Thanks to a lot of help and feedback from Ron, K8AQC and Grant, G8UBN, my GPIB Toolkit package now supports the HP 3585A/B spectrum analyzers. Quite a few people have asked about these models, so it'll be good to get this release out there at last. All of the principal GPIB Toolkit apps have been tested with the 3585A: 7470.exe: Screen capture (via HP-GL/2 synthesis) SSM.exe: Spectrum recording/playback PN.exe: Phase-noise measurement See http://www.ke5fx.com/gpib.htm -- questions/bug reports are always welcome. As an aside, if I'm not mistaken, all of the common Tektronix and HP/Agilent spectrum analyzers are now supported by SSM, PN, or both. The 3585 was the last analyzer model that could run SSM and PN but didn't yet. As such, this will probably be the last major release for some time. Thanks again to everyone who has helped test various analyzer models with these applications, and/or contributed code to them! -- john, KE5FX