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My chinese Kelvin test leads finally arrived, and they look & feel very good and solid. As usual my 3468A almost reads zero altough still a bit negative when I short them out. But I am pretty sure

I have put together a zipped file from the current Full625 upgrade I have applied the well known patch to the zipped 625 file to make the GPS freq/time feature work. It goes on a PCMCIA or CF card

I have a couple of HP 8443A tracking generators. I purchased a smoked unit for spares - the transformer had gone into meltdown. When the display (nixie tube) on one of my tracking generators quit, I

And if you’re talking about HP equipment, we’ve found the engineers at HP did a great job of designing circuits that happily protect the fuse. Regards, Stephen Hanselman Datagate Systems, LLC 3107

That's another sign that someone was messing with the analyzer. Keep that in mind as you proceed, it may give you clues if you run into other oddities. The manual will tell you how to register the

Hi Vladan, I didn't get a chance for more tests today, but did put together a basic cal kit and ordered a replacement battery. The BR-2/3a that's installed still reads 3.068V, so is probably still

Would a properly sized fuse prevent a fire from happening if you fired up a hotplate, and placed it in contact with a curtain? This is a common misconception about fuses and fire protection. They are

So don’t rush out replacing all your 250 V nominal equipment (which will be almost all of your equipment), but do rush out to get rid of the crazing 1980s' RIFA capacitors (inside a golden clear

There is a worse smell fortunately rarely encountered any more and that is of a failed Selenium Bridge Rectifier. ------------------------------------------------------------------------ Oh good grief

Hi Should add, that in the USA if on 115VAC mains the main reservoir electrolytic could well be the reason for the smell. With switch mode supplies, which the 8920B will be, on 230VAC it is normally

Hi I have never worked on a HP8920B power supply, but I have worked on a HP8920A one. The A power supply did have mains input filtering and deteriorating capacitors could well be the reason for the

Is this same part used in the HP8920B? I ask because my otherwise fine unit outgasses a mild chemical smell when turned on. I am in the US.

Is this same part used in the HP8920B? I ask because my otherwise fine unit outgasses a mild chemical smell when turned on

It is pot luck but you can be careful. Look at the vendor and see if they sell other stuff with guarantees as tested. Then if this item says untested you can be suspicious. If the vendor sells

When looking to purchase something like a 85046a at auction, how concerned should I be about a unit's cosmetic condition, assuming it's being sold as-is?? How easy is it to damage the RF connectors,

Care to identify where? Sure, 230 V ± 10 % = 207 V..253 V. The UK tends to be at the upper end (historically “240 V”). But when items such as line filters are qualified for a working voltage,

Yes, please! Grü?e, Carsten

I modified the file in the e7495 Full 625 Upgrade I now have a PCMCIA Card that both upgrades the e7495 and patches the time/freq problem I have a zipped file that includes everything you need to make

Thank goodness it has been almost 60 years since I smelled that aroma. Sent from K5JLR

Hi This last email contradicts itself, also it is not unusual in the UK for the mains voltage to be or exceed 250VAC.? George G6HIG