Technical Data - Sennheiser EM 3031-U Service Manual

4 TECHNICAL DATA

Frequency range ................................................................................ UHF: 430 MHz - 960 MHz
Switching bandwidth .......................................................................... UHF: 24 MHz
Frequency stability ............................................................................. UHF: ± 10 ppm (- 10 °C to + 55 °C)
Receiver frequencies ......................................................................... EM 3031, EM 3032: max. 32, pre-programmed
Channel spacing (min.) ....................................................................... 300 kHz
Channel grid (min.) ............................................................................. 5 kHz
1st oscillator frequency (1. LO) .......................................................... UHF: 65.75 MHz below receiver frequency
1st intermediate frequency (1. IF) ...................................................... UHF: 65.75 MHz
2nd oscillator frequency (2. LO) ......................................................... UHF: 76.45 MHz (optional 55.05 MHz)
2nd intermediate frequency (2. IF) ..................................................... UHF: 10.7 MHz
De-emphasis ...................................................................................... 50 µs
Modulation ......................................................................................... wideband FM
Nominal deviation ............................................................................... ± 40 kHz
Peak deviation .................................................................................... ± 56 kHz
Nominal AF output level ..................................................................... + 12 dBu
Peak AF output level .......................................................................... + 17.5 dBu ± 1 dBu
Monitor level ...................................................................................... + 12 dBu, max. amplification = 30 dB
THD at 1 kHz and nominal deviation .................................................. ≤ 0.5 %, typ. 0.25 %
AF frequency response (+ 1 dB/- 2 dB) .............................................. 45 Hz - 20 kHz
Compander system ............................................................................ HiDyn plus
Squelch .............................................................................................. EM 3031, EM 3032: 0 - 100 µV, adjustable (rear side)
Sensitivity S/N = 52 dB (unweighted with HiDyn plus ) ....................... EM 3031: ≤ 1.0 µV
S/N = 90 dBA (peak deviation with HiDyn plus ) .................................. ≤ 5 µV
S/N = 115 dBA (peak deviation with HiDyn plus ) ................................ ≤ 15 µV
S/N max. (1 mV, peak deviation with HiDyn plus ) ............................... 120 dBA eff
Limiter threshold ................................................................................ EM 3031: ≤ 1.0 µV
Intermodulation attenuation ............................................................... ≥ 66 dB
Adjacent channel rejection ................................................................. ≥ 75 dB
Image rejection .................................................................................. ≥ 50 dB, typ. 65 dB
Free field interference radiation ......................................................... ≤ - 57 dBm at the AF output
Antenna inputs ................................................................................... 2 BNC sockets
Antenna input impedance .................................................................. 50 Ω
AF outputs .......................................................................................... LINE:
AF output voltage at peak deviation ................................................... LINE:
Source impedance of AF output ........................................................ ≤ 50 Ω (LINE at max. level)
Temperature range ............................................................................. - 10 °C to + 55 °C
Power supply ..................................................................................... 115 / 230 V AC + 10 % / - 15 %
Power consumption ........................................................................... EM 3031: 10 VA
Dimensions (without rack mount ears) .............................................. 436 x 228 x 43 mm (19", 1 U)
Weight ................................................................................................ EM 3031: approx. 3300 g
VHF: 138 MHz - 260 MHz
VHF: 7 MHz
VHF: ± 20 ppm (- 10 °C to + 55 °C)
EM 3532: max. 32 programmable in channel grid
VHF: 10.7 MHz below receiver frequency
VHF: 10.7 MHz
EM 3532: 0 - 100 µV, programmable (menue)
EM 3032, EM 3532: ≤ 1.5 µV
116 dB eff
106 dB CCIR peak
EM 3032, EM 3532: ≤ 1.5 µV
3-pin XLR, transformer-balanced
MONITOR: 1/4" (6.3 mm) ø jack plug, unbalanced
0 - 5.6 V, adjustable, ≥ 2 kΩ
MONITOR: 0 - 2.8 V, adjustable, ≥ 600 Ω
EM 3032, EM 3532: 15 VA
EM 3032, EM 3532: approx. 4000 g
EM 3031, 3032, 3532
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