During the Signal Generator Back-to-Basics Webcast, hosted by Agilent Technologies, on 29 February 2012, we received a number of real-time questions from a broad audience.
If one person asks - someone else will want to know the answer too - so we have captured various questions and answers and are posting them individually here, in this Forum, for your future reference and immediate enjoyment!
Question: Could you talk a little bit about the multi-tone feature available in your ESG's? Can we use that to do two-tone tests? What are the limitations?
Answer: An E4438C ESG signal generator equipped with an option 601 or 602 baseband generator can generate multiple tones – from 2 to 64, with selectable on/off state per tone. The tones must all fit within an 80 MHz bandwidth centered about the carrier frequency. This capability can provide a convenient space-saving and cost-effective alternative to combining the outputs of multiple analog signal generators. These same multi-tone capabilities are also available in the N5182A MXG and E8267D PSG vector signal generators.
If more tones are needed, you can use any of these signal generators in conjunction with the N7621B Signal Studio for Multi-tone Distortion software (see: http://www.home.agilent.com/agilent/product.jspx?cc=US&lc=eng&pageMode=OV&pid=1160743&ct=PRODUCT&id=1160743). This setup enables you to generate up to 4097 tones within the 80 MHz bandwidth and provides a pre-distortion algorithm to correct the signals, greatly improving the distortion-free dynamic range.