System specification - Evolution Wireless Digital

SYSTEM SPECIFICATION (V1.2)
Evolution Wireless Digital
11/12
ARCHITECT‘S SPECIFICATION
EW-D EM rack receiver
The stationary receiver with switching diversity technology
shall be for use with a companion transmitter as part of a
digital wireless RF transmission system.
The receiver shall operate within ten UHF frequency
ranges, with a switching bandwidth of up to 56 MHz:
470.2 – 526 MHz, 520 – 576 MHz, 552 – 607.8 MHz, 606.2
– 662 MHz, 630 – 662 MHz, 662 – 693.8 MHz, 823.2 –
831.8 MHz, 863.2 – 846.8 MHz, 925.2 – 937.3 MHz, 1785.2 –
1799.8 MHz; selectable frequencies shall be up to 2,240.
The receiver shall feature Bluetooth
® Low Energy (BLE) at
a frequency range between 2402 and 2480 MHz for remote
controlling the devices via a control App for iOS and And-
roid.
The audio frequency response shall be between 20 Hz and
20 kHz (-3 dB) @ 3 dBfs. Audio total harmonic distortion
(THD) shall be ≤ -60 dB for 1 kHz @ -3 dBfs input level.
Dynamic range shall be 134 dB.
The receiver shall be menu-driven with a backlit LC display
showing the current frequency, channel number, mete-
ring of RF level, metering of AF level, lock status, muting
function, mute lock status, antenna switching diversity,
app connection, gain, audio output level, menu and battery
status of the associated transmitter. An auto-lock feature
shall be provided to prevent settings from being acciden-
tally altered.
The receiver shall feature a balanced XLR-3M audio output
with a maximum output of +18 dBu along with an unbalan-
ced ¼“ (6.3 mm) audio output with a maximum output of
+12 dBu. Two BNC-type input sockets shall be provided for
connecting the antennas.
The receiver shall operate on 12 V power supplied from
the power supply unit or from a Sennheiser EW-D ASA an-
tenna splitter. Power consumption shall be ≤ 300 mA. The
receiver shall have a rugged metal housing; dimensions
shall be approximately 212 x 44 x 189 mm (8.35“ x 1.73“ x
7.44“). Weight shall be approximately 1000 grams (2.2 lbs)
without antennas and power supply. Operating tempera-
ture shall range from −10 °C to +55 °C (+14 °F to +131 °F).
The receiver shall be the Sennheiser EW-D EM.
EW-D SKM-S handheld transmitter
The handheld transmitter shall be for use with a compa-
nion receiver as part of a digital wireless RF transmission
system.
The handheld transmitter shall operate within ten
UHF frequency ranges, with a switching bandwidth of
up to 56 MHz: 470.2 – 526 MHz, 520 – 576 MHz, 552
– 607.8 MHz, 606.2 – 662 MHz, 630 – 662 MHz, 662 –
693.8 MHz, 823.2 – 831.8 MHz, 863.2 – 846.8 MHz, 925.2
– 937.3 MHz, 1785.2 – 1799.8 MHz; selectable frequencies
shall be up to 2,240.
The audio frequency response shall be between 20 Hz and
20 kHz (-3 dB) @ 3 dBfs. Audio total harmonic distortion
(THD) shall be ≤ -60 dB for 1 kHz @ -3 dBfs input level.
Dynamic range shall be 134 dB.
A programmable mute switch shall be provided to mute or
unmute the audio signal.
The handheld transmitter’s parameters shall be configu-
rable in the associated receiver’s menu and synchronized
with the handheld transmitter via Bluetooth Low Energy
(BLE).
Power shall be supplied to the handheld transmitter by two
1.5 V AA size batteries or by one Sennheiser BA 70 rechar-
geable battery pack. Operating time shall be typically
12 hours with a battery pack and up to 8 hours with AA
batteries.
Occupied bandwidth shall be 200 kHz. Transmit power
(radiated) shall be 10 mW ERP (1785.2 – 1799.8 MHz Range:
12 mW ERP).
The handheld transmitter shall have a rugged metal
housing; dimensions shall be approximately 50 mm (1.97“)
in diameter and 268 mm (10.55“) in length including a
Sennheiser MMD 835 microphone module. Weight inclu-
ding MMD 835 microphone module shall be approximately
304 grams (0.67 lbs). Operating temperature shall range
from −10 °C to +55 °C (+14 °F to +131 °F).
A range of different microphone heads shall be available
for the handheld transmitter.
The handheld transmitter shall be the Sennheiser EW-D
SKM-S.