This contribution introduces a novel test system developed to evaluate the signal transmission quality in high-speed data links for the 2026 Inner Tracker (ITk) upgrade of the ATLAS experiment. Using an FPGA-based data acquisition (DAQ) framework, the setup can run simultaneous Bit Error Rate (BER) tests for up to 64 channels and generate virtual eye diagrams, for qualifying the ∼26k electrical links at the ATLAS ITk data rate of 1.28Gb/s. The paper includes results from system calibration, yielding its contribution to the measured losses, and preliminary results from tests of prototype and pre-production assemblies of on-detector links of the three ATLAS ITk Pixel subsystems.
@article{arxiv.2503.09303,
title = {Development of a Test System for Data Links of the ATLAS Inner Tracker (ITk) Upgrade Silicon Pixel Detector},
author = {F. Ustuner and A. C. Mullins and S. Eisenhardt and M. Kocian and D. Su and M. Wittgen and A. Young},
journal= {arXiv preprint arXiv:2503.09303},
year = {2025}
}