Allegro PCB PI
Hi, Can anyone suggest me, how to modify and add a VRM in Power integrity tool? I tried it but got the message as-"VRM cannot be placed outside the plane group boundaries".
View Articlenoise margin results are exceeding how to reduce it
hi all, I have a silly problem. I am using Allegro SI tool for DDR2 Signals. For noise margin i found the theoretical values Noise Margin (High)= VNH = VOH (Min) - VIH (Min) = 2.97-1.025= 1.945 V Noise...
View ArticleAllegro SigXplorer
Hi, Am new to working Allegro SigXp, earlier I was working in Hyperlynx. It will be useful to have discussion on the merits of SigXp. Can some one discuss on the process of SI with this tool, like...
View ArticlePositive artwork and negative artwork in pcb
Hi, how we know that" pcb board is positive or negative artwork".
View ArticleReg-impedance,constraint setting(90 ohms)
Hi Friends, what is impedance,how to calculate impedance?how to match 90 ohm impedance?how to set 90 ohm impedance in constraint setting...please explain me friends..... if any one give very practical...
View Articlelooking for study partner in Candence
:-DI am learning how to use cadence 16.3 to design schematics and pcb.Do you have interest in Cadence 16.3 like me?
View ArticleEqualizing tracks on the PCBs
Hi, I was trying to use the feature Relative propagation delay for matching lengths of some tracks designed on my PCB but I find that column actual and margin under relative delay turned as yellow. Why...
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