ITEMS

TEST CONDITIONS

REQUIREMENTS

Humidity storage.

Temperature  : +40℃ ±2℃
Humidity         : 90 ~ 95%RH
Time               : 240hrs.

Change of oscillating
frequency.
 : ±15 % max.

Change of sound
pressure  : ±10dB max.

Change of current
consumption : ±15%max.

Low temp. storage.

Temperature  : -20℃ ±2℃
Time               : 240 hr.

Hight temp. storage

Temperature  :  70℃  ±3℃
Time               : 240 hr

Thermal shock

Temperature  and keeping time.
1cycle : -20℃ ±2℃, 1 hr
            +79℃ ±2℃, 1 hr
Test cycle time  :  5 cycles.