Sennheiser HMEC 250 - 06-07 User Manual download pdf (Page 14)

Technical Data

Frequency range ...................470 – 866 MHz

Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . bypass (-3 dB), 5, 10, 15 dB;

- 6dB without booster feed

OIP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32 dBm

Power supply . . . . . . . . . . . . . . . . . . . . . . 9 - 15 V DC / 160 mA - 100 mA,

DC feed via via antenna cable

Display of adjusted gain . . . . . . . . . . . . Multi-colour LEDs

Mounting thread ................... 3/8" and 5/8"

Input/output ...................... BNC

Impedance . . . . . . . . . . . . . . . . . . . . . . . . 50 O

Front-to-back ratio (AD 3700) .......  14 dB

Antenna characteristics (AD 3700) . . Directional antenna, opening angle: 100°

Antenna characteristics (A 3700) .... Omni-directional antenna

AB 3700 / AD 3700 / A 3700

RF characteristics

Receiver principle . . . . . . . . . . . . . . . . . . true diversity

Frequency ranges L: 470 to 638 MHz

N: 614 to 798 MHz

P: 776 to 960 MHz

Switching bandwidth . . . . . . . . . . . . . . up to 184 MHz

Receiving frequencies . . . . . . . . . . . . . . 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)

Frequency stability ................. ≤ ±2.5 ppm

Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . typ. 1.5 µV at 52 dB(A)rms S/N

(with HDP, peak deviation) typ. 15 µV at 115 dB(A)rms S/N

Adjacent channel rejection/ ......... typ. 75 dB/±400kHz

spacing typ. 80 dB/±800kHz

Intermodulation attenuation ....... ≥ 80 dB

Blocking . . . . . . . . . . . . . . . . . . . . . . . . . . ≥ 80 dB

Squelch ........................... 13 steps (0 … 30µV)

Antenna inputs . . . . . . . . . . . . . . . . . . . . 2 BNC sockets (50 O)

Daisy chain outputs ................ 2 BNC sockets (50 O)

ampliﬁcation: 0 dB ± 0.5dB

(related to the antenna inputs)

AF characteristics

Compander system . . . . . . . . . . . . . . . . Sennheiser HiDyn

plus

™ and Sennheiser HDX,

DSP-emulated

AF bandwidth ..................... 40 – 20,000 Hz

Nominal/peak deviation ............ ± 40 kHz/±56 kHz

Signal-to-noise ratio ...............≥ 118 dB(A) at +18 dBu/+4 dBu(AF Out)

(1 mV, peak deviation)

THD (at 1 kHz, nominal deviation) ... ≤ 0.3%

Latency ........................... ≤ 1.9 ms

AF output voltage . . . . . . . . . . . . . . . . . +18 dBu to –10 dBu, adjustable in

(peak deviation, 1 kHz

) 1-dB steps (transformer balanced)

AF output sockets . . . . . . . . . . . . . . . . . 1 XLR-3 socket per receiver,

2 XLR-3 sockets per EM3732-II COM receiver

Headphone output ................. 2 x 100 mW at 32 O, 10 O internal impedance

short-circuit proof

Overall device

Power supply . . . . . . . . . . . . . . . . . . . . . . 100 to 240 V~, 50/60Hz

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

Mains connector ................... 3-pin, protection class I, as per IEC/EN 60320-1

Booster supply . . . . . . . . . . . . . . . . . . . . 12 V DC via antenna socket

max. 200 mA each, short-circuit proof, switchable

Ethernet .......................... IEEE 802.3-2002, shielded RJ 45 socket with

optional locking facility

Digital output ..................... AES3-2003, XLR-3, 44.1, 48, 88.2 or 96 kHz SR,

24 bits, externally synchronizable

Word clock connection . . . . . . . . . . . . . 2 BNC sockets (75 O), daisy chain output

Accepted sampling rates . . . . . . . . . . . 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz

Word clock input ................... 7 5 O, transformer balanced, AC-coupled

input voltage range 200 mV … 5 Vpp

max. input voltage 15 V (DC + AC)

Word clock output ................. transformer balanced, AC-coupled

output voltage 2.5 V± 250 mV at 75 O source

impedance

Dimensions W x D x H [mm] . . . . . . . . 436 x 215 x 44 (without rack mount “ears”)

