User manual SENNHEISER EM3032-U

[. . . ] Instructions for use EM 3031-U EM 3032-U 27 Thank you for choosing Sennheiser! You have made an excellent choice. This product will give you reliable and cost-effective ease of operation over many years. All of Sennheiser's professional expertise and more than fifty years of experience have gone into the creation of this state-of-the-art product. We want you to enjoy your new receiver quickly and to the full. Chapter 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 28 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Site the receivers as high as possible so that the receiving antennæ have a "free line of sight" to the transmitter antennæ! 35 6 Connection and mounting of remote antennæ If the receiver position is not the best antenna position for optimum reception, you can use remote antennæ. The best reception quality is obtained with the Sennheiser A12 AD-UHF active antenna. Ready made up antenna cables from Sennheiser are available as accessories with lengths of 1 m, 5 m and 10 m (see chapter 20) Attention!To supply the antenna booster integrated in the A12 AD-UHF active antenna, a direct voltage (which can not be switched off) is output via the antenna sockets. If you use antennæ from other manufacturers instead of the A12 AD-UHF, take into account that these must be installed with direct voltage decoupling, i. e. The output voltage supply is short circuit-proof, but an active antenna connected to this supply increases the power consumption of the overall device. Notes on mounting the antennæ (which absolutely must be adhered to) Position antennæ in the same room in which the transmission takes place!Maintain a minimum distance of 1 metre from metal objects (including walls of reinforced concrete)!Maintain a minimum distance of 1 metre between the receiving antennæ! 36 7 Switching the mains voltage Before you plug the mains connector into the mains, please check first of all that the receiver is set to the correct mains voltage! You can switch the mains voltage by removing the fuse holder with the inserted fuse , turning it through 180° and inserting it again , . The rated voltage set can now be seen at the top of the fuse holder. Mains connection Insert the mains cable supplied into the socket traction relief µ. on the receiver and pass the cable through the and interrupt operation. Because of the traction relief, the cable can no longer slip out of socket Note A straw relief clamp is particularly important when the receiver is permanently rack mounted. Inside the rack there are often a large number of cables - a straw relief clamp bracket prevents the cables from pressing each other out. 37 8 Putting the receiver into operation The receiver is switched on with the ON / OFF switch ². Display panel » is now lit up to show that the receiver is switched on, and the last frequency set is shown (see chapter 10). If a suitable transmitter is already operating on this frequency, the display "MUTE" is initially lit up for about 4 seconds. Then the display changes to "RF" and "DEV" (RF level and modulation, see chapter 13), and the diversity branch in use is displayed (see chapter 4). Note The ON / OFF switch ² works in the secondary circuit of the integrated mains transformer, and thus only switches the low voltage side. Pre-programming and group assignment is carried out by the factory according to your specifications. Possible specifications for frequency combinations: Use of several receivers to make up a multi-channel system With this frequency combination, the receiving frequencies are divided into groups such that they can simultaneously be used within one group (or several groups) without causing intermodulation interferences. 1 . . . 16 . . . . . . Use of receivers in different places Here, a frequency group is assigned to a TV channel. If one or several receiving frequencies are subject to interference (e. g. due to TV transmitters), please choose a frequency group in a different TV channel. 40 Number of receiving frequencies For ease of use, or if required by country-specific restrictions on the frequency usage, it is also possible to program less than 32 receiving frequencies. Your local Sennheiser distributor will be happy to help you in the selection of your receiving frequencies. 11 Reprogramming the receiving frequencies ­ no problem! If you wish ­ for whatever reason ­ to change your receiving frequencies, reprogramming, within the limits of the receiver's specifications, can be carried out without any problems by your local Sennheiser service department. 12 Display of frequency groups In the selection of receiving frequencies, the receiver goes through the four groups in succession. Each additional illuminated dot represents a further group: 1 2 3 4 41 13 Power of the received RF signal In display panel , the power of the received RF signal in (µV) and the level control of the AF signal ­ i. e. If the signal is too high, the text "PEAK" lights up briefly. [. . . ] When the battery capacity is so low that only a transmission time of about 20 to 30 minutes remains, the text "LOW BATT" flashes on the display panel . The AMF (Advanced Muting Function) in the EM 3031 / EM 3032 receiver helps you, as far as possible, to maintain the transmission without noise (see chapter 15). Notes The "LOW BATT" display is reset by the mute function. Whenever the squelch is activated in the receiver, the "LOW BATT" display goes off and the evaluation of the feedback from the transmitter starts over again. Under favourable reception conditions, the evaluation of the battery information from the transmitter lasts about 10 ­ 20 seconds. [. . . ]