Classroom AV Controller Instructions - Biamp EchoPlus

Source Selection

Select the input device you intend to use to turn the system on. The projector will power on, and the projection screen will unroll. There are three source devices: the laptop, the in-room computer, and the document camera. Each device has corresponding icons next to the associated button, which will blink while the source is loading. Once the loading time is up, the light on the button will stop blinking and stay red. 

Connect the laptop cable to the appropriate output on your laptop. Most laptops will use the USB-C adapter attached to the HDMI cable at the lectern. Some Windows laptops use the HDMI connector alone.

Note: You can use the “on” button to turn the system on without selecting a source to show up on the projection screen.


Volume Control

You can control the volume using the volume up and down buttons on the control panel by either holding the buttons or pressing the buttons multiple times. Please have a source playing while adjusting the volume so you can hear when it’s at the appropriate volume. If you do not hear sound from the speakers, ensure the volume is up on the software or browser player you are using. To mute the volume, use the software or browser player controls. 


AV Mute

The AV Mute function allows you to toggle between showing and not showing the image on the projection screen. Press the AV Mute button to toggle this function. 


System Off

To turn the system off, press the “off” button. The projector will shut down, and the projection screen will roll up. 


Basic Troubleshooting

The source doesn’t show

If your source doesn’t show up on the projection screen, but the projector is on, and the projection screen has been unrolled, press the intended source button again and wait 10 seconds. Also, verify that the source (laptop, document camera, or in-room computer) is powered on. You may have to move the mouse or press buttons on the keyboard to wake up the in-room computer.

You can also try switching to another source. For instance, from the laptop to the document camera or in-room computer, to verify that a signal is getting to the projector. If a signal is getting to the projector, try rebooting your intended source. 

Press the circular “Help” button next to the control panel if the above does not work. You will hear a chime indicating that the help request has been received and a technician is on the way. 


The projector has powered off on its own

The projector will power down after losing its signal for two minutes. This does not apply to the AV Mute function. The projector will automatically power back on once the signal is restored. 


There is no sound from the in-room computer or laptop source

Ensure that HDMI MATRIX is the selected output device. 

For Windows: 

  • Left Click on the sound icon in the taskbar.
  • Above the volume bar, there should be an audio device listed.
  • Clicking on the drop-down list should show all the available audio devices that can be selected.
  • Select HDMI MATRIX by left-clicking on it.

For Mac: 

  • On your Mac, choose the Apple menu > System Settings, then click Sound in the sidebar. (You may need to scroll down.)
  • Click Output on the right, then select HDMI MATRIX in the list of sound output devices.

Unplug and plug back in the laptop connection if HDMI MATRIX does not appear as an option in the list of sound devices.



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