Meaning of the LEDs and acoustic signals
LEDs on the transmitter
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| Operation indication | lit green | Transmitter is switched on |
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| off | Transmitter is switched off |
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| Charging control LED of receiver | lit red | Spare rechargeable |
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| rechargeable battery |
| battery or rechargeable |
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| Charging control LED of spare |
| battery is being charged |
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| rechargeable battery |
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| lit green | Rechargeable battery is | |
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| fully charged |
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| Speech intelligibility” button | lit yellow | Speech enhancement is |
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Acoustic signals of the receiver
Acoustic signal | Meaning | Commentary |
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6 short beeps | No audio signal | Automatic |
| (transmitter is not | approx. 3 minutes |
| activated or out of |
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2 long beeps | Rechargeable battery is | Automatic |
| flat | approx. 10 minutes |
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1, 2 or 3 beeps after | Receiver is tuned to | These beeps can be switched off |
having pressed the | channel 1, 2 or 3 | by pressing the TUNE button |
TUNE button |
| for 5 seconds while the receiver is |
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