In a message dated 4/8/2007 14:21:05 Pacific Daylight Time, [EMAIL PROTECTED] writes: >Said,
>One way to settle this is for you to collect a data set >of back-to-back single-shot time interval samples over >GPIB and have a look at the data. Even a hundred >samples is enough; it will take a fraction of a second; >probably limited by GPIB speed. Hi Tom, well - that's my main reason I did the post - I wish I had Visi for Windows2K so I could do exactly that! I am trying to set up a Win98 machine with GPIB since I bought a quite old version of Visi from Wavecrest that runs only on Win98. >Doing this with a 5328, 5334, 5370, 5371, 53132, or > 620, etc. clearly shows what the native resolution of > these machines is. See Magnus' email, down to 200 femtoseconds on the newer units. >Do not use an averaging mode. All of the above TIC >allow averaging, and yes, with averaging you get a >significant gain in apparent resolution. But we're talking >here about the single-shot resolution of the hardware. Will let you know once I get GPIB up and running. >Related to that, about how many single-shot samples >per second can you get out of a Wavecrest? According to their user manuals, 15,000 per second on a 2070 via GPIB, and up to 40,000 per second with the HiPer option (I don't know what that means) on a DTS2075. The SIA3000 and later models can probably do more, but I don't think they have two input A to B time interval measurements (I may stand corrected). Bye, Said ************************************** See what's free at http://www.aol.com. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
