EV6120 Datasheet, PDF (19/28 Pages) CML Microcircuits – For CMX612 Product Evaluation

Evaluation Kit for CMX612
1.6.2.7 (Stuttered) Dial Tone detect Algorithm Demonstration, - US cadence.
Refer to separate applications note for details of this algorithm.
EV6120
• This demonstration uses the EV6120’s own hook circuitry to put the line into an off-hook state. The
dial tone, stuttered or otherwise, is monitored straight across the line, via CMX612 AOP1. This
emulates the worst case scenario for dial tone detect when another extension goes off-hook and
the unit under test must monitor signals straight across the line.
• Algorithm constants may be altered by the user. New values are downloaded to the EV6120
whenever the ‘Start’ button is clicked.
• The length of each test is 2.1 seconds. In continuous mode there is an idle period of 1 second
between each test.
© 2000 Consumer Microcircuits Limited
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UM6120/1