Sennheiser WIRELESS DIGITAL - 10 Technical data; Overall system; SK 1093 DIGITAL & SKM 1091 DIGITAL Transmitter; EM 1090 DIGITAL Receiver

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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