EM 3731 EM 3732 EM 3732 Command Instructions for use A RF B % DEV 300 PEAK 100 100 30 10 µV 50 10 A M H z 790.800 03.03 BANK CH AF COM RF B % DEV 300 PEAK 100 100 30 10 µV 50 10 M H z 790.800 03.
Contents Important safety instructions ........................................................................... 2 Delivery includes .................................................................................................. 4 The EM 3731/3732 receiver family ................................................................. 5 The frequency bank system ........................................................................... 5 Overview of operating controls ........................................
Important safety instructions Important safety instructions 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9.
Important safety instructions Hazard warnings on the rear of the receiver The label shown on the left is attached to the rear of the device. The symbols on this label have the following meaning: This symbol is intended to alert the user to the presence of uninsulated dangerous voltage within the device’s enclosure that may be of sufficient magnitude to constitute risk of fire or electric shock. This symbol is intended to alert the user to the risk of electric shock if the device is opened.
Delivery includes Intended use of the receiver Intended use of the EM 3731 single receiver or the EM 3732 and EM 3732 Command twin receivers includes: y using the device for professional purposes, y having read these instructions, especially the chapter “Important safety instructions” on page 2, y using the device within the operating conditions and limitations described in this instruction manual.
The EM 3731/3732 receiver family The EM 3731/3732 receiver family The receivers of the EM 3731/3732 receiver family ensure highest reception reliability and offer unmatched ease of use. Due to their large switching bandwidth and numerous connection options, these receivers provide maximum flexibility in daily operation.
The EM 3731/3732 receiver family The receivers have seven frequency banks. Frequency bank 1 2 3 4 5 6 U Optimized for Optimized for maximum the maximum transmission number of reliability channels 1 The receiving frequencies are The receiving frequencies factory-preset (see enclosed can be freely selected 2 frequency table) and cannot be within the switching … changed. bandwidth. max.
Overview of operating controls Overview of operating controls A RF B % DEV 300 PEAK 100 100 30 50 10 μV 10 790.800 03.
Overview of the display Overview of the display 쐃 쐇 A RF 쐋 B 쐏 % DEV 300 PEAK 100 100 30 10 µV 50 10 쐂 쐆 M H z 790.800 03.03 BANK CH 쐄 쐊 쐅 AF COM 쐎 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 display “Dev” 쐄 Display of the squelch threshold For additional information see pages 9 and 10.
Indications and displays Indications and displays The displays provide information on the operating states of the corresponding receiver and those of the received transmitter. Reception display The reception display is permanently displayed. If you do not press a button on the transmitter, the display will dim after 60 seconds (see page 8).
Indications and displays Audio level display “Dev” 쐏 A RF B % DEV 300 PEAK 100 100 30 10 µV The audio level display “Dev” 쐏 shows the modulation of the received transmitter. When the transmitter’s audio input level is excessively high, the receiver’s audio level display “Dev” 쐏 shows more than 100 %. 50 10 When the transmitter is overmodulated frequently or for an extended period of time, the text “AF Peak” appears and the warning triangle for indicating error states 5 lights up red.
Indications and displays Transmitter battery status display The 6-step transmitter battery status display 쐊 provides information on the transmitter’s remaining battery/accupack capacity: Number of segments (Low Batt) Capacity Accupack Battery approx. 100 % full approx. 80 % - approx. 60 % half-full approx. 40 % - approx. 20 % - approx. 0 % almost empty Note: If no battery/accupack status signal is received, the battery status display is not shown.
Indications and displays LEDs for booster supply of antenna inputs The LEDs for booster supply of antenna input A N or B S light up when y the booster supply voltage is applied to the corresponding antenna input A O or B R. The LEDs for booster supply of antenna input A N or B S go off when y the booster supply voltage for the corresponding antenna input A O or B R is switched off or y the booster supply voltage is short-circuited or overloaded.
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 around and reduce the chance of damage to the receiver and to any surface on which it is placed by fixing the four soft rubber self adhesive feet to the base of the receiver in the positions indicated. Note: Do not fit the rubber feet when rack mounting the receiver.
Putting the receiver into operation The rack mount “ears” are already attached to the receiver at the factory. To mount the device into a 19" rack: 왘 Slide the receiver into the 19" rack. 왘 Secure the rack mount “ears” 1 to the rack using four screws (not included).
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. The GA 3030 AM antenna mount consists of: y 2 BNC extension cables (screw-in BNC socket W to BNC connector [) y 2 antenna holders Z y 4 screws y 2 washers Y y 2 nuts X 왘 Unsecure the rack mount “ears” 1 from the rack.
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 antenna position for optimum reception. 왘 Connect the remote antennas to the BNC sockets O and R at the rear of the receiver using a low-attenuation 50-Ω coaxial cable. Note: Ready-made antenna cables from Sennheiser are available as accessories with length of 1 m, 5 m and 10 m (see “Accessories/spare parts” on page 43).
