The input signal is first split into two halves; the first is attenuated to a fraction <math>f</math> of its original amplitude <math>A</math> and the second is inverted and delayed by a time <math>t_d</math>, where both <math>f</math> and <math>t_d</math> are configurable depending on the application. When these two pulses are then added together, the zero crossing is always at a specific time, the time at which the CFD output pulse begins.
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days}}]]|}}{{#ifexist: Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-12 days}}|**[[:Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-12 days}}]]|}}{{#ifexist: Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-11 days}}|**[[:Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-11 days}}]]|}}{{#ifexist: Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-10 days}}|**[[:Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-10 days}}]]|}}{{#ifexist: Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-9 days}}|**[[:Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-9 days}}]]|}}{{#ifexist: Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-8 days}}|**[[:Category:Orphaned fairuse images as of {{#time:j F Y|- days}}|{{#time:j F Y|- days}}]]|-8 days}}]]|}}|#default=<span style="color:red;font-weight:bold;">Unknown parameter, must be one of ns, nt, nl, nr, refu or orfu</span>}}<noinclude>
{{/doc}}
As an example, assume that the input pulse is a linear ramp, <math>V=At</math>. This is split into two pulses, <math>V_1=fAt</math> and <math>V_2=-A(t-t_d)</math>. Solving for the zero crossing time <math>t</math> of the sum of these two pulses (<math>V_1+V_2</math>) gives
[[Category:Templates using ParserFunctions|{{PAGENAME}}]]</noinclude>
