Sennheiser EM 3731-II Home Theater System User Manual


 
Specifications
46
Specifications
RF characteristics
Modulation wideband FM
Frequency ranges Range 1 (L): 470 to 638 MHz
Range 2 (N): 614 to 798 MHz
Range 3 (P): 776 to 960 MHz
Receiving frequencies
(per receiver RX 1 or RX 2)
6 frequency banks with up to 59 factory-preset frequencies each,
1 frequency bank with up to 60 freely selectable frequencies (tuneable in
5-kHz steps)
Switching bandwidth up to 184 MHz
Frequency stability ±2.5 ppm
Receiver principle true diversity
Sensitivity
(with HDP, peak deviation)
typ. 1.5 μV at 52 dB(A)rms S/N
typ. 15 μV at 115 dB(A)rms S/N
Adjacent channel rejection/
spacing
typ. 75 dB/±400 kHz
typ. 80 dB/±800 kHz
Intermodulation attenuation 80 dB
Blocking 80 dB
Squelch 13 steps (0 … 30 μV)
Antenna inputs 2 BNC sockets (50 Ω)
Daisy chain outputs 2 BNC sockets (50 Ω)
amplification: 0 dB ± 0.5 dB (related to the antenna inputs)
184 MHz typ. bandwidth (range)
AF characteristics
Compander system Sennheiser HiDyn plus™, DSP-emulated
AF bandwidth 40–20,000 Hz
Latency 1.9 ms
Nominal/peak deviation ±40 kHz/±56 kHz
Signal-to-noise ratio
(1 mV, peak deviation) 118 dB(A) at +18 dBu/+4 dBu(AF Out)
THD (nominal deviation, 1 kHz) 0.3 %
AF output voltage
(peak deviation, 1 kHz
AF
) +18 dBu to –10 dBu, adjustable in 1-dB steps (transformer balanced)
AF output sockets 1 XLR-3 socket per receiver, 2 XLR-3 sockets per EM 3732-II COM receiver
Headphone output 2 x 100 mW at 32 Ω
10 Ω internal impedance
short-circuit proof