BeStar BLS87-12-45H30 LF - Manual (Page 5)

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Date:
Page:05 of 07
Drawn Rev. Date Note
A
博 士 達
After the test,all electronic and acoustic characteristic should be satisfied
with the specification. SPL: Deviation is of
±2dB of initial value.
4. Reliability Test
汪凤声
张秀琴
王 平
汪凤声
DRG NO:BS/TES01.1102A
Speaker
4.1 Load test
Input Power 12W
Duration use white noise
96hours
4.2 Heat test
Temperature +55
±3°C
Relative humidity 20...50%RH
Duration 96hrs
4.3 Cold test
Temperature -25
±3°C
Duration 96hrs
4.4 Temperature change( shock )
Low Temperature -20
± 3°C
High Temperature +45
± 3°C
Dwell time each temperature 30min
Transfer time from lower to upper temperature <10s
Cycles 100
4.5 Moisture Test
Tempeature +45
± 2°C
Humidity 96
± 2%(RH)
Duration 96hrs
4.6 Drop test
Surface(floor) concrete or steel
Height 75cm
Direction X,Y&Z 3axes
2011/09/17
2011/09/17
BLS87-12-45H30 LF
BLS87-12-45H30 LF