Altium NEXUS Documentation


Created: August 2, 2022 | Updated: August 2, 2022
This documentation page references Altium NEXUS/NEXUS Client (part of the deployed NEXUS solution), which has been discontinued. All your PCB design, data management and collaboration needs can now be delivered by Altium Designer (with Altium Designer Enterprise Subscription) and a connected Altium 365 Workspace. Check out the FAQs page for more information.

Parent page: PCB Query Functions - Membership Checks


Returns all differential pair objects that are members of the specified Differential Pair Class.


InDifferentialPairClass(ClassName : String) : Boolean/Boolean_String

As you define the Query expression, a pop-up list of all existing differential pairs, by name, is presented.

Example Usage

InDifferentialPairClass('TopSide') = True
InDifferentialPairClass('TopSide') = 'True'

Returns all differential pair objects that are members of the TopSide Differential Pair Class.

Not InDifferentialPairClass('BottomSide')
InDifferentialPairClass('BottomSide') = False
InDifferentialPairClass('BottomSide') = 'False'

Returns all objects except differential pair objects that are members of the BottomSide Differential Pair Class.


  1. The single quote characters (') at the start and end of the ClassName string are mandatory.
Found an issue with this document? Highlight the area, then use Ctrl+Enter to report it.

Contact Us

Contact our corporate or local offices directly.

We're sorry to hear the article wasn't helpful to you.
Could you take a moment to tell us why?
200 characters remaining
You are reporting an issue with the following selected text
and/or image within the active document: