Hello,
We do not have a customer available Performance procedure for the CT1, just the information in the user manual (specifications, Introduction, operation).
For repair or calibration contact, information is below. To set up a repair RMA repair call 1-800-833-9200 opt 2. Or send an email to rmarequest@tektronix.com
or Web: https://www.tek.com/en/service-quote
