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Convergent Design 

14 January 2020 

Erika User Manual 

 

With Power Levels 1, 2, and 3, you can expect about 24 hours of battery runtime in Speech Mode, which we 
will cover later, and less in Music Mode. With Power Levels 3, and 4, expect about 16 hours of runtime in 
Speech Mode. Thus, a side benefit of choosing a lower power level is additional runtime. 
 
Ideally, you will experiment, in your environment, to determine the lowest power level that gives you perfect 
audio transmission.  
 
With the lowest power level determined, your Erika Mic will automatically mute when you leave your 
approximate area or room. It may not immediately mute when you leave the room, but as you walk further 
away, it will. AutoMute is a considerable advantage, as when you leave the room and have a private 
conversation or use the facilities, your Erika Mic will probably be muted. Of course, this depends on two 
things: you set the power level to the lowest workable power level and left the area. We highly recommend 
that you test this feature in your environment. 
 
You may be in a room in many cases, and others may be using Erika in an adjacent room. In these cases, it is 
best to set your power level to the lowest acceptable level so that the two Erika systems do not interfere with 
each other. Of course, Erika is designed to avoid interference, but it helps when the minimum acceptable 
power levels are used. 

 

Firmware Updates

 

 

Erika contains firmware, which is fully upgradeable in the field. This function enables us to add features over 
time and to fix problems that might occur.  While most computers can be used with Erika, a Windows 10 
computer is needed for the firmware update process. 
 
The firmware update process is easy. 

1.

 

Download the latest firmware update app fro

www.convergent-design.com

 to a Windows 10 

computer. 

2.

 

Install the app on the computer. 

3.

 

Open the app. 

4.

 

Connect the Erika Mic to your computer using the supplied USB cable. 

5.

 

Click on Update Firmware. The process will take approximately 10 seconds. 

6.

 

Connect the Erika Receiver to your computer using the same USB cable. 

7.

 

Click on Update Firmware. The process will take approximately 10 seconds. 

Music and Speech Modes

 

 
Erika supports high-quality audio optimized for either Speech or Music, your choice. 
Many will use Erika for speech, so Erika comes from the factory optimized for speech. 
 
But, for those that want to use Erika for music, we have a Music Mode. 
Enabling Music Mode is accomplished via a quick firmware update.  

Summary of Contents for Erika

Page 1: ...Erika Microphone System User Manual Convergent Design 4525 Northpark Drive Colorado Springs Colorado 80918 www convergent design com 720 221 3861 ...

Page 2: ...4 How do I charge the Erika Microphone 4 Erika Transmission information 4 Music and Speech Modes 5 WiFi 7 Receiver Positioning 7 LED Indicators 8 Technical Specifications 9 Warranty Information 10 Customer Support 11 Regulatory Information 11 Online Resources 12 How do I survey my location for 2 4GHz WiFi to check for heavily used channels 12 Safety 13 ...

Page 3: ...at the Mic needs to be paired with the Receiver Our factory pairs the Mic and Receiver before shipping 4 You may now attach Erika using one of the supplied magnets 5 In most situations your Windows 10 computer will recognize your Erika Mic and your software such as Zoom Microsoft Teams and Google Meet will immediately use your new Erika Mic 6 Erika should be ready for you so you may now speak natu...

Page 4: ...owered 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...

Page 5: ...will turn off the USB port Note that attaching an Erika to a laptop then closing the laptop will STOP the charging The Blue LED will flash while charging and a solid Blue LED indicates a full charge While charging the Erika microphone is muted Erika Transmission information Erika uses 2 4 GHz radio spectrum to communicate between transmitter and Receiver Erika utilizes random frequency hopping Thi...

Page 6: ...ses it is best to set your power level to the lowest acceptable level so that the two Erika systems do not interfere with each other Of course Erika is designed to avoid interference but it helps when the minimum acceptable power levels are used Firmware Updates Erika contains firmware which is fully upgradeable in the field This function enables us to add features over time and to fix problems th...

Page 7: ...u desire Using a different firmware version for Speech and Music we eliminate the possibility of activating Music Mode accidentally Using Erika with Various Programs With Windows 10 most programs such as Zoom Google Meet and Microsoft Teams will immediately recognize and use Erika as your audio source Specific advanced audio programs require you to select the Erika Mic as your audio source manuall...

Page 8: ...hat the Erika Receiver is not located close to a WiFi Router or Extender 3 Set your 2 4 GHz WiFi Bandwidth to 20 MHz versus 40 MHz 4 If you have multiple WIFI routers access points you need to assign them to the same WIFI channel Otherwise the RF spectrum may be consumed with WiFi traffic Receiver Positioning A clear line of sight path from the Erika Mic to the Erika Receiver is ideal However this...

Page 9: ...ver Red Solid Red The paired Erika Mic is powered off muted or out of range of the Receiver In unusual cases it may be that the Erika Mic is not paired with your Erika Receiver No audio is being sent to the Receiver Receiver Yellow Slow Flashing Yellow The Receiver starts flashing Yellow slowly when less than approximately two hours of Mic battery runtime remains As conditions permit maybe during ...

Page 10: ...Power Levels 4 and 5 16 Hours Speech Mode Music Mode is less Power Levels 1 2 and 3 are for short to normal range and 4 and 5 are for long range operation Battery Standby Time Mic Powered Off 60 Days Speech or Music Mode Max Distance between Mic and Receiver Values are for a clear line of sight from Mic to Receiver Outdoors Approximately 300 feet 91 meters in Speech Mode Approximately 70 feet 21 M...

Page 11: ...sed in the repair process may be recycled or repaired at Convergent Design s sole discretion Convergent Design will perform this warranty service at no charge to the registered owner provided the product is shipped prepaid to Convergent Design Convergent Design reserves the right to determine whether a needed repair is subject to the warranty as per its provisions stated herein Transit damage caus...

Page 12: ...omply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications Howe...

Page 13: ... the other signals will cause interference with Erika Erika will automatically block out channels with heavy interference It is preferred to have as many channels available for Erika Another option to provide more channels for Erika is to move your local WiFi network up to the 5GHz band turning off the 2 4GHz transmission The Net Spot application does operate on the 5GHz channels as well so you ca...

Page 14: ...sert anything into the Erika Mic port which is the opening on the front of the Erika Mic Do not immerse Erika in any liquid or allow any liquid to enter the Erika case Do not make unauthorized alterations to Erika or open the case Do not expose Erika to excessive heat Examples are extended periods in direct sunlight hot vehicles or other heat Please dispose of it correctly following local regulati...

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