I am using the Latest Allegro PCB designer 17.4 S003. I want to calculate the parasitics of trace and used the options available within Allegro and found that results displayed on the parasitic window and impedance workflow analysis window are different. Below are the results.
The query is how can there be two different values for a single trace?
When I use Display - a parasitic option the results of RLC is as below
TOP CONNECT LINE on network DATA4Impedance : 81.142000 ohmInductance : 25.880200 nHCapacitance : 3.930760 pF (to SHIELD LAYER)Prop Delay : 0.31895 nsResistance : 242.521000 mOhm
But when I perform Impedance analysis using workflow manager the results are as follows
| Net Name | Vias | No Ref | Max | Min | Typ | Max | Min | Typ | Length | Delay(ns) | R(mOhm) | L(nH) | C(pF) |
| DATA4 | 1 | 0 | 79.8 | 79.8 | 79.8 | 100 | 100 | 100 | 3869.53 | 0.564 | 426.089 | 45.035 | 7.066 |