freemate DA-475, Руководство пользователя

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Checking the telephone
While wearing the headset, lift the handset from its cradle, position it off-hook and listen.
If you can't hear the dial tone at the supplied setting remove the security cover located on
the side of the amplifier and slide the compatibility switch to No.2 until you can hear a
clear dial tone. If the transmission voice can not be heard or very low, slide
microphone selection switch to C
If your amplifier is still not working property, try the following;
-. If there is a beep sound, turn the transmission volume controller to the left side (-) for low
volume. If the listening/transmission volume is low, turn the transmission volume to the
right (+) and increase the listening volume controller at the same time until they are
increased to the proper level.
-. If there is a listening tone, adjust both listening and transmission volume controllers to
the low volume side at the same time.
-. If there is high pitched feedback when the volume is set to normal usage levels, adjust
the distance of the headset boom between the microphone cap and your mouth. The
correct distance is 2.5cm from your mouth.
Setting and adjustment
If your amplifier is still not working, place Dip switch No.3 to ON
If the listening volume is still too high, place Dip switch No.1 to OFF to decrease it. If the
listening volume is too low, place Dip switch No.1 to ON to increase it.
If the transmission volume is still too high, place Dip switch No.2 to OFF to decrease it.
If the transmission volume is too low, place switch No.2 to ON to increase it.
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