驻极体电容式传声咪头9745咪头

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TEST??ID?DESCRIPTION?

30.1?发送灵敏度、频率响应:Sending?sensitivity?/?Frequency?Response.?30.2?发送响度评定值:Sending?loudness?srating(?SLR).?

30.3?

接受灵敏度、频率响应:Receiving??sensitivity?/Frequency?Response.?

30.4?接受响度评定值:Receiving?loudness?srating?(?RLR).?30.5.1?侧音掩蔽评定值:Sidetong?masking?rating?30.6.2?稳定度储备:Stability?margin?30.7.1?

发送失真:Sending?Distortion.

(3) High Temperature Test高温试验

To be no interference in operation after high temperature test 70±3℃ for 48 hours. The sensitivity to be within ±3dB from initial sensitivity, the mea-surement should be done  after 3 hours at the room temperature.

将没有操作干扰过的咪头在70±3℃高温下试验48小时，试验后在常温下放置3小时后测试，灵敏度变化在±3dB内。

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