> The software for these gizmos dates back to Windows for Workgroups 3.11. > That’s a way back. Even getting it running on Windows 95 was a bit of a > problem. The biggest issue is that it was hand optimized for some of the > timeout delays. > > If you bring it up, what you want is an old / slow PC with the oldest OS you > can > find a copy of.
Actually it'll work fine on everything up to and including Windows 8.1 x64, if you can get it to install. The big problem with future-proofing VB6 apps isn't the ability to run the programs themselves, but the fact that the standard application installer had dependencies on 16-bit Windows that are (finally) no longer supported by Microsoft. My PN3048 distribution comes with a batch file that, at least empirically, seems to do the job.... but still, it's smart to do a full system backup before messing with it. > > One of the things that can be done is determining the noise floor of the > system. > > To determine the noise floor I have used a noise generator with a > programmable step attenuator through a resistive combiner with the oscillator > under test output. > > > > Increase the attenuation until the noise source on-off level is > > undetectable. > > This is an easy way to measure the system noise floor. > > Noise sources are usually cheap on ebay because most people do not know > how to use them. I think you may be confusing the 3048A system with a noise figure meter. The 3048A system characterizes its own noise floor with built-in test sources and a user-supplied 90-degree splitter. -- john, KE5FX Miles Design LLC _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
