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5.
General instructions for all transmitters
5.1
Battery change
•
Switch the transmitter off before changing the battery.
•
If you do not use the transmitter for several weeks or months, please remove the battery as it can
leak after some time and damage parts of the transmitter. Even "leak proof" 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.
5.2
Before the soundcheck
1. Check the transmitter battery and replace or recharge it if necessary. Use fresh alkaline batteries
only.
2. When the transmitter is 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.
3. Check the performance area for dropouts. If you find any dropouts, try to eliminate them by
repositioning the antennae or the receiver.
4. The receiving antennae should be placed so that the distance between receiving antennae and
transmitter is at least 3 m. If necessary, use remote antennae (AT 707 A/B).
5. To avoid popping try holding the microphone at a slight angle below the mouth.
5.3
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.
The interference is possibly eliminated by changing the squelch (refer also to chapter 2.6 How to adjust
the squelch).
When using multi-channel-systems, please contact beyerdynamic. Interferences can also be caused by
DVB-T / DVB-H signals or signals of other applications in the UHF range in the neighbourhood.
5.4
What to do to avoid feedback
Feedback is caused by your microphone getting too close to a loudspeaker.
We recommend:
•
Move away from the loudspeaker.
•
Turn the microphone away from the loudspeaker.
Opus 600 – General Instructions