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Does anyone know details or availability of the 1E5 high stability timebase option for the HP 8648C 3.2 GHz signal generator? I have an 8648C without this option and would consider adding the option

Stuart, Sorry, forgot to tell you. I am also an design engineer working in an R&D company. On my job, I need to develop all level of electronics. I would like to have some decent equipment that I can

Amos, in all honesty I don't know why you want a spectrum analyzer. They do two things; measure frequency (to some accuracy up to and including frequency counter resolution) and measure RF power or

Stuart, I think before I can afford that attenuator, probably I may just calculate the loss and attenuation and buy appropriate attenuators when they are needed each time... Amos

Amos; You may learn a lot by working on this project, but the knowledge and results may not be what you expected. I've had to abandon similar projects when I replaced one suspect part only to find out

Most people sdon't use a real (GR or HP) to measure ESR. -John ================= Fred, after your message, I got to thinking about my previous measurements

Stuart, Good reasoning. This is my dilemma: 1. To get the system up and working by any condition, 2. Or spend more money to get the complete system. Unless I can run into someone sells cheap on ebay,

Amos, what you are dealing with is an attenuator specifically made for that one instrument. They are in short supply and are crucial for the analyzer to work properly and to display the actual input

Will, Yeah. I have thought about this option too. But that means I have to give up the ability to internally choose attenuation. Right now, I am facing the issue of choosing the cable that go between

You are right. I have seen caps that lost allmost all capacitance with perfect ESR, i have seen caps that leaked over 15 mA at 350V, blew out a lot of dielectrium but still perfect ESR. I have seen

If a capacitor is pulling a bus down, an ESR meter is really not the right tool. A short and a good cap both have a low ESR! -John ===============

What model ESR meter you use ? I guess a HP bridgde. With 6.5 digits this is not one of the ESR "indicator" kits. How low can you measure. I use an analog meter, it goes upto 40 ohm ( but I made it

Hi, If they are in fact vertical mounted AXIAL caps, then you could cut one lead, test the cap, then solder the lead back together. Chris

Amos - you can use an external atten. to keep the input signal below +20 dbm. Will

Some years ago, I had a Brother FAX with a PS that died. I was damned if I was gonna pay well over $100 for a replacement PS. Of course, there were no prints to be had. I got pissed and sucked off

2006. It's very straightforward.

Hi all, With help from friends in this group, I have found the schematics in the manual, and I also identified the five missing parts in the HP 8565A that I cheaply bought from ebay. Now, I found it

Hi Peter, I went through a similar problem (not exactly the same, but the error was the same) and was able to fix it by an internal source auto-calibration. Please, check my WEB at