Putting the receiver into operation Connecting the receiver to the mains/disconnecting the receiver from the mains CAUTION! Damage due to electric current! If you connect the receiver to an unsuitable power supply, this can cause damage to the device. 왘 Use the supplied mains cable to connect the receiver to the mains (100 to 240 V AC, 50 or 60 Hz). 왘 Ensure a reliable mains ground connection of the receiver – especially when you are using multi-outlet power strips or extension cables.
Putting the receiver into operation Connecting an external word clock generator The receiver can digitalize the audio signal and output it via the digital balanced XLR-3M audio output G. The built-in A/D converter supports sampling rates of 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz. If you want to connect an external word clock generator instead, proceed as follows: 왘 Use a shielded 75 Ω coaxial BNC cable to connect the external word clock generator to the BNC socket H. 왘 Select “Ext.
Using the receiver Scanning When you are working with the “Wireless Systems Manager” software, you can use the “Spectrum Analyzer” tool to perform a continuous frequency scan. The “Spectrum Analyzer“ tool uses the receiver that you select to check the relevant frequency range for signals and records the corresponding measured values. For detailed information, please refer to the chapter “The ’RF Spectrum Analyzer’ tool” of the “Wireless Systems Manager” manual.
Using the receiver Connecting the headphones/adjusting the volume CAUTION! Danger of hearing damage! Listening at high volume levels for long periods can lead to permanent hearing defects. 왘 Set the volume for the connected headphones to the minimum before putting the headphones on. The EM 3731 single receiver features a headphone output 2. The two receivers of the EM 3732 or EM 3732 Command twin receiver have a common headphone output 2.
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 suitable transmitters (e.g. SK 5212, SKM 5200 or SKP 3000).
The operating menu The operating menu Overview of menus Menu level Display Setting a receiving frequency (this frequency is automatically stored in channel “01” of the frequency bank “U” (user bank)). Switching between the frequency banks and Bank.
The operating menu Working with the operating menu By way of example of the “Tune” menu, this section describes how to use the operating menu. After switching the receiver on, the status display is shown on the display panel. M H z 790.800 03.03 BANK CH AF COM Getting into the operating menu 790. 800 MHz 1.01 Tune Bank B.Ch 왘 Press the jog dial. The status display is replaced by the operating menu. The “Tune” menu is displayed together with its current setting.
The operating menu Operating menu of the receivers Selection mode A RF B % DEV 300 PEAK 100 100 30 10 µV 50 10 Setting mode M H z 790.800 03.03 BANK CH AF COM esc B.Ch 790. 800 MHz 1.01 Tune Bank Receiving frequency 776 UHF B.Ch 790. 800 U.01 B.Ch MHz 866 790. 900 U.01 776 MHz UHF MHz 866 MHz Adjusting the receiving frequency (last three digits) Adjusting the receiving frequency (first three digits) save 90. 00 MHz 1.01 CEL une Bank.Ch Nam B.
The operating menu Selection mode 30 quelch Setting mode +12 AF O Booster +12 dB ooster +12 AF Out +18 dB +12 48 +18 Clock Audio output level Current audio output level Adjusting the audio output level (-10 dB to +18 dB) save 44.1 48 kHz 88.2 96 Ext. 3 18 F Out 2048 Clock Comm Sampling rate of the digital audio signal 44.1 48 kHz 88.2 96 Ext. 48 Current sampling rate 96 Adjusting the sampling rate (44.1, 48, 88.
The operating menu Selection mode mmand Setting mode More esc 1 Scan Displa Scanning the frequency banks for free channels Channel list Scan new Scan reset Displaying the list of free channels Channel list Scan new Scan reset Starting the scan Channel list Scan new Scan reset Releasing channels marked with “Freq.
The operating menu Selection mode Setting mode 1 Scan Displa 192 168 0 0 4 can Display 1 790.800 NAME IP-Ad Status display 790.800 B.CH AF Current status display 4 COM Selecting the contents of the status display save 4 splay 192. 168. 0. 0 00 1 1B 6 00 0 IP-Addr MAC 192. 168. 0. 0 Auto Receiver's IP address within the network 192. 168. 0. 1 Auto 192. 049. 068. Selecting IP bytes or “Auto” 0192. 168. 0. 1 Entering the IP address (0…255) save 192. 168. 0.
The operating menu Adjustment tips for the operating menu The following adjustment tips apply to the operating menus of all receivers of the EM 3731/3732 receiver family. Setting the receiving frequency Tune Via the “Tune” menu, you can: y set the receiver to a receiving frequency that can be freely selected within the preset frequency range. The receiving frequencies are tunable in 5-kHz increments within the switching bandwidth of 90 MHz max.
The operating menu The selected frequency bank and the selected channel are set. The display changes to the selection mode of the operating menu. Changing the receiving frequency for a selected channel in the frequency bank “U” Tune B.Ch U.01 776 790. 800 MHz 866 UHF MHz Each receiver has seven frequency banks. The frequency banks “1” to “6” have up to 60 channels that are factory-preset to a receiving frequency (see enclosed frequency tables).
