No, UD Box is not tied to any brand/instruments. It is compatible with almost all types of signal generators and analyzers available on the market. We have tested UD Box with instruments from Keysight, Rohde & Schwarz, Anritsu, NI, Litepoint, etc, and we are still working on the integration with more instruments. Please do not hesitate to contact us to confirm if UD Box is compatible with your current application scenario and existing instruments.