Convergent Design
14 January 2020
3
Erika User Manual
Operation of the Erika Mic System
When you first receive the Erika, please plug the Erika Mic into a USB power source using the supplied cable.
To prevent battery drain, the Erika Mic ships in a special low-power mode. Plugging the Erika Mic into a USB
power source the first time prepares it for use. You only need to perform this step once.
Erika Mic’s LED flashes Blue when charging and solid Blue when fully
charged. It will take less than 3 hours to complete a full charge. If you
wish to use it right away, there will probably be enough battery power
for many hours of operation or testing. Then charge it after using or
testing it for the first time.
Powering On – When the Erika Mic is in a face-down position, it is
muted and powered off. To power it on, pick it up or set it in any
position other than face-down.
With Erika, muting and powering off is the same thing as this saves
battery power. When Erika powers on, it connects (pairs) to the Erika
Receiver and unmutes in less than 1/10th of a second.
If Erika is plugged into a USB power source, it will be muted and
powered down, and as it is charging, the Blue LED will flash. When
fully charged, the Blue LED will be on solid. Note that the Erika Mic
cannot be over-charged or over-discharged. Thus, you can leave the
Erika Mic on a USB power source, such as a computer or AC powered USB Power Supply. Most USB battery
banks will not charge Erika, as they will shut off prematurely.
To use Erika Mic, first plug the white Erika Receiver into your computer’s USB port via the supplied cable. If
your computer is powered up, the Erika Receiver has USB power, the Erika Mic is in range and not in a face-
down position, then the Erika Mic will power on automatically. If you power down your computer or remove
the Receiver from the USB port, your Erika Mic will automatically power down.
When the Erika Mic is powered up (unmuted), paired, and in range, the Receiver’s LED will be solid Green. The
Receiver’s LED will be solid Red when the Erika Mic is powered off (when it is in a face-down position), out of
range, or unpaired with the Receiver. The Erika Mic and matching Receiver are pre-paired at our factory.
A slowly flashing yellow LED on the Receiver indicates that the Erika Mic’s battery is low, with less than two
hours remaining. If the Yellow LED flashes faster, it is time to recharge the Erika Mic now. You may have less
than 15 minutes of runtime left.
