Function Generator Shootout Three pro products compared

摘要

The models discussed are the PeakTech 4125, Siglent SDG1035X and the Rigol DG1032z. As a kind of benchmark we'll reference them against the Keysight 33522A, a professional model that the author has available (its correspondingly higher price ticket rules it out from taking part in our comparison). All of the generators operate on the direct digital synthesis (DDS) principle and operate at 125, 150 or 200 MS/s as appropriate, with 14-bit D-to-A converters and two channels. Only the reference device delivers 250 MS/s and a resolution of 16 bits. The upper frequency of the sine-wave signals produced is limited to between 25 to 30 MHz. From their similar data you might expect the performance of each device to be comparable but is that the case? You will have to read the article to find out!