Mixer measurements using Waveforms with ADP3450

[Andreas Schröck]

I would need to measure a mixer using the Network functionality.

Currently, it is not possible to set a frequency offset between the wavegen and the measurement.

Any suggestions where I can start to search for additional information?

[attila]

Hi @Andreas Schröck

This is currently not possible. Do you need a fixed offset between the two frequencies?

[Andreas Schröck]

yes, I would need to have a fixed offset.

Example:

An input frequency of ~14MHz would be mixed to 900kHz.

I would like to sweep the input frequency within a span of ~5MHz and measure the amplitude of the resulting frequency.

Is it possible to use a script for this purpose?

[attila]

In Network Analyzer you can set Source: External and control the sweep from Wavegen or external equipment.
The NA will look for peak in the spectrum and consider this the signal frequency. Under Options menu you can adjust the External Threshold, the minimum peak magnitude.
Depending or number of Steps, set the sweep time to seconds or minutes, for wide logarithmic scales you can adjust the sweep frequencies manually. When all the step points are captured it will draw a line, until this only dots.