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . approx. 4080 g (incl. rack mount “ears”)

approx. 3600 g (without rack mount “ears”)

EM 3731-II / EM 3732-II / EM 3732 COM-II

RF characteristics

Frequency ranges . . . . . . . . . . . . . . . . . . L: 470 to 638 MHz

N: 614 to 798 MHz , N-US: 614 to 697.9 MHz

P: 776 to 866 MHz

Switching bandwidth ............... up to 184 MHz

Transmission frequencies ........... frequency bank “FIX” with up to

59 factory-preset frequencies

frequency bank “VAR” with 20 freely

selectable frequencies

(frequencies tuneable in steps of 5 kHz)

RF output power ................... switchable,

typ.: 50 mW (PWR.Hi)

10 mW (PWR.LO)

10 mW (PWR.LoI)

Frequency stability ................ ± 10 ppm in speciﬁed temperature range

AF characteristics

Compander system . . . . . . . . . . . . . . . . Sennheiser HiDyn

plus

™

AF frequency response ............. 60 – 20,000 Hz

Nominal/peak deviation . . . . . . . . . . . ± 40 kHz/± 56 kHz

Signal-to-noise ratio ...............typ. 110 dB(A)

rms

THD (at 1 kHz, nominal deviation) ... < 0,3%

Sensitivity ........................ adjustable in steps of 1 dB from –30 to +40 dB

Input sensitivity at nominal deviation

. . –40 dBu = 7,75 mV

Low-cut frequency (–3 dB) . . . . . . . . . adjustable (ﬂat, 120 Hz)

Overall device

Power supply . . . . . . . . . . . . . . . . . . . . . 1 AA size battery, 1,5 V

Operating time .................... PWR.LO: approx. 10 hrs

PWR.HI: approx. 5.5 hrs

PWR.LoI: approx. 5.5 hrs

Connectors . . . . . . . . . . . . . . . . . . . . . . . . AF: 3-pin special audio socket

RF: coax socket

Dimensions . . . . . . . . . . . . . . . . . . . . . . . approx. 53 x 60 x 17 mm

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . approx. 120 g incl. battery and antenna

SK 5212-II

RF characteristics

Frequency ranges . . . . . . . . . . . . . . . . . . L: 470 to 638 MHz

N: 614 to 798 MHz , N-US: 614 to 697.9 MHz

P: 776 to 866 MHz

Switching bandwidth ............... up to 184 MHz

Transmission frequencies ........... frequency bank “FIX” with up to

59 factory-preset frequencies

frequency bank “VAR” with 20 freely

selectable frequencies

(frequencies tuneable in steps of 5 kHz)

RF output power ................... switchable,

typ.: 50 mW (PWR.Hi)

10 mW (PWR.LO)

10 mW (PWR.LoI)

Frequency stability ................. ±10 ppm in speciﬁed temperature range

AF characteristics

Compander system . . . . . . . . . . . . . . . . Sennheiser HiDyn

plus

™

AF frequency response . . . . . . . . . . . . . 60 – 20,000 Hz

Nominal/peak deviation . . . . . . . . . . . . ± 40 kHz/± 56 kHz

Signal-to-noise ratio . . . . . . . . . . . . . . . typ. 110 dB (A)

rms

THD (at 1 kHz, nominal deviation) . . . < 0.5%

Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . adjustable in steps of 1 dB from –40 to 0 dB

Low-cut frequency (-3dB) ........... adjustable (ﬂat, 120 Hz, 190 Hz)

Overall device

Power supply . . . . . . . . . . . . . . . . . . . . . . B 5000-2: 1.5 V AA primary cells or

BA 5000-2: rechargeable battery pack

Operating time . . . . . . . . . . . . . . . . . . . . with B 5000-2:

PWR.LO: approx. 13 hrs

PWR.HI: approx. 7.5 hrs

PWR.LoI: approx. 7.5 hrs

with BA 5000-2:

PWR.LO: approx. 12 hrs 40 min.

PWR.HI: approx. 7 hrs 20 min.

PWR.LoI: approx. 7 hrs 20 min.

Dimensions ........................ length: 200 mm (without capsule),

Ø 35.5 mm

Weight ............................ approx. 300 g incl. BA 5000-2 (without capsule)

SKM 5200-II

Subject to change without notice.

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Sennheiser HMEC 250 - 06-07 User Manual Page 14

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