these EF2211's sets its automixer to have Bus ID 5, then the three 
automixers (one from each EF2211) will work as a single automixer containing 3 (3 x 1) microphones. 
Setting AMBUSID to 0 means that the specified automixer is not grouped on the bus. For compatibility 
with EF2280 and EF2241 commands, the AMBUSID command requires you to specify the automixer 
number with the command. On the EF2280 and EF2241, there are two internal automixers. However, 
the EF2211 only has one internal automixer, so 1 is always specified. 
The first argument in the AMBUSID command is the automixer number (always 1 for the EF2211) and 
the second argument is the Bus ID (0 for none, or 1 through 8). Although this command is a channel 
integer command, use of the wildcard character for the automixer number is not supported.