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Delay Tune for beginner

binpersonal
Dear all, when I use manual delay tune in Allergo 16.3, why there are two numbers on the right hand side corner as the following figure?

Which number should I use?   And what are the meaning of  "total manhattan length" ?  Where I can find tutorials for dealy tune for 16.3?

  Net Name:            CH6
  Pin count:              4
  Via count:              3
  Total etch length:      13388.442 MIL
  Total manhattan length: 6524.945 MIL
  Percent manhattan:      205.19%

  No connections remaining

  Properties attached to net
    LOGICAL_PATH      = @mux_debug_brd.schematic1(sch_1):ch6
    NO_ROUTE
    ELECTRICAL_CONSTRAINT_SET  = CH0_U5

Electrical Constraints assigned to net
prop delay: from AD to AR  min=13400.000 MIL  max=13405.000 MIL

Thank You very much!
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  • binpersonal

    Thanks,

     It displays " Dly -3161.751     +67.442"  when I use the "delay tune".

    Why the first value is negative? 

Reply
  • binpersonal

    Thanks,

     It displays " Dly -3161.751     +67.442"  when I use the "delay tune".

    Why the first value is negative? 

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