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Flood of new Agilent 82357B GPIB-USB adaptors on eBay the real deal?
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HighVoltage:
Well, I just opened a REAL genuine Agilent 82357B

What a difference !
The one shown in pictures of my previous post are from a FAKE one!
It is a difference between night and day between the fake and the real one.
But it is only really noticeable, if you have one for comparison.
Unreal !
 
Anyone in the market to buy my fake one?
It works great!

TheAmmoniacal:

--- Quote from: HighVoltage on August 29, 2015, 04:25:23 pm ---Well, I just opened a REAL genuine Agilent 82357B

What a difference !
The one shown in pictures of my previous post are from a FAKE one!
It is a difference between night and day between the fake and the real one.
But it is only really noticeable, if you have one for comparison.
Unreal !
 
Anyone in the market to buy my fake one?
It works great!

--- End quote ---

Could you post similar shots of the genuine one? (to compare)
dadler:

--- Quote from: Electro Fan on August 29, 2015, 04:47:18 am ---
--- Quote from: dadler on August 19, 2015, 08:26:34 am ---As promised, here are pictures of the Clone unit I purchased for $51 shipped @ http://www.ebay.com/itm/82357B-GPIB-USB-Interface-Compatible-AGILENT-82357B-new-version-/251692772284

I actually think this one is higher quality than the faux-"Agilent" version that I paid ~$130 for. The circuitry is clearly different, though. Seems to work fine in BenchVue. For the price, I think this is a pretty good deal. I've only played with it for about 30 minutes, but seems ok so far.

I really am surprised that they can blatantly sell products with the "Agilent" name plastered all over them, and not get hassled by Agilent/Keysight?



A few more pictures: https://www.dropbox.com/sh/kse4k3pw103qaq9/AACxiQPkh3lCRIQAjZYc2R6Ha?dl=0

--- End quote ---

Dadler, your last photo shows the interface connected to your test equipment with a cable but presumably the interface could plug directly into the test equipment without the cable?   And it should work with GPIB and "HPIB"?  Thanks, EF

--- End quote ---

It can plug directly into the unit, I just don't have much clearance behind the PSU.

And GPIB/HPIB are equivalent. HPIB is the old name when it was Hewlett-Packard exclusive, rename GPIB "general purpose" vs "HP".
Bud:

--- Quote from: SkyMaster on August 29, 2015, 03:15:31 pm ---Yeah, but your "Do It Yourself workhorse thingy" is genuine  :-+
While the counterfeit "Agilent 82357B GPIB-USB adaptor" from eBay is... counterfeit  :--

--- End quote ---

Sure it is, but it only was good for use with one instrument at a time (did not have proper bus buffers) and the firmware had  to be updated for every new instrument. It also was prone to unexplained hang ups during transfer of big chunks of data (i.e. VNA S-parameter files). GPIB signaling is convoluted, I gave up at trying to debug, though it also may had been the Microchip Serial USB framework which was giving the headache.
HighVoltage:

--- Quote from: TheAmmoniacal on August 30, 2015, 05:10:25 pm ---Could you post similar shots of the genuine one? (to compare)

--- End quote ---
Sure, here you go....

Let's start with the housing.
Real: copper colored metal coating inside the shell housing (Conductive < 1 Ohm from end to end)
Fake: No metallic coating inside

USB connector
Real: metal shielding around the USB connector on the PCB
Fake: No shielding at all

 
Notice that the light pipe in the fake one is loose in the housing and the real one holds the light pipes really good in position
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