Locking Settings

Press ON/OFF PROGRAM and SELECT simultaneously to lock or unlock transmitter settings.

When locked, the current settings cannot be manually changed.

Note: Locking the transmitter settings does not disable IR frequency synchronization or the High Pass/Low Cut filter.

To use with a logic enabled receiver, you must perform an automatic sync. The LCD flashes “log” during sync. Once in logic mode, the LCD flashes “log” when powered up.

LOGIC MODE

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Shure MX690 manual Locking Settings, Logic Mode