1.Technical Parameter  Measuring condition   

1.Part shall be measured under a condition (Temperature: 5～35℃, Humidity: 45%～85%R.H., Atmospheric pressure: 860 ～1060hPa) unless the standard condition (Temperature: 25±3℃, Humidity: 60±10%R.H. Atmospheric pressure: 860 ～1060hPa) is regulated to measure.

2.Dimensions       Unit：mm case(Aluminium)

Recommended Setting 

FC:     Frequency  Counter                 Tw：   Tweeter BFO:      Beat Freq.  Osc.                    RL:    Resistor  Load 3.9kΩ TUT:    Transducer  Under  Test             MIC:   Microphone MA:     Measuring  Amplifier                AEC:   Anechoic  Chamber

Directional testing   

Beam Angle:Tested at 25.0Khz frequency   

　　2.Reliability Test

　　After any following tests the part shall meet specifications without any degradation in appearance and performance except SPL. SPL shall not deviate more than -5 dB from the initial value.

　　a）impact test

　　At an acceleration of 980m/s²(100G), impact three times on each side.

　　b）Drop Test

　　Standard Packaging From 100±1cm(Drop on hard wood or board of 5cm thick, 10times.

　　c）Vibration

　　The product can withstand frequencies ranging from 10 to 55Hz, amplitude of 1.5mm, and scanning speed rate: loct/min vibration test, X, Y, Z three directions, 3 hours in  each direction.

　　d）high temperature storage

　　The product is stored at +80 ± 3 ℃ for 1000 hours, and then stored in a strip at room temperature. Place under the piece for 24 hours.

　　e）low temperature storage

　　The product is stored at -40 ± 3 ℃ for 1000 hours, and then stored in a strip at room temperature. Place under the piece for 24 hours.

　　f) High temperature and high humidity storage

　　The product operates at a temperature of+80 ± 3 ℃ and a humidity of 85% R.H  Storage for 1000h, then place at room temperature for 24 hours.

　　g)Thermal Shock

　　The probe is connected in parallel with a 3.9K Ω resistor at both ends, and is kept at -40 ℃± 3 ℃ for 0.5 hours. It is then heated to+85 ℃± 3 ℃ within 5 minutes and kept for 0.5 hours. After 1000 cycles, it is left at room temperature for 24 hours.

　　h)High temperature lifespan

　　The product operates at+85 ± 3 ℃ for 118 hours, and then remains at room  temperature for 24 hours

　　i)Low temperature lifespan

　　The product is operated at -40 ± 3 ℃ for 118 hours, and then left at room temperature for 24 hours.

　　j)High temperature and high humidity operation

　　The product operates at a temperature of 85 ± 3 ℃ and a humidity of 85% R H. Work for 375 hoursz, and then leave it at room temperature for 24 hours.

　　k)High and low temperature characteristics

　　The product remains stable for 30 minutes in the ambient temperature range of -40 ± 3 ℃, stable for 30 minutes in the temperature range of 25 ± 3 ℃, and stable for 30 minutes in the temperature range of+85 ± 3 ℃