Instruction/ maintenance manual of the product EM 3731 Sennheiser
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300 100 30 10 10 50 100 PEAK µ V RF % DEV M H z 790.800 03.03 BANK CH A B COM AF 300 100 30 10 10 50 100 PEAK µ V RF % DEV M H z 790.800 03.03 BANK CH A B COM AF Instructions for use EM 3732 Command.
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1 Contents Important safety instructions ............. ...... ........ .............. ............ ........... ........... 2 Delivery includes ............. ............ ........... .............. ........... ............... ........... ........... 4 The EM 3731/3732 recei ver fa mily .
2 Important safety instructions Important safety instructions 1. Read these instructions. 2. K eep these instructions. 3. Heed all warnings. 4. Follow all instructio ns. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openin gs.
3 Important safety instructions Hazard warnings on the rear of the receiver The label shown on the lef t is attached to the rear of the device. The symbols on this label have the fol lowing meaning: T.
4 Delivery in cludes Intended use of the receiver Intended use of the EM 3731 si ngle receiver or the EM 373 2 and EM 3732 Command twin receivers includ es: y using the device for professional purpose.
5 The EM 3731/3732 receiver fa mily The EM 3731/3732 receiver family The receivers of the EM 3731/3732 receiver family ensure highest reception re liability and offer unma tche d ease of use. Due to their large switching bandwi dth and numerous co nnection options, these receivers provide maximum flexib ility in daily operation.
6 The EM 3731/3732 receiver family The receivers have seven frequency banks. Distribution of t he receiving frequenc ies within the frequency banks 1 to 6: The varying accumulation of freque ncies within the frequency banks allows you to use a s many channels as possible in a crowded frequency band.
7 Overview of operating controls Overview of operating controls *) The audio outputs marked with the number “1” output the audio signal of the lef t receiver of the twin receiver (as viewed from the front) ; the audio output s marked with the nu mber “2” output the audio signal of the right receiver.
8 Overview of the display Overview of the display Reception display 쐃 RF level display “RF” for antenna A 쐇 Diversity display (antenna A or antenna B active) 쐋 RF level display “RF” for antenna B 쐏 Audio level di splay “Dev” 쐄 Display of the squelch threshold For additional infor mation see pages 9 and 10 .
9 Indications and displ ays Indications and displays The displays provide information on the o perating states of the corresponding receiver and thos e of the received transmitter.
10 Indications and displays Audio level display “Dev” The audio level d isplay “Dev” 쐏 shows the modulation of the received transmitter. When the tr ansmitter’ s audio inpu t leve l is excessively high, the receiver’s audio level display “Dev” 쐏 shows more than 100 %.
11 Indications and displ ays T ransmit ter battery status displ ay The 6-step tran smitter battery status di splay 쐊 provides information on the transmitter’s rema ining battery/acc upa ck capacity: Note: If no batt ery/accupack stat us sign al is received, the battery status display is not shown.
12 Indications and displays LEDs for booster suppl y of antenna inputs The LEDs for booster supply of antenna input A N or B S li ght up when y the booster supply vo ltage is applied to the correspondi ng antenna input A O or B R .
13 Putting the receiver into operation Putting the receiver into operation Fitting the device feet When the receiver is not installed in a rack, avoid the receiver sliding a r o u n d a n d r e d u c .
14 Putting the receiver into operation The rack mount “ears” are already atta ched to the receiver at the factory. T o mount the device into a 19" rack: 왘 Slide the receiver into the 19" rack. 왘 Secure the rack mount “ears” 1 t o t h e r a c k u s i n g f o u r s c r e w s ( n o t included).
15 Putting the receiver into operation Mounting the antennas to the front of the rack When rack mounting the receiver , you require the GA 3030 AM antenna mount (available as an accessory) to mount the antenna connections to the front of the rack.
16 Putting the receiver into operation Mounting and connecting remote antennas Use a remote antenna (available as accessories) when the receiver position is not the best an tenna position for optimum reception. 왘 Connect the remote ante nnas to the BNC sockets O and R at the rear of the receiver using a low-at tenuation 50- Ω coaxial cable.
