Resistance and impedance: Difference between revisions

'''Electronic warfare resistance''' and '''remote assistance impedance''' are ship attributes that reduce the effectiveness of incoming [[electronic warfare]] and [[remote assistance]]. These attributes are most commonly found on capital ships, but most other ships do not have these attributes by default. However, ships without them can sometimes gain them through the use of certain modules.

On a basic level, the difference between resistance and impedance is that ''resistance'' makes {{co|yellow|hostile effects}} (like electronic warfare) less effective, while ''impedance'' makes {{co|yellow|friendly effects}} (such as remote repair) less effective.

As with many attributes or bonuses, it can sometimes be difficult to understand how their effects are calculated. In some cases (e.g. {{co|wheat|Remote Repair Impedance}} and {{co|wheat|Remote Logistics Impedance}}), differently-named attributes have identical effects.

'''Resistance''' is often presented as a negative bonus value, ranging from -0 down to -100%. The value represents how much of the effect is removed, so a {{co|crimson|-70% resistance bonus}} reduces the effectiveness of electronic warfare by 70%. This attribute can sometimes be presented as a positive bonus value (for example in the traits tab of a tactical destroyer). The bonus works the same though, despite it being a positive number, in that the {{co|lightgreen|+66.6% resistance bonus}} reduces electronic warfare effectiveness (in this case, weapon disruption and sensor dampening) by 66.6%.

'''ECM Resistance''' works differently from other electronic warfare resistances, in that they give a chance at avoiding the effect of enemy ECM jammers. This unique function is based on the fact that a ship can't be partially jammed. An {{icon|ecm|18}}'''ECM Resistance''' bonus of {{co|lightgreen|100%}} means they cannot be jammed.<ref>Attempting to jam a ship with 100% ECM Resistance gives the jamming ship a message informing them of this fact, which is useful to verify that the target is a state of immunity (such as Triage).</ref> ECM Resistance can best be understand as a flat "chance to fail" that is checked before anything else. A partial bonus of {{co|lightgreen|50%}} would first roll the 50% chance of simply failing (resisting), and if the check is successful, then the attempt to jam will simply fail. If the check fails to block the jam, the jamming attempt would then proceed to check whether the ECM strength of the hostile jammer is enough to overcome the sensor strength of the target.<ref>This is currently a theoretical scenario described in the [https://community.eveonline.com/news/dev-blogs/reworking-capital-ships-and-thus-it-begins/ Reworking Capital Ships: And thus it begins!&nbsp;] devblog, as there are currently no ECM Resistances bonuses less than 100% in the game - just 100% bonuses giving full immunity through '''Siege''', '''Triage''', '''Bastion''', and '''Industrial Core''' modules.</ref>

'''Impedance''' is also presented as either a positive (often in the case for ship's innate '''impedance''' values) or a negative bonus (commonly done for '''impedance bonuses''' from modules). If the value is a negative value, like a {{co|crimson|-60% impedance bonus}}, it means that any incoming remote assistance of that kind is reduced by 60%. If the value is a positive {{co|lightgreen|+80% impedance bonus}} it means that they will lose 80% of the positive effect of the remote assistance, in effect only gaining 20% of it.