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what is the function of these layers:(1)"package keepin" "route keepin" , how about the difference about them?(2)assembly_top;(3)board geometry;(4)cut_masksanother question is the word of "slot", what is the meaning of "slot"?thanks!
Hello,(1) Package Keepin:Package keepin subclass can be used to define a constraint area within which the components are to be placed ( generally this command is used with autoplace command ) If the components are placed manually outside the keepin area , design rule check report generated shows the DRC error for voilation of constraint.(2) Route Keepin:Route keepin subclass can be used to define a constraint area within which the tracks are to be routed ( generally this command is used with autoroute command ) If the tracks are routed manually outside the keepin area , design rule check report generated shows the DRC error for voilation of constraint.(3) Assembly Top: This subclass is used to define component details for assembly , assembly instructions ( that are useful at the the time of board assembly ) etc...(4) Board Geometry:Generally used to define outline for board ( that defines actual size of the board ).(5) Cutmarks: can be used instead of bord outline ( for manufacturing convinience ).Regards,PrajaktaSolar Biotronic Laboratories Pvt.Ltd.www.sblindia.com.
Assembly-top (bottom): also used by tesprep process to know where component's body is locatedShould be as close as possible from reality for this reason (external dimensions)Hope this help,jean-charles