17 Putting the receiver into operation Connecting the receiver to the mains/disconnecting the receiver from the mains The receiver has no mains switch. T o connect the receiver to the mains: 왘 Connect the supplied mains ca ble to the 3-pin mains socket D .
18 Putting the receiver into operation Connecting an external word clock generator The receiver can digitalize the audi o signal and output it via the digit al balanced XLR-3M audio ou tput G . The built-in A/D converter supports sampling rates of 44.
19 Using the receiver When you are working with the “Wir eless Systems Manager” sof tware, you can use the “Spectrum Analyzer ” tool to perform a continuous frequency scan. The “Spectrum Analyzer“ tool uses the receiver that yo u select to check the relevant frequency range for signals and r ecords the corresponding measured values.
20 Using the receiver Connecting the headphone s/adjusting the volume The EM 3731 single receiver features a headphone output 2 . The two receivers of the EM 3732 or EM 3732 Command twin recei ver have a common he adphon e output 2 .
21 Using the receiver Synchronizing the transmitter with the receiver frequency Via its infra-red interface, the receiver can transfer the frequency and the name to suitab le transmitters (e.
22 The operating menu The operating menu Overview of menus Menu level Display Function of the menu Uppermost menu level Tu n e Setting a receiving frequency (this frequency is automatically stored in channel “01” of the frequency bank “U” ( user bank)).
23 The operating menu W orking with the operating menu By way of example of the “ Tune ” menu, this section describes how to use the operating menu. Af ter switching the receiver on, the st atus display is shown on the display panel. Getting into the operating menu 왘 Press the jog dial .
24 The operating menu Operating menu of the receivers Bank.Ch B.Ch 1.01 u ne 90. 00 Na m CE L B.Ch 1 . 790.900 MHz B.Ch 5 . 16 T une 790. 800 Ban k B.Ch 1.0 1 MHz save esc save Name CEL B .Ch . Ch . 16 save save S q uel 5 0 C E Squelch uelch Squel 50 a me EL Boost e save Booster AF O +12 Booster Feed On AF Out +12 o oster Cloc k 48 MHz MHz 790.
25 The operating menu save save AF Out +12 o oster Cloc k 48 +12 +12 dB +18 +18 dB 20 Clock 48 F Out 18 Comm 3 save esc Comm 3 48 44.1 48 88.2 96 Ext. 96 44.
26 The operating menu * Af ter pressing the save button 8 , the display automatically changes to the “ B.Ch ” m enu (see page 24) – i.e. to the selected frequency bank.
27 The operating menu IP-Addr 192. 168. 0. 0 s play 4 MA C 00 1 1B 6 00 0 MAC Addr 192. 168. 0. 1 Stand O F Standby OFF Res e 000 M AC 0 1B 6 00 0 01 Reset 000 save save esc esc 192. 168. 0. 0 Auto 0192. 168. 0. 1 00:1B:33:66:00:01 OFF a ndb y OFF 000 Reset to factory defaults ? Auto 000 Reset to factory defaults ? 192.
28 The operating menu Adjustment tips for the operating menu The following adju stment tips appl y to the operating menus of all receivers of the EM 3731 /3732 receiver family.
29 The operating menu The selected frequency bank and th e selected ch annel are set. The display changes to t he selectio n mode of the operating men u. Changing the receivin g frequency for a selected channel in the frequency bank “U” Tu n e Each receiver has seven frequency banks.
30 The operating menu Adjusting the squelch threshold Squelch Both receivers are equipped with a sq uelch that can be adjusted via the “ Squelch ” menu. The squelch eliminates annoying noise when the transmitter is switched off. It also suppresses sudden noise when there is no longer suffic ient transmitter power received b y the receiver.
31 The operating menu 왘 Change the settin g to “Booster Feed On” or “Booster Feed Off” by turning the jog dial 7 . 왘 Press the save butt on 8 . The selected setting is stored. When the boos ter supp ly voltage is switched on, the two LEDs N and S light up.
