华中区喇叭厂家 26mm扬声器 血糖仪专用语音小喇叭

2.1

Main dimensions（Unit: mm）

Φ26mm*4.6mm  Shown Fig.3

2.2

Transducing function

DYNAMIC SPEAKER

2.3

Unit weight

About 3±10%（g）

2.4

Impedance

8Ω±15%  at 2.0kHz 1.0Vms Sine Wave .

3.1

Resonance frequency

 600±20%Hz

1.0V Sine wave

3.2

Frequency range

Fo ~20KHz  

S.P.L-10dB

3.3

S.P.L.  ( 0dB=20 ubar )

91dB ±3dB

at 1.0w/0.1m

1.0K，1.2k,1.5KHz,2.0KHz  on average

3.4

Rated power

0.5W

At  2V

3.5

MAX. Power

0.8W

At  2.52V

3.6

Distortion

10% max.

at 2.0KHz(0.1W/0.1m)

3.7

Operation test

No one should perceive noise of sine wave 2V of     FO ~ 20kHz .

3.8

Polarity

When a positive DC current is applied to the terminal marked(+), diaphragm shall move forward

6.1

Operating temperature range

-25℃ ~ +60℃

6.2

Storage temperature range

-30℃ ~ +65℃

6.3

High temperature durability

After having been in a test chamber for 96 hours at the  condition of +65℃ ±2℃ and then let 2 hours in a room .

6.4

Low temperature durability

After having been in a test chamber for 96 hours at  the condition  of -30℃ ±2℃ and then let 2 hours in a room .

6.5

Humidity durability

After having been in a test chamber for 96 hours at the condition  of  +40℃±2℃ 90%~96% RH  and then  let 2 hours in a room .

6.6

Temperature cycle durability

Low temperature  -30 ℃ ±2℃ (2小时) /  high temperature        +65±2℃(2小时 ) : 1 cycle , total 6 cycles and then let 2 hours in a room .

6.7

Drop test

Height:                       1.5 m

 Cycle:                       6 (1 each plain)

onto the concrete board

6.8

Load test

Noise：White noise

Duration：96 hours

Input power：Rated power（2V）