Sennheiser EM 3031, EM 3031-U, EM 3031-V, EM 3032 Datasheet
EM 3031
RF Wireless Systems | 3000 Series Receivers
General Features
j
Up to 32 programmable receiving frequencies per receiver
j
Switching bandwidth max. 24 MHz (UHF) or 7 MHz (VHF)
j
HiDyn plus™ noise reduction system with 117 dB(A)
rms
signal-to-noise ratio
j
Multi-function LC display panel
j
Indication of transmitter battery status (only with Sennheiser
transmitters transmitting battery status information)
j
19” 1 U metal housing with built-in mains power supply unit
j
Suitable for multi-channel applications
EM 1031
j
True diversity receiver, 19” 1 U housing
j
LC display for frequency, RF and AF level
j
Headphone output
j
Delivery includes: 1 EM 3031 receiver, 2 telescopic antennas
1 mains cable, 19” rack mount ears
General Description
The EM 3031 is a true diversity receiver in a 19” 1 U rack housing. 32 programmable
receiving frequencies ensure flexible channel selection and make this receiver an
ideal choice for OB applications or for use in sh ows.
Technical Data EM 3031-U
Type of receiver .................................32-channel receiver
Receiving frequencies .............................................max. 32
Frequency range........................................... 450–960 MHz
Switching bandwidth .............................................. 24 MHz
Modul ation...................................................... wideband FM
Nomina l/peak deviation ................ ± 40 kHz / ± 56 kHz
RF squelch ....................................... 0–100 µV, adjustab le
Signal-to-noise ratio .................................. > 117 dB(A)
rms
Noise reduction system ................................. HiDyn plus™
AF frequency response ............... 45–20,000 Hz (–3 dB)
THD (1 kHz) ........................................ ≤ 0.4 % (typ. 0.2 %)
RF inputs.............................................. 2 BNC sockets, 50 Ω
AF output voltage,
balanced XLR:.............................max. 18 dBU, adjustab le
Headph one output.................... max. 12 dBU, adjustab le
Output impedance..................................................... ≥ 50 Ω
Power supply ...............115 / 230 V AC (+10 % / –15 %)
Housin g .......................................................................19“, 1 U
Dimensions .......................................... 436 x 43 x 215 mm
Weight .............................................................approx. 3.5 kg
In compliance with ......................................... ETS 300 422
Technical Data EM 3031-V
Type of receiver .................................32-channel receiver
Receiving frequencies .............................................max. 32
Frequency range ...........................................138–250 MHz
Switching bandwidth ................................................. 7 MHz
Modul ation...................................................... wideband FM
Nomina l/peak deviation ................ ± 40 kHz / ± 56 kHz
RF squelch ....................................... 0–100 µV, adjustab le
Signal-to-noise ratio .................................. > 117 dB(A)
rms
Noise reduction system ................................. HiDy n pl us™
AF frequency response ............... 45–20,000 Hz (–3 dB)
THD (1 kHz) ........................................ ≤ 0.4 % (typ. 0.2 %)
RF inputs.............................................. 2 BNC sockets, 50 Ω
AF output voltage,
balanced XLR:.............................max. 18 dBU, adjustab le
Headph one output.................... max. 12 dBU, adjustab le
Output impedance..................................................... ≥ 50 Ω
Power supply ...............115 / 230 V AC (+10 % / –15 %)
Housin g .......................................................................19“, 1 U
Dimensions .......................................... 436 x 43 x 215 mm
Weight .............................................................approx. 3.5 kg
In compliance with ......................................... ETS 300 422
EM 3031-U Cat. No. 009250
EM 3031-V Cat. No. 009278
Th e EM 3031 and EM 3032 receivers are fitted with an adjusta b le RF s quelc h, wh ic h
mutes the audio output when the antenna voltage drops below the chosen threshol d. The sq uelc h can be adjusted between 0 and approx. 100 µV. W hen the sq uelc h
has been triggered, the “MUTE” warning will light up on the receiver display. The
receivers are additionally equipped with an AMF advanced muting function.
This muting function is triggered when the RF signal suddenly drops by approx.
50 dB. The receiver will then be muted for about 3 seconds to avoid the annoying
crackling noise which is caused when a transmitter is switched of f.
The EM 3031 and EM 3032 receivers have a headp hone output for monitoring the
incoming audio signal; the monitoring signal is mono. Sennheiser’s closed HD 25
headphones are an ideal choice for monitoring purposes. In order to enable monitor ing even in unfavourab le conditions (e.g. low AF signal level from the transmitter)
and with high ambient noise (on the stage, for example), the signal from the
headphone output is up to 30 dB louder than the LINE output signal. However, this
may lead to distortion if the level of the incoming signal is quite high and if the
volume control is turned up. In this case, turn back the volume until the distortion
disappears. If the sound remains distorted, the transmitter itself is overmodu lated.
The Sennheiser transmitter range includes many models which transmit battery
status information. The EM 3031 and EM 3032 receivers are able to receive this
status information. They display the remaining battery or accupack capacity of the
transmitter in %. When the battery is going flat and the remaining capacity lasts for
only 20 to 30 minutes of operation, the “LOW BATT” warning on the displ ay starts
flashing. You should immediately replace the transmitter battery.
EM 3031/EM 3032
RF Wireless Systems | 3000 Series Receivers
Operating controls of the EM 3031 and EM 3032 – back panel
EM 3031 EM 3032
7 Fuse holder and mains voltage selector
8 Mains connector
9 Squelch control
10 Cable grip
11 Service interface (not used during normal operation)
12 Bal anced XLR-3 audio output
13 AF level control for audio output
14 Antenna socket B
15 A ntenn a soc ket A
7 8 9 1110 12 13 14 15 7 8 9 1110 12 13 14 159 11 12 13
Mounting the telescopic antennas
Using the cab le grip for the mains cable
Loading...