Even though this is a channel integer command, use of the wildcard character for the automixer 
number is not supported. 
This command is a channel integer command. See 
Section 6.3 and Section 6.2 for more information 
on this type of command. The minimum and maximum values for this command are 0 and 20, 
respectively. 
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
S01AMREFB16
Set reference bias for automixer 1 to 6 
dB. 
S01AMREFB16
S01AMREFB1?
Query current reference bias for 
automixer 1. 
S01AMREFB1x , where x is between 0 and 
20 depending on the current setting of the 
reference bias for automixer 1. 
8.29. AMREFE -- Enable Automixer Reference for Specified 
Automixer
This command enables, disables, or queries the automixer referece feature for the specified 
automixer. When enabled, the automixer reference feature uses the AEC reference to prevent local 
microphones from gating on audio from the remote side. The AMREFE command controls the enabled 
status of this feature. The 
AMREFB command can be used to bias the AEC reference signal to make 
the automixer even less likely to gate on remote audio. 
The first argument in the command specifies the automixer number (always 1 on the EF2211) and the 
second argument specifies whether automixer reference mode should be enabled, disabled, toggled, 
or queried. 
Even though this is a channel boolean command, use of the wildcard character for the automixer 
number is not supported. 
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
S01AMREFE10
Disable automixer reference mode for 
Automixer 1. 
S01AMREFE10