Content Comparison

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The behaviour of the four fields :START_FREQ_S (

Mathinline
body s

), :STEP_FREQ_S (

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body \delta

), :END_FREQ_S (

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body e

), :COUNT_S (

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body N

) is a little unexpected at first and merits a little some explanation.  First of all, the three frequency fields

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body s

,

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body \delta

,

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body e

are all limited by the 3248-bit resolution of the NCO and are therefore updated with the true underlying value immediately after being written.  Secondly, the end frequency is always updated when any of these fields are modified so that the following equation always holds:

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