test or certification item测试或认证名称: sae j 994 - alarm backup倒车蜂鸣器性能试验
test or certification info测试和认证相关内容:
lowtemperature test
‧testtemperature :-40±3°c
‧testduration :2 hrhightemperature test
‧testtemperature : 85±3°c
‧testduration :2 hrraintest
‧the rate ofrain deposit :2.5(+1.6/-0) mm/min
‧deliverangle from nozzle :45°
‧testduration :2 hr vibrationtest resonance search test
‧frequency /displacement :10 ~ 27 hz / 6.76mm
‧frequency /acceleration :27 ~ 500 hz / 10g
‧sweepduration :15mvibrationtest resonance dwell test
‧uency :resonance frequency
‧acceleration:10g
‧testdirection :x axis、y axis & z axis
‧testduration :30 min/axisvibrationtest vibration cycling test
vibrationtest vibration cycling test
‧frequency:27 ~ 500 hz
‧acceleration :10g
‧sweepduration :15 min
‧testduration :3 hr
‧testdirection :x、y、z axis
‧operatetime :last 15 mincorrosiontest
‧type ofsolution to be sprayed :nacl
‧saltsolution concentration :5±1%\
‧ph value ofsolution :ph 6.5 ~ 7.2
‧temperaturein chamber :35(+1.1/-1.7)°c
‧the rate ofsalt deposit :1~2 ml/hr/80cm2
‧testduration :50 hr (24hr exposure and 1hr dry, 2 cycles)highpressure hot water test
‧watertemperature :85 °c
‧waterpressure :above 6.9 mpa
‧water flow rate :above 18.9l/min
‧nozzle angle :15°
‧spray distance :below 300mm
‧test period :spray 10sec(min) ineach 30sec(max) dust test
‧type of dust :arizonadust
‧dust :4.5kg/m3
‧stirring time :2sec
‧suspending time :15min
‧testing duration :5hrendurance test at lowtemperature
‧test temperatur :-40°c±3°c
‧test duration :4 hr
‧operating time :30 sec on / 30sec ofendurance test at hightemperature
‧test temperature :85°c±3°c
‧test duration :4 hr
‧operating time :30 sec on & 30sec offendurance test at roomtemperature
‧tes temperature :25°c±11°c
‧test duration :100 hr
‧operating time :30 sec on & 30sec off
referproducts涉及产品: 汽车喇叭
leadtime周期: 常规服务regular service 25 工作日 working days （ urgent service, tobe confirm, 加急服务待定 ）
samplesize送样规格: 8pcs finishedproducts 八个成品
photo forreference 涉及图片:
UL认证，UL检测