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How can the under / over frequency be calculated on 9315 30-500 Units?

UNDER / OVER FREQUENCY SETUP

 

Eg. 9252 = +/-3.6 HZ

Where: Under = -3.6 HZ, Over = +3.6 HZ

Compensate for 10ths: Under = 36, Over = 36

Convert to Hex: Under = 24, Over = 24

Combine Hex Bits Must have 4 digits; 2424

Convert back to decimal. Answer 9252