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EM 3731
EM 3732
EM 3732 Command
Instructions for use
A RF B % DEV A RF B % DEV
M M
H H
300 PEAK 300 PEAK
790.800 z 790.800 z
100 100 100 100
30 BANK 30 BANK
50 AF COM 50 AF COM
10 03.03 CH 10 03.03 CH
µV 10 µV 10
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Contents Important safety instructions ........................................................................... 2 Delivery includes .................................................................................................. 4 The EM 3731/3732 receiver family ................................................................. 5 The frequency bank system ........................................................................... 5 Overview of operating controls ............................
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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. Do not
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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. There
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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: using the device for professional purposes, having read these instructions, especially the chapter “Important safety instructions” on page 2, using the device within the operating conditions and limitations described in this instruction manual. “Improper use” means using the receiver other than as described in these instructions, or under oper
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The EM 3731/3732 receiver family The EM 3731/3732 receiver family The receivers of the EM3731/3732 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 is comprised of the following models: EM 3732 Command twin receiver EM 3732 twin receiver EM 3731 single receiver All EM 3731/3732 receivers ha
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The EM 3731/3732 receiver family The receivers have seven frequency banks. Frequency bank Channel 1 2 3 4 5 6 U Optimized for Optimized for the maximum maximum number of transmission channels reliability 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. 60 CAUTION! Risk of reception interference! If – within the receiver’s frequency range – transmitte
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Overview of operating controls Overview of operating controls A B A B RF % DEV M RF % DEV M 300 H 300 H PEAK PEAK 790.800 z 790.800 z 100 100 100 100 30 30 BANK AF BANK AF 50 COM 50 COM 10 03.03 CH 10 03.03 CH 10 10 μV μV A Front panel I BNC socket for word clock daisy chain output (75 Ω) 1 Rack mount “ears” J XLR-3 socket (male) for Command output 2*, balanced (EM 3732 Command twin receiver only) 2 Headphone output, ¼“ (6.3 mm) jack socket K XLR-3 socket (male) for audio output AF out 2*,
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Overview of the display Overview of the display A B RF % DEV M H 300 PEAK 790.800 z 100 100 30 BANK AF 50 COM 10 03.03 CH 10 µV Reception display RF level display “RF” for antenna A Diversity display (antenna A or antenna B active) RF level display “RF” for antenna B Audio level display “Dev” Display of the squelch threshold For additional information see pages 9 and 10. Status display Frequency display “MHz” – appears when the frequency is displayed 6-ste
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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). RF level display “RF” for the antennas The left bargraph shows the strength of the received RF signal for antenna A; the right bargraph shows the stren
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Indications and displays Audio level display “Dev” The audio level display “Dev” shows the modulation of the received transmitter. A RF B % DEV 300 PEAK When the transmitter’s audio input level is excessively high, the receiver’s 100 100 audio level display “Dev” shows more than 100 %. 30 50 10 10 µV When the transmitter is overmodulated frequently or for an extended period of time, the text “AF Peak” appears and the warning triangle for AF Peak indicating error states 5 lights up red
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Indications and displays Transmitter battery status display The 6-step transmitter battery status display provides information on the transmitter’s remaining battery/accupack capacity: Capacity Number of segments Accupack Battery approx. 100 % full approx. 80 % - approx. 60 % half-full approx. 40 % - approx. 20 % - (Low Batt) approx. 0 % almost empty Note: If no battery/accupack status signal is received, the battery status display is not shown. When the battery/accupack is almost empty, text
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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 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 the booster supply voltage for the corresponding antenna input A O or B R is switched off or the booster supply voltage is short-circuited or overloaded. 12
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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. CAUTION! Risk of staining of furniture surfaces! Some furniture
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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: Slide the receiver into the 19" rack. Secure the rack mount “ears” 1 to the rack using four screws (not included). Connecting the antennas CAUTION! Danger of short-circuit due to uninsulated antennas! If you switch the booster supply voltage on, a 12 V DC voltage is applied to the antennas – even when you switch the receiver off! If uninsulated a
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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: 2 BNC extension cables (screw-in BNC socket W to BNC connector [) 2 antenna holders Z 4 screws 2 washers Y 2 nuts X Unsecure the rack mount “ears” 1 from the rack. Guide the BNC cables through the holes in
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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. 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). If you c
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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. Use the supplied mains cable to connect the receiver to the mains (100 to 240 V AC, 50 or 60 Hz). Ensure a reliable mains ground connection of the receiver – especially when you are using multi-outlet power strips or extension cables. The rece
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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: Use a shielded 75 Ω coaxial BNC cable to connect the external word clock generator to the BNC socket H. Select “Ext.” in the “Clock
