I hear what your saying about the ebay sales of used gear. Got the Fluke 8050a in today that I took a chance on. The seller claimed to have not tested it, yet took the time to photograph it with the power on and the display showing 0000. When I got it one of the batteries was at 0.00 volts and the entire front end was blown out. Once I replaced about 6 components in the front end and the batteries it's now up and running and appears well within it's rated specs or a little better. This time I lucked out, if it were a hybrid chip for example that was blown I would be looking at investing more to get a questionable piece of gear up and running..hoping that it would meet the specs it once did. This is all not to say I don't mind taking chances.
So with the 3457a how much weight does the Self Test Passed message hold ? I notice many sellers like to post that. I prefer the sellers that show something actually being measured.
Thanks, and happy holidays.
Jeff
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On 12/24/2012 1:03 PM, marvgozum wrote:
If both DMM meet your needs, then the chance it will work coming from unknowns via eBay, and easier to maintain DIY is your goal, the 3456a. If you need more updated features including amps but are willing to risk requiring a factory cal, repair and the costs it requires, 3457a.
3468a is not a system class DMM, but a general purpose DMM very much like he 3478a but is much cheaper as it doesn't support the GPIB bus but uses the then popular HP calculator interface. The 3479a is not a DMM, AFAIK.
--- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>, Jeff Machesky <jeff@...> wrote:Of the two meters, 3456 or 3457 which would be the smarter
purchase ?
In the interest of saving space I'm also looking at the HP 3468a or
3479a. I'm not seeing a major difference between the two except for
perhaps some lower ranges on the 3478a. Any helpful info regarding
those
devices.
If I can score a 3456a or 3457a for a reasonable price then I'll be
heading that direction. At the moment I'm stuck doing projects with
4,000 count B&K meters and a 20,000 DMM on the Tek 2465 which is not in
cal to it's spec. So my purchases will be pretty soon. I have a Fluke
8010 on the way which I'm sure will also need cal.
Thanks,
