I want to measure jitter on the I2S output from my ADC. I have the SYS-2722 and the PSIA-2722 serial interface. How can I set up this measurement?
We are not able to measure jitter on the PSIA (receiver) or parallel input (on the rear of the instrument). What you should do is connect the bit clock (BCK) from your DUT (Device Under Test) to the unbalanced (BNC) digital input #1 of the analyzer. You can then use the Digital Interface Analyzer (intervu) program as shown in the accompanying test file example “jitter PSIA BCK to AES BNC.at27.” This test file will measure jitter on the square wave on the bit clock or frame clock (but not the master clock or data lines) from your DUT.
Please note that the unbalanced digital input (BNC) has a maximum input level of 5 Vp.
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slx 4056
es
This file accompanies the knowledge base article "I2S jitter measurement with the SYS-2722." It demonstrates how to measure digital interface jitter using the digital unbalanced input of the instrument.
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