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

TEST_17. RX CTCSS/CDCSS Opening

This test measures the level of the RF signal (with the squelch tone) required to

open the squelch circuit of the radio with an applied CTCSS (Continuous Tone-

Controlled Squelch System) tone or CDCSS (Continuous Digital-Controlled

Squelch System) code word. The SINAD at the measured opening level is also

measured.

Audio connections from the radio to the test set are required for this test.

Pass/Fail Limits Used

Pass/Fail Limit 7, RX CDCSS SINAD at Opening

Pass/Fail Limit 9, RX CT/CDCSS Opening Level

Pass/Fail Limit 10, RX CTCSS SINAD at Opening

Test Parameters Used

Parameter 1, RT External Pad and Cable Loss

Parameter 8, RX CT/CDCSS Available

Parameter 11, RX Maximum Audio Power

Parameter 16, RX Standard RF Input Level

Parameter 17, RX Tolerance for Setting Volume