Telecom Behnke 20-0040, Инструкция по эксплуатации

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Instruction PA-system - add-on amplifier
Connection 20-0055 / 20-0056
GB
5.2. Operation of the Behnke door intercom stations 20-0001E, 20-0014E,
20-0016E, 20-0043E with external 7 Watt add-on amplifier (20-0055/20-0056)
** ▸ Enter set-up mode
0000 ▸ Enter security code
06 1 to 5 # ▸ Setting up the volume, choose the lowest volume “1” here
912 1 to 4 # ▸ Setting up the microphone sensitivity.
Choose the least sensitive setting "1" here.
* ▸ Exit Set-Up mode
In case of a possible acoustic feedback of the door intercom station, please perform the following
potentiometer settings (cf. image).
If the acoustic feedback still persists after
having performed the settings described above,
please adjust the potentiometer setting as
follows:
Carefully remove the locking varnish on the
potentiometer. Slightly turn the potentiome-
ter clockwise until the acoustic feedback has
vanished.
If necessary, re-adjust the volume again using
configuration steps 06 (increase speaker
volume) and 912 (increase microphone volume).