Technical data

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Chapter 4, Test, Parameter, and Pass/Fail Limit Descriptions

Pass/Fail Limit 28, TX Deviation If Set and Measure Mic Sens

If test Parameter 29, TX Mic Sens Set and Measure is set to “1”, this pass/fail limit

sets the deviation for testing a microphone’s sensitivity.

Pass/Fail limits are determined from an applicable radio specification or industry

standard, such as:

• Radio specification: Audio Sensitivity

• Industry standard: EIA/TIA-603, Section 2.2.10, Acoustic Microphone Sensitivity

For Example:

Suppose your industry standard specifies that for a modulation frequency of 1

kHz, the resulting frequency deviation should be 60% of the maximum

permissible frequency deviation. So, if your transmitter’s maximum deviation is 5

kHz, 60% would be 3 kHz. To set the radio’s limits within

±0.5 kHz of 3 kHz,

enter

2.5 in the lower-limit column and 3.5 in the upper-limit column. Limits are

entered in kHz.

It’s Used in the Following Tests:

TEST_07. TX Microphone Sensitivity

TEST_21. TX Quick Test