DIGIFI Opera s1d, User Manual, Page: 8 / 11

7. Product specifications
General characteristics
1
range About 25m indoor
2 Normal Operation time 8~9hours
3 Operating current 8~15mA
4 Standby current 0.25~0.35mA
5 Weight Receiver(earbud):20g, transmitter (adaptor):12g
6 antenna Earbud: dual diversity antenna
Adaptor: single chip antenna
7 Rechargeable battery time 2~3 hours
Audio characteristics
1
Audio frequency response 20Hz ~ 20kHz
2 Distortion <0.1%(20Hz~20KHz)
3 Signal to Noise Ratio Typical 86 dB
4 Ear speaker impedance 32 Ohm
5 Sampling frequency Max 44.1KHz
Radio characteristics
1
Frequency range 2400~2480MHz
2 Channel space 5MHz(16Channels)
3 Sensitivity Typical -86dBm(@ 18% per)
4 Transmission power Typical -5dBm
5 Data rate 2.37Mbps
6 Adjacent channel rejection 25dB
7 Alternate channel rejection 40dB
8 Regulatory compliance ETS300-200(EU)
FCC15.247(US)
ARIB STD-66
TELEC(JAPAN),EMI(KOREA)