SENNHEISER EM 3732-II Service Manual

Cover page of SENNHEISER EM 3732-II Service Manual

Service Manual for SENNHEISER EM 3732-II, downloadable as a PDF file.

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FEATURES
AES3 digital audio output with external
word clock synchronization
Switching bandwidth up to 184 MHz
Integrated antenna splitter for daisy-
chaining up to 8 devices
Intuitive user interface with OLED
display
Network integration via Ethernet for
WSM software on Macs and PCs
ARCHITECT'S
SPECIFICATIONS
The EM 3731/3732-II is a true diversity receiver that is characterized
by high transmission reliability, exceptional audio quality and simple operati-
on. The frequencies are adjustable in 5 kHz steps. Special features include the
DSP-based HiDyn plus expander and its transformer-balanced audio outputs.
The EM 3732 COM-II is also equipped with a command audio output. The EM
3731/3732-II is available in L, N and P frequency range variants and as a twin
receiver (EM 3732-II) or single receiver (EM 3731-II).
TECHNICAL DATA
Receiver principle.................................................True diversity
Frequency ranges ................................................L: 470 ­ 638 MHz
N: 614 ­ 798 MHz
P: 776 ­ 960 MHz
Switching bandwidth..........................................Up to 184 MHz
Receiving frequencies.........................................6 frequency banks, each with up to
59 factory-preset channels, 1 fre-
quency bank with up to 60 freely
tunable channels (in 5 kHz steps)
Frequency stability..............................................
±2.5 ppm
Sensitivity .............................................................typ. 1.5 V for 52 dBA rms S/N
(with HDP, peak deviation)
15 V for 115 dBA rms S/N
Adjacent channel rejection/spacing typ.........75 dB/±400 kHz 80 dB/±800 kHz
Intermodulation attenuation ............................
80 dB
Blocking .................................................................
80 dB
Squelch ..................................................................13 steps (0 ... 30 V)
Antenna inputs ....................................................2 BNC sockets (50 V)
Daisy chain outputs ............................................2 BNC sockets (50 V)
Gain ........................................................................0.5 dB ±0.5 dB (ref. to antenna
inputs)
Compander............................................................Sennheiser HiDyn plusTM
Frequenze response ............................................40 ... 20,000 Hz
Nominal/peak deviation ....................................±40 kHz / ±56 kHz
Signal-to-noise ratio ...........................................
118 dB(A) (1 mV, peak deviation)
THD ......................................................................... 0.3% (at nominal deviation, 1 kHz)
Latency ..................................................................
1.9 ms
Continued on page 2
EM 3732-II
high transmission receiver
background image
FEATURES
AES3 digital audio output with external
word clock synchronization
Switching bandwidth up to 184 MHz
Integrated antenna splitter for daisy-
chaining up to 8 devices
Intuitive user interface with OLED
display
Network integration via Ethernet for
WSM software on Macs and PCs
ARCHITECT'S
SPECIFICATIONS
The EM 3731/3732-II is a true diversity receiver that is characterized
by high transmission reliability, exceptional audio quality and simple operati-
on. The frequencies are adjustable in 5 kHz steps. Special features include the
DSP-based HiDyn plus expander and its transformer-balanced audio outputs.
The EM 3732 COM-II is also equipped with a command audio output. The EM
3731/3732-II is available in L, N and P frequency range variants and as a twin
receiver (EM 3732-II) or single receiver (EM 3731-II).
TECHNICAL DATA
Receiver principle.................................................True diversity
Frequency ranges ................................................L: 470 ­ 638 MHz
N: 614 ­ 798 MHz
P: 776 ­ 960 MHz
Switching bandwidth..........................................Up to 184 MHz
Receiving frequencies.........................................6 frequency banks, each with up to
59 factory-preset channels, 1 fre-
quency bank with up to 60 freely
tunable channels (in 5 kHz steps)
Frequency stability..............................................
±2.5 ppm
Sensitivity .............................................................typ. 1.5 V for 52 dBA rms S/N
(with HDP, peak deviation)
15 V for 115 dBA rms S/N
Adjacent channel rejection/spacing typ.........75 dB/±400 kHz 80 dB/±800 kHz
Intermodulation attenuation ............................
80 dB
Blocking .................................................................
80 dB
