3. Reliability Test 可靠性測試

(All tests should be done after 2 hours of conditioning at 20℃, R.H65%, while the sensitivity is to be within ±3dB from the initial sensitivity after the following experiments.)

3.1 HIGH TEMPERATURE TEST

                High temperature:        +75℃

              Duration:            72 hours

3.2 LOW TEMPERATURE TEST

                Low temperature:        -30℃

            Duration:            72 hours

3.3 TEMPERATURE CYCLE TEST

               Low temperature:         -30℃

             High temperature:         +75℃         

             Changeover time:     5 hours

             Duration:             6 hours

            Cycle:                    6

3.4 STATICAL HUMIDITY TEST

               Temperature:            +60℃

            Relative humidity:     90%RH

             Duration:             96 hours

3.5 VIBRATION TEST

               Amplitude:                1.22mm

             Duration:             1 minutes/plane

             Freq.range:          10～55Hz

           Total time:            2 hour

3.6 DROP TEST

               Drop a unit unpacked onto a board of 40mm thick

            Height:                  1 m

             Cycle:                   10 (1 each plane)

3.7 ESD TEST.

            The microphone under test must be discharged between each ESD exposure without ground.

             (contact:±8Kv, air:±15Kv)There is no interference in operation after 10 times exposure

All these tests above should be measured after leaving normal temperature for 1hrs.

Sensitivity difference at 1kHz shall be within ±3dB from initial value after test.

以上試驗完畢後必須於常溫狀態下放置1小時再進行檢測。

測試音壓級變化要求1kHz時必須在±3dB以內。

4. Electrical And Acoustical Measuring Condition

5. Frequency Response

DAAS-IEC318   1mW/179mV

6. Frequency Response

7.Packing

1、EPE Pan:    190*190 mm    100  pcs

         ●　One EPE  pan contains  100PCS products

2、Paper Board:  180*180 mm   100 pcs

         ●　1pcs paper board on bottom fo each EPE pan

         ●　1pcs paper board on top of inner carton  

3、Box :  450*280 *460mm        1 pcs

     ●　Total:  10000 PCS / 1 outer carton

4、Single Weight:    1.2g/set

5、Net Weight :      12 KG

6、Gross Weight :    14.655 KG