32 The operating menu external word clock generator is no t conn ected or switched off), the display for external word clock synchronization B starts flashi ng and the last set sampling rate remains active. The receiver’s audio outputs have a latency w hich depends on the sam- pling rate set in the “ Clock ” menu.
33 The operating menu 왘 Change to the setting mode of the “ Command ” menu. The current configuration starts fl ashing. 왘 Select one of the four config urations by turni ng the jog dial 7 . Note: If you do not want to use the command function, se lect the configuration “4”.
34 The operating menu Note: Af ter the scan, the channels that are occupied or subject to interference are marked with a warning triangle and the text “ Freq. occupied ” in the “ Tu n e ” menu. Starting the scan Scan new Via the “ Scan new ” menu, you can scan all frequency banks for free channels.
35 The operating menu Releasing channels that are us ed or subject to interference Scan reset After the scan, the channels that are occupied or subject to interference are marked with a warning triangle and the text “ Freq. occupied ” in the “ Tu n e ” menu.
36 The operating menu Selecting t he status display Display Via the “ Di splay ” menu, you can select the status display: 왘 Change to the setting mode of the “ Display ” menu. The current status display starts flashing. 왘 Select one of the four status displays by turning the jog dial 7 .
37 The operating menu To automatically obtai n an IP ad dress (d ynamic IP addressi ng): 왘 Change to the setting mode of the “ IP-Addr ” menu. The first byte starts f lashing. 왘 Press the jog dial 7 several times unti l the arrow points to “Auto”.
38 Additional informati on Additional information HiDyn plus ™ (HDP) noise reduction The EM 3731/3732 receivers are equ ipped with HDP , the Sennheiser noise reduction system that reduces RF inte rference. It increases the signal-to- noise ratio in wi reless audio transmission to more than 110 dB .
39 Additional information Diversity reception The receivers operate on the “true diversity” principle: A receiving antenna receives not only the electromagnetic waves wh ich reach it by a direct path, but also the reflections o f these waves which are created in the room by walls, window s, ceilings and fittings.
40 Additional informati on If a problem occurs ... If a problem occurs that is not listed in the above tabl e or if the problem cannot be solved with the proposed solution(s), please contact your lo cal Sennheiser agent for assistance.
41 Specifica tions Specifications RF characteristics Modulation wideband FM Frequency ranges 470–56 0 MHz 518–608 MHz 548–638 MHz 614–704 MHz 678–768 MHz 7 08–798 MHz 776–866 MHz 814–9.
42 Specifications Overall device Ambient temperature –10 °C to +55 °C Relative humidity max. 85 % Power supply 100 – 240 V AC, 50/60 Hz Current consumption max. 0.4 A Power consumption w ith receiver switched on: ma x. 20 W (50 V A) with receiver sw itched off, booster su pply voltage switched on: max.
43 Accessorie s/spare parts Accessories/spare parts The following accessories ar e available from your authorized dealer: Cat. No. Accessory 502195 A 3700 active broadband a ntenna 502197 AD 3700 acti.
44 Manufacturer Declarations Manufacturer Declarations W arranty regulations The guarantee period for this Sennheiser product is 24 months from the da te of purchase.
Sennheiser electronic GmbH & Co. KG Am Labor 1 30900 Wedemark, Germany Phone +49 (513 0) 600 0 Printed in Germany Fax +49 (5 130) 600 300 Publ. 01/08 www.
An important point after buying a device Sennheiser EM 3731 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sennheiser EM 3731 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sennheiser EM 3731 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sennheiser EM 3731 you will learn all the available features of the product, as well as information on its operation. The information that you get Sennheiser EM 3731 will certainly help you make a decision on the purchase.
If you already are a holder of Sennheiser EM 3731, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sennheiser EM 3731.
However, one of the most important roles played by the user manual is to help in solving problems with Sennheiser EM 3731. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sennheiser EM 3731 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
