| Item |
Test Conditions |
Evaluation Standard |
|
| 1 |
High Temp. Test |
After exposure at 70℃ for 100 hours, and expose to room temperature
for 6 hours, sensitivity to be within ±3dB from initial sensitivity. |
After any tests , the sensitivity to be within ±3dB of initial
sensitivity after 3 hours of conditioning at 20℃ and shall keep
their initial operation and appearance. |
| 2 |
Low Temp. Test |
After exposure at -25℃ for 100 hours, and expose to room temperature
for 6 hours, sensitivity to be within ±3dB from initial sensitivity. |
|
| 3 |
Temp.Cycle Test |
After exposure at 70℃ for 1 hour, at room temp. for 1 hour,
at -25℃ for 1 hour, at room temp. for 1 hour, at 10 cycles,
and expose to room temp. for 6 hours, sensitivity to be within
±3dB from initial sensitivity. |
|
| 4 |
Humidity Test |
After exposure at 40℃ and 90±5% relative humidity for 240
hours, and expose to room temperature for 6 hours, sensitivity
to be within ±3dB from initial sensitivity. |
|
| 5 |
Vibration Test |
The microphone unit must be subjected to each 30 minutes vibrations
at three axises 3 mm dynamic rang. 1000cycles/minute. |
|
| 6 |
Drop test |
The microphone unit without packaged must be subjected to
each 3 drops at three axises from the height of 1 meter to 20mm
thick hardwood. |
|
| 7 |
Pull Strength Test |
The microphone assembly shall suffer no change from a pull
strength of 0.5 kg for 3 seconds applied between the connector
and the microphone. |
Application of the "pin" type |
