In order to comply with international regulations for consumer products, these units are designed to enter standby mode if no user interaction and no audio input signal are detected for an extended period of time (default is 20 minutes). The unit can be brought out of standby by pressing the STBY button on the front panel, the trigger input or RS232 or ethernet command (if enabled)
By pressing and holding the MUTE button will toggle the standby time out between OFF and 20 minutes.
The LED will flash to indicate the setting change, red for OFF, green for 20 minutes.
Note: if the standby time-out is set to OFF, the automatic
standby feature will be disabled.