Furuno LH-3000 Adjusting Key Backlighting, Adjusting Output Level, Adjusting Listening Volume

2. OPERATION

2.3 Adjusting Key Backlighting

You may adjust the intensity of the key backlighting cyclically with the [DIM] key, in five levels, including off.

2.4 Adjusting Output Level

Turn the [HAIL VOL] control to adjust the output volume from the horn speakers or intercom speakers. Clockwise rotation increases volume; counterclockwise rotation decreases it.

2.5 Adjusting Listening Volume

Turn the [LISTEN VOL] control to adjust the listening volume from the Loud Hailer’s internal speaker and external speaker (if connected).

2.6 Calling All Intercom Stations

1.In the standby mode, hold the microphone 2-3 cm from your mouth and press the PTT switch on the microphone. Speak into the microphone. All intercom stations and both horn speakers will hear you.

2.After speaking, release the PTT switch to return the equipment to the standby mode.

Note: To call all intercom stations while sounding warning signals, see page 17.

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