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EM 3532-U
Instructions for use
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Chapter Contents ............................................................................................................................. Page 1 Brief description, special features ........................................................................... 40 2 Connections and operating elements ..................................................................... 41 ™ 3 Noise reduction with HiDyn plus .......................................................................... 42 4 Diversity
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Thank you for choosing Sennheiser! We have designed this product to give you reliable operation over many years. Please take a few moments to read these instructions carefully, as we want you to enjoy your new Sennheiser product quickly and to the full. 1 Brief description With the EM 3532-U twin receiver, Sennheiser offers the professional user a high-quality state-of- the-art RF receiver with a high level of operational reliability and ease of use. The EM 3532-U receiver together with the suit
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2 Connections and operating elements 1 Headphone socket / ” (6.3 mm) ø 4 Headphone volume control Multi-function LC display panel Buttons for selecting and programming the menus SET/storage button ON / OFF switch Fuse holder and mains voltage selection 2-pin IEC mains connector Cable grip for mains cable Data interface for connecting a remote computer AF output XLR-3M, balanced
Control for the AF output level at the XLR socket Antenna input B DC socket (e.g. for us
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™ 3 Noise reduction with HiDyn plus Progress you can hear: ™ This receiver is equipped with HiDyn plus , the Sennheiser noise reduction system that reduces RF interference. It increases the signal-to-noise ratio in wireless audio transmission to up to 110 dB. The 96 dB dynamic range of a CD is thus considerably surpassed. ™ HiDyn plus is a wideband compander system which compresses the AF level on the transmitter side in a ratio of 2:1 (related to dB), and expands it in exactly the same way on t
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AF-signal AF-signal receiver 1 electronic switching receiver 2 from one signal to another 4 Diversity reception The EM 3532 receiver operates on the “true diversity” principle: A receiving antenna receives not only the electromagnetic waves which reach it by a direct path, but also the reflections of these waves which are created in the room by walls, windows, ceilings and fittings. When these waves are superimposed, destructive interference occurs, which can also be called “field strength gaps”
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5 Assembly and mounting Use as a stand-alone receiver When using the EM 3532 as a stand-alone receiver, it is easiest to use the supplied telescopic antennæ. They can be mounted quickly and easily to the rear of the receiver and are suitable for all applications where – good reception conditions provided – a wireless transmission system is to be used without a large amount of installation work. The best reception quality, however, is obtained by using remote antennæ (see chapter 6). To ensure th
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Mounting the receiver into a rack With the two supplied rack mount “ears”, the receiver can be mounted into a 19” rack (1 U). The rack mount “ears” are screwed to the receiver on the left and right . Note If you wish to connect the antennæ to the front side, you must pull the cables of the GA 3030-AM antenna mount through the holes on the rack mount “ears” before mouting the “ears” . The GA 3030-AM antenna mount (accessory, see chapter 28) allows the antennæ to be connected to the front of the
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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 and antenna boosters. These are available as accessories. The best reception quality is obtained with the Sennheiser A12 AD-UHF active antenna. Antenna and receiver can be connected with RG 58 co-axial cable. Ready made up antenna cables from Sennheiser are available as accessories with lengths of 1 m, 5 m and 10 m (see chapter 28). To supply t
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7 Selecting 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 change the mains voltage by removing the fuse holder with the inserted fuse , turning it through 180° and inserting it again . The set voltage can be seen at the top of the fuse holder. Mains connection Insert the supplied mains cable into socket on the receiver and pass the cable through the cable grip . Because of th
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8 Putting the EM 3532 into operation The receivers are switched on separately with the ON / OFF switches . The respective display panel is now lit up to show that the receiver is switched on, and the standard display is shown (see chapter 11). The display “MUTE” (see chapter 15) lights up, and the RF field strength is indicated. If a suitable transmitter is already operating on this frequency, the display “MUTE” is initially lit up for about two seconds. Then the deviation is indicated (m
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9 Basic functions of the Sennheiser operating menu A special feature of the Sennheiser 3000 series is the similar operation of transmitters and receivers. In stressfull situations, for example on stage or during a live show or presentation, it is important that the receiver is easy to operate and that adjustments to the receiver settings can be made quickly and “without looking”. Therefore, the necessary operating steps for each device must be similar. Press the / buttons to select a menu: B
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10 Menus / Overview FREQUENCY indicates the current receiving frequency. ( chapter 12) CHANNEL indicates the currently assigned channel number. ( chapter 14) SQUELCH indicates the squelch threshold. ( chapter 15) SCAN scans for available RF signals, the receiving frequency found is shown on the display. ( chapter 17) BOOSTER FEED indicates whether the supply voltage for active antennæ or antenna boosters is switched on or off. ( chapter 18) STANDBY indicates whether the receiver is set to s
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11 LC display panel
Display for the “FREQUENCY” menu. This display can be the receiver’s standard display which always appears after switch-on. Display for the “BOOSTER FEED” menu. Display for the “CHANNEL” menu. This display can also be the receiver’s standard display which always appears after switch-on. Display for the “STANDBY” menu. Alphanumeric main display, indicates the settings that can be adjusted in the menus. Ten-step bargraph for the received RF sign
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12 Setting a receiving frequency, allocating a frequency memory and assigning a channel number The EM 3532 receiver has a switchable frequency memory to store a maximum of 32 receiving frequencies with their respective channel numbers. The storing procedure is similar for each entry or modification: Press the / buttons to select the “FREQUENCY” menu. Then press the SET button. The “FREQUENCY MHZ” display on the display panel begins to flash: With the / buttons you can now select a diff
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With the / buttons you can now select a frequency memory (nos. 1 to 32). If the frequency memory has been assigned a channel number, this is also indicated. If no channel number has been assigned, three “hyphens” appear on the display, indicating that the frequency memory is empty (see chapter 13). Have you set the frequency memory correctly? Press the SET button until “Sto” briefly appears on the display. You now have to assign the frequency memory a channel number (from 001 to 255). Wi
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13 Deleting a receiving frequency, emptying a frequency memory You can empty a frequency memory if you enter three “hyphens” when assigning a channel number. The last frequency stored cannot be deleted. If you try to delete the last frequency stored, the display briefly indicates “LASt” and then switches back to the standard display. You can discontinue the programming of this menu by briefly (!) pressing the SET button. The display briefly indicates “ESC” and then switches back to the stand
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14 Setting the receiving frequency via the channel number In the “CHANNEL” menu, you can directly change from one stored receiving frequency to the next. Press the / buttons to select the “CHANNEL” menu. Then press the SET button. The “CHANNEL” display on the display panel begins to flash: The display indicates the receiving frequency in alternation with the channel number. With the / buttons you can now select a different channel. The display jumps either forwards or backwards to the
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15 Squelch (Muting) The EM 3532 receiver is equipped with an adjustable squelch which eliminates annoying noise when the transmitters are switched on and off. It also suppresses sudden noise when a transmitter leaves the reception area and there is no longer sufficient transmitter power received by the receiver. The adjustment of the squelch is via the “SQUELCH” menu. The adjustment range is between 0 and 134 (on the display), which corresponds to 0 to up to 100 μV. When the squelch is active, t
