Intra-pair skew is the result of different propagation delays on two signal paths. The SPARQ network analyzer can measure intra-pair skew between the two paths by performing a delta time at level measurement on the acquired step responses.
Step 1. Configure Ports
Setup the SPARQ network analyzer for a four-port, single-ended measurement. This example configures the ports from 1 to 2 and 3 to 4. This is the port configuration we typically recommend, but you may assign ports as appropriate for your application.
Step 2. Generate Step Responses
Configure the Result Display to show a step response for S21, S43, S12, and S34.
Initiate the SPARQ network analyzer to perform S-Parameter measurements. The result will display the four step responses.
Step 3. Setup Delta Time at Level Measurement
Select Measure > Measure Setup… from the drop-down menu at the top of the window.
Setup parameters P1 and P2 to be a dtime@level parameter using the step responses as the sources.
In this example, the measurements correlate as follows:
P1 – delta time between the step response of S21 and S43
P2 – delta time between the step response of S12 and S34