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4.
General Instructions for all Transmitters
4.1
Battery Change
•
Switch the transmitter off before changing the batteries.
•
If you do not use the transmitter for several weeks or months, please remove the batteries
as they can leak after some time and damage parts of the transmitter. Even "leak proof"
batteries may leak after some time. Damage caused by leaking batteries is not covered
under warranty.
•
Clean the battery contacts from time to time.
•
Please do not throw used battery packs away with your household rubbish, but take them
to your local collection points.
•
When using rechargeable batteries use conventional chargers.
4.2
Before the Soundcheck
•
Check the transmitter batteries and replace or recharge them if necessary. Use fresh alkaline
batteries only.
•
When the transmitters are switched off and immediately switched on again, it is possible
that the transmitter remains switched off. The cause is the function that allows to switch
the transmitter on / off silently. Should this problem occur during operation, the battery
might have contact problems. After switching off the transmitter you should wait at least
1 second, until you switch the transmitter on again.
•
Adjust the level of the receiver to the amplifier or mixing console.
•
Check the performance area for dropouts. If you find any dropouts, try to eliminate them
by repositioning the antennae or the receiver.
•
The receiving antennas should be placed so that the distance between receiving antennae
and transmitter is at least 3 m. If necessary, use remote antennae (AD 707 A/B Set).
•
To avoid popping try holding the microphone at a slight angle below the mouth.
4.3
Positioning of Transmitters if Interference occurs
Put all transmitters in their position and switch them on. Switch each transmitter off
one at a time and check the receiver for interference in the corresponding channel. In case of
interference, move the transmitter one at a time to find out which one is causing the interference.
Exchange the transmitters among themselves or change the carrier frequency until the system
is operating without any interference. The interference is possibly eliminated by changing the
squelch (refer also to chapter 1.4.5 Squelch Level).
4.4
What to Do to avoid Feedback
Feedback is caused by your microphone getting too close to a loudspeaker.
We recommend:
• Reduce the volume of the sound system.
• Move away from the loudspeaker.
• Turn the microphone away from the loudspeaker.
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