IPC-2581 SPECs in PCB Editor: RAK
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LAB 2: Creating an object SPEC
IPC-2581 SPECs can be attached to various objects in the design drawing to identify
the critical aspects of an object. Manufacturers prefer to know the specific traces in a
design under impedance control.
In this example, a SPEC will be created for a 50-ohm impedance (+/- 3% Tolerance) tag
to be assigned later to clines in the board drawing. This tag will be exported in IPC-2581
to indicate to the manufacture the specific traces on each layer, which require the
controlled impedance.
1. From the PCB Editor menu, go to Setup > IPC Spec Definitions.
2. Add a SPEC definition using the name as IMPED_75.
3. For the new IMPED_75 SPEC:
a. Set Data Elements to Clines.
b. Spec Type: Impedance
c. Sub Type: IMPEDANCE
d. Select Add.
