Sennheiser Wireless Digital Instructions for Use - Page 16

Technical data - receiver

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10 Technical data Overall system Transmission format Frequency response Audio dynamic range Distortion RF carrier frequency Number of selectable frequencies Channel 1 Channel 2 Channel 3 Channel 4 RF output power Signal-to-noise ratio Transmission range FCC Approval Sennheiser proprietary digital audio transmission 20 Hz to 15 kHz > 120 dB < 0.2 % THD 905 MHz to 925 MHz 4 905 MHz 915 MHz 920 MHz 925 MHz 0.5 mW > 110 dB(A) 280 feet line of sight 80 to 130 feet adverse conditions Part 15 approved, no user licence required SK 1093 DIGITAL & SKM 1091 DIGITAL Transmitter A/D conversion Input impedance LINE Input impedance MIC Connectors (SK 1093 DIGITAL) Controls Dimensions SK 1093 DIGITAL Dimensions SKM 1091 DIGITAL 18-bit linear, 128 fold oversampling 1 MOhm 930 Ohm to 6,000 Ohm Lockable 1/8", unbalanced Mute, Power on/off, Channel Select, Sensitivity adjustment 105 x 63 x 26 mm 245 x 38 mm EM 1090 DIGITAL Receiver D/A conversion Output Connectors Indicators Controls Dimensions Power supply 16-bit linear Balanced +18 dBU (-2 dB), 150 Ohm Unbalanced +12 dBU (-2 dB), 1.6 kOhm Transformerless XLR, balanced 1/4" jack, unbalanced Power on/off, Transmitter Battery Life, Data Received, RF Power on/off, Channel Select, AF Level 213 x 145 x 44 mm - (1/2 RU) 12 V DC 16

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16
10
Technical data
Overall system
Transmission format
Sennheiser proprietary digital
audio transmission
Frequency response
20 Hz to 15 kHz
Audio dynamic range
> 120 dB
Distortion
< 0.2 % THD
RF carrier frequency
905 MHz to 925 MHz
Number of selectable frequencies
4
Channel 1
905 MHz
Channel 2
915 MHz
Channel 3
920 MHz
Channel 4
925 MHz
RF output power
0.5 mW
Signal-to-noise ratio
> 110 dB(A)
Transmission range
280 feet line of sight
80 to 130 feet adverse conditions
FCC Approval
Part 15 approved, no user licence
required
SK 1093 DIGITAL & SKM 1091 DIGITAL Transmitter
A/D conversion
18-bit linear, 128 fold oversampling
Input impedance LINE
1 MOhm
Input impedance MIC
930 Ohm to 6,000 Ohm
Connectors (SK 1093 DIGITAL)
Lockable 1/8”, unbalanced
Controls
Mute, Power on/off, Channel Select,
Sensitivity adjustment
Dimensions SK 1093 DIGITAL
105 x 63 x 26 mm
Dimensions SKM 1091 DIGITAL
245 x 38 mm
EM 1090 DIGITAL Receiver
D/A conversion
16-bit linear
Output
Balanced +18 dBU (-2 dB), 150 Ohm
Unbalanced +12 dBU (-2 dB), 1.6 kOhm
Connectors
Transformerless XLR, balanced
1/4” jack, unbalanced
Indicators
Power on/off,
Transmitter Battery Life,
Data Received, RF
Controls
Power on/off, Channel Select,
AF Level
Dimensions
213 x 145 x 44 mm – (1/2 RU)
Power supply
12 V DC