The BER/BLER Add-On for GTT NB IoT Toolkit is a software add-on for LabVIEW that serves as an extension of the GTT NB IoT Standalone Toolkit. The add-on features demodulation of LTE signals to enable verification of remote base station (RBS) Internet of Things (IoT) transmitter system performance using analysis of throughput in the form of bit error rate (BER) and block error rate (BLER). The BER/BLER Add-On for GTT NB IoT Toolkit includes high-level APIs that you can use to create custom sequences and fully customize soft front panels.