Technical data

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

Pass/Fail Limit 8, RX CT/CDCSS FM Hum and Noise

This sets the pass/fail limits for receiver hum-and-noise testing with CT/CDCSS

present and the receiver un-squelched.

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

standard, such as:

• Radio specification: Hum and Noise

• Industry standard: EIA/TIA-603, Section 2.1.11, Hum and Noise Ratio

For Example:

If your radio standard defines hum and noise, un-squelched, as 30 dB minimum

and you want to test the radio’s lower limits only, you would enter

30 in the

lower-limit column and

0 in the upper-limit column. Limits are entered in dB.

It’s Used in the Following Test:

TEST_11. RX Hum and Noise