User manual GRADAV SENNHEISER 1000 RADIO MICROPHONES

[. . . ] Prepare the new battery by removing any wrapping. Take particular care to remove the rubber terminal cover fitted to batteries made by Duracell. Insert the battery ensuring that the polarity of the terminals match those of the transmitter. It may be necessary to change the transmitter operating frequency. [. . . ] Bottom unit is an ADA, which allows all receivers to share a pair of Dipole aerials. It also powers itself and all receivers. Connect receivers to mixer inputs and attach all aerials. Single kits have their aerials attached, and these need only to be extended and set as shown in the cover picture. Multi-channel kits are supplied with 2 Dipole aerials that are connected to the ADA (Aerial Distribution Amplifier) and this supplies RF signals to all receivers. Dipole aerials should be a minimum of 3 metres apart. Note that on UHF aerials there is a moulded `E'. This is to show which element should be at the bottom. VHF aerials have a whip for the upper element, and a helical for the lower. Failure set aerials correctly can affect performance in a marked It is worth Failure toto set aerials correctly can affect performance markedly. It is spending time time experimenting with location, for a small small can often worth spending experimenting with aerial aerial location, for achange change can transform system performance. Where we have supplied a flightcased system, you should note that we number the transmitter, it's receiver and output cable with corresponding channel numbers. Power up using either plugtop power supplies (single kits) or connect to the mains and switch on the ADA (Aerial Distribution Amplifier) which in turn powers all the receivers in the flightcase. Connect the Microphone to each Pocket Pack transmitter in use. Always test multichannel systems with all transmitters switched on. Receivers lock onto the strong signals of their matching transmitters. In the abscence of such a signal they will accept unwanted interference (known as intermodulation interference - often shortened to `intermod' ), which can light several segments of the RF display. There is usually little or no audio present, but it can be confusing if displays light on channels you weren't expecting! CHECK - every performance Each channel in turn for RF signal strength and audio quality. Inspect for damage to every microphone cable and connector. Transmitter aerial for cable damage and ensure that the connector is tight. Re-set if required. Only when you are satisfied, should you distribute the transmitters. If you are not planning to use them immediately it may be best to switch off the transmitters. When all are switched off you should check the receiver displays. It will soon be obvious if you have missed one!Always collect the transmitters at the end of the show. [. . . ] Check receiver aerials are vertical and with the [E] element at the bottom. Experiment with receiver aerial positions, while observing the RF displays on the receivers. Microphone crackles Screw-lock connectors need to have their locking ring tight. Snap fit connectors should be fully home. If you think you have found a faulty microphone, test your suspicions by substituting a working microphone from another unit. [. . . ]