Hi all,
There's some seller on Ebay offering Agilent 10073C oscilloscope probes at a knock-down price and naturally I bought one like a complete idiot would. Anyway, this is supposed to be a 500Mhz passive probe so I decided to compare it against my existing selection of passive probes just to get some idea if that bandwidth really was as advertised. So I set up my Marconi 5.4Ghz RF signal generator for 50-500Mhz output and tested the probes against it one by one. Obviously the lower BW probes I have couldn't make the grade and fell flat on their faces well before the half-gig mark and some before 100Mhz even. That was of course expected, however, the Ebay one's performance was no better and possibly a bit worse than an old 150Mhz Tek probe I had lying around and it simply could not cut it even at 300Mhz, let alone 500.
However, before I shoot my mouth off and complain about this seller sending me a fake Agilent probe, I thought I'd best check with the Panel here to make sure I haven't forgotten to allow for anything in my testing. The scope I am using for this test is a 350Mhz Tek analog one and it can 'see' waveforms perfectly well at half gig when connected with a high bandwidth probe (my 3.5Ghz one) so I know the scope's not at fault.
Any suggestions?
Jinxie