Squelch ..................................................................13 steps (0 ... 30 V)
Antenna inputs ....................................................2 BNC sockets (50 V)
Daisy chain outputs ............................................2 BNC sockets (50 V)
Gain ........................................................................0.5 dB ±0.5 dB (ref. to antenna
inputs)
Compander............................................................Sennheiser HiDyn plusTM
Frequenze response ............................................40 ... 20,000 Hz
Nominal/peak deviation ....................................±40 kHz / ±56 kHz
Signal-to-noise ratio ...........................................
118 dB(A) (1 mV, peak deviation)
THD ......................................................................... 0.3% (at nominal deviation, 1 kHz)
Latency ..................................................................
1.9 ms
Continued on page 2
EM 3732-II
high transmission receiver
background image
AF output voltage................................................+18 dBu to ­10 dBu, adjustable in
(at peak deviation, 1 kHz AF) ..........................1 dB steps (transformer-balanced)
AF output sockets................................................1 XLR-3 socket per receiver,
2 per EM 3732-II COM receiver
Headphone output ..............................................2 x 100 mW at 32 V, internal resis-
tance 10 V, short-circuit-proof
OVERALL DEVICE
Power supply ........................................................100 ­ 240 V AC, 50 / 60 Hz
Current consumption ..........................................Max. 0.4 A
Power consumption ............................................On: max. 20 W (50 VA)
Device off, booster supply voltage
on:
max. 9.5 W
Device and booster supply voltage
off:
max. 4 W
IEC mains connector ............................................3-pin; protection class I,
as per IEC/EN 60320-1
Booster voltage....................................................12 V DC, 2 x max. 200 mA, short-
circuit-proof, can be switched off
Ethernet.................................................................IEEE 802.3-2002, shielded RJ45
connector with optional additional
latch
Digital output .......................................................AES3-2003, XLR-3, 44.1, 48, 88.2
or 96 kHz SR, 24 bit, externally
synchronizable
Continued on page 3
EM 3732-II
high transmission receiver
background image
Word clock connection........................................2 BNC sockets (75 V),
daisy chain output
Accepted sampling rates....................................44.1, 48, 88.2 or 96 kHz
Word clock input impedance.............................75 V, transformer-balanced,
AC-coupled
Input voltage range ............................................200 mV ... 5 Vpp
Max. input voltage ..............................................15 V (DC + AC)
Word clock output impedance ..........................75 V, transformer-balanced,
AC-coupled
Output voltage.....................................................2.5 V ± 250 mV at 75 V source
impedance
Dimensions ...........................................................Approx. 436 x 215 x 44 mm
(excl. rack mount ears)
Weight ...................................................................Approx. 3,600 g
(excl. rack mount ears)
Approx. 4,080 g
(incl. rack mount ears)
OPERATING CONDITIONS
Ambient temperature.........................................-10 °C to +55 °C
Relative humidity ................................................Max. 85% at 40°C
(non-condensing)
Drip and splash water protection: The product may not be exposed to drip and
splash water (IP 20)
EM 3732-II
high transmission receiver
background image
DIMENSIONS
FREQUENCY RESPONSE
PRODUCT VARIANTS
EM 3731-II L, 470 - 638 MHz
Cat.No. 504073
EM 3731-II N, 614 - 798 MHz
Cat.No. 504074
EM 3731-II P, 776 - 960 MHz
Cat.No. 504075
EM 3732-II L, 470 - 638 MHz
Cat.No. 504076
EM 3732-II N, 614 - 798 MHz
Cat.No. 504077
EM 3732-II P, 776 - 960 MHz
Cat.No. 504078
EM 3732 COM-II L, 470 - 638 MHz
Cat.No. 504079
EM 3732 COM-II N, 614 - 798 MHz
Cat.No. 504080
EM 3732 COM-II P, 776 - 960 MHz
Cat.No. 504081
RECOMMENDED ACCESSORIES
AAB 3700, broadband antenna booster
Cat.No. 502196
AD 3700, directional antenna
Cat.No. 502197
A 3700, omni-directional antenna
Cat.No. 502195
GZL AES 10, AES3 cable
Cat.No. 502432
EM 3732-II high transmission receiver
Sennheiser electronic GmbH & Co. KG
Am Labor 1, 30900 Wedemark, Germany
www.sennheiser.com
06/10
Sennheiser
is
a
registered
trademark
of
Sennheiser
electronic
GmbH
&
Co.
K
G.
www.sennheiser.com.
Copyright
©
2010.
All
rights
reserved.
Errors
and
omissions
excepted.
Contact your local Service Partner:

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