Description:
1.High temp. test: After being placed in a chamber at +55℃ for 96 hours.
2.Low temp. test: After being placed in a chamber at –20℃ for 96 hours.
3.Humidity test: After being placed in a chamber at +40℃and 90±5% relative humidity for 96 hours.
4.Temp. cycle test: Low temperature -20 ℃ ±2℃ (2 hour ) / high temperature +55±2℃ (2 hour ) : 1 cycle , total 10 cycles.
Being placed for 6 hours at +25℃,receiver shall be measured. No obstacle to be harmful to normal operation ;damages, cracks, rusts and distortions, should not be audible at2.5Vsine wave between Fo~4.0KHz. S.P.L. deviation of unit should be within ±3dB.
use: LCD TVs, laptops, speakers, etc.
Block Diagram For Measurement Method.
Typical Frequence Response Curve : The swept sine-wave frequency response of a loudspeaker should ideally not deviate more
than indicated per Fig.2 At 0.1m 0.1W
