EM 3532-U Instructions for use
38
Chapter Contents ............................................................................................................................. Page 1 Brief description, special features ........................................................................... 40 2 Connections and operating elements ..................................................................... 41 3 Noise reduction with HiDyn plus™ ..........................................................................
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-ofthe-art RF receiver with a high level of operational reliability and ease of use.
2 Connections and operating elements Headphone socket 1/4 ” (6.3 mm) ø 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.
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.
AF-signal receiver 1 4 AF-signal electronic switching from one signal to another receiver 2 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”.
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).
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” .
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).
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 grip .
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.
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.
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.
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.
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: 씰 Press the / buttons to select the “FREQUENCY” menu. Then press the SET button.
씰 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). 씰 Have you set the frequency memory correctly? Press the SET button until “Sto” briefly appears on the display. 씰 You now have to assign the frequency memory a channel number (from 001 to 255).
13 Deleting a receiving frequency, emptying a frequency memory 씰 You can empty a frequency memory if you enter three “hyphens” when assigning a channel number. 씰 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.
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. 씰 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. 씰 With the / buttons you can now select a different channel.
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.
16 Advanced muting function This receiver also features AMF (Advanced Muting Function). This special electronic feature comes into effect when an RF signal drops by about 40 dB in a short time. The reception is then muted for at least three seconds. AMF thus suppresses the annoying switch-off click when a transmitter is switched off. Because of the delay in switching on again, the PLL circuit of the transmitter has enough time to adjust itself back to the corresponding transmission frequency.
17 Automatic transmitter search tuning – Scan function The EM 3532 receiver features a scan function to scan the frequency range of the tuner for a transmitter. For some countries, this menu is locked via a special configuration program, since not all tunable receiving frequencies are approved in these countries. If the “SCAN” menu is selected, “Loc” appears on the display. 씰 Press the / buttons to select the “SCAN” menu. “SCAn” appears on the display: Then press the SET button.
씰 If no transmitter is found, the search tuning stops at the upper or lower limit of the 24 MHz frequency window. The display then indicates: 씰 If a transmitter with a strong enough RF signal (higher than the squelch level, but at least 5 μV) is found, this frequency is indicated on the display. In addition, the deviation and the RF level of the received signal are indicated via the bargraphs. You can now monitor the sound signal with headphones.
18 Adding a supply voltage for antenna boosters Antenna boosters can be connected to the antenna inputs of the EM 3532 receiver and can be supplied by the receiver via the antenna cables. The supply voltage can be switched on or off. Both receivers in the EM 3532 should be set to the same setting, i.e. both receiver should be set to either “On” or “OFF”! 씰 Press the / buttons to select the “BOOSTER FEED” menu. The current setting – i.e. “On” or “OFF” – is indicated on the display.
19 Stand-by operation The EM 3532 receiver can be set to stand-by operation. During stand-by operation, information from the RF section is no longer processed and the AF section is muted (MUTE). All other menus – except for “REMOTE” and “STANDBY” – are locked. If you try to select any other menu, “Loc” appears on the display. 씰 Press the / buttons to select the “STANDBY” menu. The current setting – i.e. “On” or “OFF” – is indicated on the display. Then press the SET button.
20 Remote control The EM 3532 receiver can be set for “computer remote control only”. When set for remote control, all other menus – except for “REMOTE” – are locked. If you try to select any other menu, “Loc” appears on the display. 씰 Press the / buttons to select the “REMOTE” menu. The current setting – i.e. “On” or “OFF” – is indicated on the display. Then press the SET button. The “REMOTE” display on the display panel begins to flash.
21 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 (in %) – i.e. the modulation of the RF signal – are shown. Both displays have an overmodulation display. If the signal is too high, “PEAK” lights up briefly. Short overmodulation is not critical. Where longer overmodulation occurs, the modulation of the corresponding transmitter must be reduced.
22 Monitoring the sound signal, headphone connection Sockets on the EM 3532 receiver can be used to monitor the sound signal received with headphones. The headphone volume is adjusted with controls . Please use headphones with a 1/4 ” (6.3 mm) ø stereo jack plug. The sound signal itself is mono. The Sennheiser HD 25 headphone is especially usefull for this purpose.
23 Replacing a fuse Disconnect the receiver completely from the mains! To do so, pull out the mains connector on the receiver. You can then remove the fuse holder with the inserted fuse. Replace the fuse by a new fuse with the same rating and switch on the receiver again. Make sure that you have inserted the fuse holder the correct way round! The set voltage is shown at the top of the fuse holder. A faulty fuse should always be regarded as a warning.
24 Sennheiser transmitters report their battery status Sennheiser supplies hand-held and pocket transmitters which provide information on the available transmitter battery status to the receiver. This information can be evaluated with the EM 3532 receiver. The remaining battery capacity is first indicated via the six-step bargraph on the display panel .
25 Suitable Sennheiser transmitters For the optimum use of the excellent reception qualities of the EM 3532 receivers, Sennheiser offers hand-held and pocket transmitters in a variety of configurations: Pocket transmitters: SK 1063-U BF 1083-U SK 50-U SK 250-U (without display of battery status) (without display of battery status) (with display of battery status) (with display of battery status) Hand-held transmitters: SKM 1072-U SKM 3072-U SKM 5000-U (without display of battery status) (with display
26 Error checklist Error Possible cause Receiver does not work; display panel dark Receiver does not work; display panel lit up Fuse defective Transmission frequency does not agree with receiving frequency Squelch threshold adjusted too high Sound distorted AF output signal adjusted too high.
28 Recommended accessories Antenna mount GA 3030-AM Cat. no. 04368 Active antenna A 12 AD-UHF Cat. no. 04156 Ground plane antenna GZA 1036-9 Cat. no. 02332 Antenna booster AB 1036-TV Cat. no. 03598 Co-axial cable, 1 m GZL 1019 A1 Cat. no. 02324 Co-axial cable, 5 m GZL 1019 A5 Cat. no. 02325 Co-axial cable, 10 m GZL 1019 A10 Cat. no. 02326 BNC coupler Active antenna splitter custom-built to customer specifications GZV 1019A Cat. no. 02368 AS-X Cat. no.
29 Technical data RF characteristics Frequency range Receiving frequencies Switching bandwidth Frequency stability Sensitivity (with HiDyn plus™) Squelch treshold Image rejection Adjacent channel rejection Intermodulation attenuation Free field interference radiation 30–2,000 MHz Antenna inputs Antenna input impedance 430–960 MHz max. 32 (32 frequency memories) 24 MHz ± 10 ppm (– 10 °C to + 55 °C) < 5 μV for 90 dBA rms SNR 0 to 100 μV, adjustable ≥ 50 dB, typ.
Sennheiser electronic GmbH & Co. KG 30900 Wedemark, Germany Phone +49 (5130) 600 0 Fax +49 (5130) 600 300 www.sennheiser.com Printed in Germany Publ.