The operating menu Adjusting the squelch threshold Squelch Both receivers are equipped with a squelch 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 sufficient transmitter power received by the receiver. The squelch can be adjusted in 13 steps from 0 to 30 μV. Selecting a smaller value reduces the squelch threshold, selecting a higher value increases the squelch threshold.
The operating menu 왘 Change the setting to “Booster Feed On” or “Booster Feed Off” by turning the jog dial 7. DEV 790.800 03.03 BANK CH save M H z AF COM digital audio processing sync esc sync 왘 Press the save button 8. The selected setting is stored. When the booster supply voltage is switched on, the two LEDs N and S light up. The display changes to the selection mode of the operating menu.
The operating menu external word clock generator is not connected or switched off), the display for external word clock synchronization B starts flashing and the last set sampling rate remains active. The receiver’s audio outputs have a latency which depends on the sampling rate set in the “Clock” menu. The below table shows these latency times as well the the distances to which they approximately correspond. Audio output Sampling rate Latency analog analog digital digital digital digital kHz 44.
The operating menu 왘 Change to the setting mode of the “Command” menu. The current configuration starts flashing. 1 AF AF COM 왘 Select one of the four configurations by turning the jog dial 7. DEV 790.800 03.03 BANK CH save M H z AF COM digital audio processing sync esc sync Note: If you do not want to use the command function, select the configuration “4”. 왘 Press the save button 8. The selected configuration is stored. The display changes to the selection mode of the operating menu.
The operating menu Freq. occupied B.Ch 790.800 MHz 1. Note: 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 “Tune” menu. Starting the scan Scan new Via the “Scan new” menu, you can scan all frequency banks for free channels. The last scan result is overwritten.
The operating menu Releasing channels that are used or subject to interference Scan reset 왘 Turn the jog dial 7 until the arrow points to “Scan reset”. Channel list Scan new Scan reset Bank Free Bank Free 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 “Tune” menu. Via the “Scan reset” menu, you can unmark these channels. The last scan result is deleted. 왘 Press the jog dial 7.
The operating menu Selecting the status display Display Via the “Display” menu, you can select the status display: 1. 2. 3. 4. Contents of the display 790.800 NAME M H z “Bank/Channel” displays the frequency bank and the channel number 790.800 M H z “Name/Command” displays the freely selectable name and the command display (EM 3732 Command receiver only) 790.800 NAME M H z 790.
The operating menu To automatically obtain an IP address (dynamic IP addressing): 왘 Change to the setting mode of the “IP-Addr” menu. The first byte starts flashing. 왘 Press the jog dial 7 several times until the arrow points to “Auto”. 왘 Press the save button 8. 왘 Switch the receiver off and on again (see “Switching the receiver on/ off” on page 19). The new IP address becomes effective.
Additional information Additional information HiDyn plus™ (HDP) noise reduction RF link Inherent noise of the RF link Transmitter Receiver The EM 3731/3732 receivers are equipped with HDP, the Sennheiser noise reduction system that reduces RF interference. It increases the signal-tonoise ratio in wireless audio transmission to more than 110 dB.
Additional information Diversity reception The receivers operate 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”. Repositioning the receiving antenna can bring a solution.
Additional information If a problem occurs ...
Specifications Specifications RF characteristics Modulation wideband FM Frequency ranges 470–560 MHz 518–608 MHz 548–638 MHz 614–704 MHz 678–768 MHz 708–798 MHz 776–866 MHz 814–904 MHz 870–960 MHz Receiving frequencies (per receiver RX 1 or RX 2) 6 frequency banks with up to 60 factory-preset frequencies each, 1 frequency bank with up to 60 freely selectable frequencies (tunable in 5-kHz increments) Switching bandwidth 90 MHz Frequency stability ≤ ±2.
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 with receiver switched on: max. 20 W (50 VA) with receiver switched off, booster supply voltage switched on: max. 9.5 W with receiver and booster supply voltage switched off: max.
Accessories/spare parts Accessories/spare parts The following accessories are available from your authorized dealer: Cat. No. Accessory Cat. No. Accessory 502195 A 3700 active broadband antenna 004368 GA 3030 AM antenna mount 502197 AD 3700 active broadband directional antennna 087969 Antenna daisy chain cable, 50 Ω, BNC, 0.25 m 087972 502196 AB 3700 antenna booster Word clock daisy chain cable, 75 Ω, BNC, 0.
Manufacturer Declarations Manufacturer Declarations Warranty regulations The guarantee period for this Sennheiser product is 24 months from the date of purchase. Excluded are accessory items, rechargeable or disposable batteries that are delivered with the product; due to their characteristics these products have a shorter service life that is principally dependent on the individual frequency of use. The guarantee period starts from the date of original purchase.
Sennheiser electronic GmbH & Co. KG Am Labor 1 30900 Wedemark, Germany Phone +49 (5130) 600 0 Printed in Germany Fax +49 (5130) 600 300 Publ. 01/08 www.sennheiser.