It sounds like you might be trying to measure the full frequency response of a system using a sweeping signal generator? If this is the case, then our current products won't be suitable.
The built in signal generator is only for indication, and there is no facility to synchronize the units with an external sweeping signal generator. You could do this manually yourself by recording a set of discreet measurements, however this can be laborious work.
Sorry I couldn't give you better news (if this is what you were trying to do).
Pico Software Engineer