Signal Compensation using S2P files

One additional method for improving signal generator accuracy is an advanced compensation mode that affects amplitude and phase at the device under test. S2P file compensation is available on the SSG6082A-V and is a standard feature. S2P files are traditionally associated with vector network analyzers. Using a network analyzer, you can generate the S2P file. This file explains how a signals characteristics are changed by a RF network. Here, we can use it for cables, attenuators, amplifiers, and the like to improve the signal quality at our device.

First, we characterize our connection to the device. In this case, we have a cable and inline attenuator set. We connect this to the VNA for evaluation:

After calibration, we can connect and characterize the DUT. Then, we can save the data directly to a S2P file:

We save the S2P file and move it to the generator. Now, we can use the vector compensation tool to load and apply this compensation:

Vector Correction in the I/Q Control menu of the SSG6082A-V

S2P file config in the user S Parameter file menu of the SSG6082A-V

Now, we can view the before and after effects of this compensation on the signal that appears at our device under test:

This correction format is excellent for improving signal integrity at the dut and only requires the common S2P file format for the connecting network.