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

Pass/Fail Limit 3, RX Audio Freq Resp Delta from 6 dB/Oct

This defines pass/fail limits for testing a receiver’s audio-frequency response,

with squelch set to minimum and volume set to 50% of rated audio-output power.

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

standard, such as:

• Radio specification: Audio Response

• Industry standard: EIA/TIA-603, Section 2.1.10, Audio Frequency Response.

For Example:

If your radio specification defines receiver audio response to be within +1 and

−3 dB of a 6 dB/octave de-emphasis curve and you want to test both limits on the

radio, enter

−3 in the lower-limit column and 1 in the upper-limit column. Limits

are entered in dB.

It’s Used in the Following Tests:

TEST_13. RX Audio Frequency Response

TEST_20. RX Quick Test