Confirm microphone signals

Confirm an infrared signal is being received at the receiver/amplifier. The iR signal light should be illuminated, indicating a signal is being received.

The light should be steady and not pulse. A flickering light means the iR signal is being disrupted somehow.

Note: If your system has a remote sensor installed in the classroom ensure the sensor has power too. A red LED should be illuminated, indicating power is being received.