ClearOne AP800 - Manual (Page 16)

Installation ~ Installation 12
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To set mixer mode
1. Press the System button. Scroll through the menu until you see Mixer Mode.
2. Press Enter, then scroll through the three options.
3. Press Enter at the appropriate option to select it.
4. Repeat this process for all AP units in the G-Link network.
EC reference
Multiple units to one speaker output note: When multiple AP800 units are linked
together and are using only one output channel to drive the speaker system, this
output must be defined for the entire system as the sample reference for echo
cancellation. In other words, the output which the master unit will use as the EC
reference must be identified to the slave units via the G-Link. See page 25 for details
on echo cancellation setup for multiple units.
Errors
A synchronization error occurs when slave units are not receiving a signal from the
master unit. Meter LED “+12” will flash red and Mic LEDs “1,” “2,” and “4”
will flash green on affected slave units. The error is a result of one of two problems:
incorrect master/slave configuration or a broken G-Link connection.
If it is a master/slave configuration error, LEDs will flash on a unit that is
designated as a slave unit but does not have a master unit. To correct the problem,
make certain that Mixer Mode for the master unit is set to Master-Linked and not
to Master-Single or Dual Mixer.
If the error is in the G-Link connection, LEDs will flash on any units that are
not physically connected to the master unit. To correct the problem, check for
broken connections and reconnect the G-Links.