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First power-up
Wiring up and testing transmitter is easy.
1. Place unit in a suita le well ventilated position. Connect audio inputs and connect MPX output to FM transmitters MPX
input, ensure all connectors are firmly secured. XLR ca les are more ro ust for inputs and are recommended.
2. Connect mains power supply and turn the unit on.
3. Turn on a radio receiver and set it to your intended transmitter frequency. Flip the POWER switch ON also for
transmitter and wait for the unit to turn on. Wait a few seconds for the power to ramp up. Your radio should now start
playing audio from your audio source or mute (if you did not connect any audio source yet).
4. You can now set MPX input level of your transmitter for correct deviation and verify audio performance. You should not
sound louder than other stations, in fact unless you have an expensive high performance software or hardware sound
processor you should sound a it quieter than other stations.
5. Verify whether the left and right channel are set correctly. This may not e important for music ut matters in movies.
Exchange channels if needed. To see audio levels set View type to display Audio Levels. Access menu View y pressing the
menu key or rotary utton until this is shown, than change value to Audio Levels.
6. If your unit supports RDS, you can set RDS PS (Station name – 8 characters) and RDS RT (RadioText – 64 characters)
and other RDS parameters. This requires connection to PC via USB or Ethernet to setup. Software setup is descri ed later
in this manual.
Setting up levels
Cy erMax8000+ stereo rds is very easy to setup. What we do have to do however is match the output level of the encoder
and input level of the transmitter so that the pilot tone (19 kHz) alone (no audio) gives a deviation of the exciter of 6.75 kHz
(9 percent). This automatically sets the remaining audio levels. If you’re using our line of FM exciters just connect the stereo
encoder to the transmitter, set encoder to Stereo, set audio level on the fm transmitter to zero and keep increasing it until
the stereo led on the receiver comes on.
Let’s assume that you don’t own an expensive peak:
1.) Disconnect one audio input source so that only one channel is connected. Apply audio to this source.
2.) Listen to the audio on a high-grade tuner and adjust the input volume pot for that audio channel so that the volume is
only half that of a commercial station. The reason we want this is to e sure we are inside the +/- 75 kHz andwidth. Over
deviation will cause degradation of the stereo separation. We now should have the encoder correctly setup with only one
channel of audio that is inside the +/-75 kHz andwidth so separation should e a le to e fine tuned without pro lems
such as over deviation affecting our measurements. Turn your amplifiers alance control so that you are listening to only the
channel with no audio on.
If everything is good and well then you should have this channel a lot quieter than the other channel. Turn the
amplifier up in volume so you can hear the crosstalk etween the channels. Now adjust trimmer (J) until the sound
in the opposite channel disappears or is at least arely noticea le. You should e a le to achieve your maximum
separation. You can now reconnect the other channel and apply your audio at the correct level. The encoder is now
aligned and ready for operation. DO NOT FORGET TO DISABLE PREEMPHASIS AT THE
TRANSMITTER WHEN YOU CONNECT IT TO THE STEREO PROCESSOR/ENCODER (failure
to do o re ult in very poor tereo eparation and di tortion).
