Products > Test Equipment
Flood of new Agilent 82357B GPIB-USB adaptors on eBay the real deal?
<< < (34/83) > >>
orin:

--- Quote from: orin on September 26, 2015, 12:58:56 am ---
Oh, I'm not concerned about returning the device.  This problem was easy enough to work around.  I will try a different instrument... Mr 5335A, your turn!

--- End quote ---


Well, I never got to trying the 5335A due to the general incompatibilities of the Keysight IO Libraries.  The 5335A does not send an EOI with its output; you have to either read exactly 21 bytes, or terminate a read on '\n'.  No way I've found of configuring this that I've found to work - there is an EOS setting for the adapter in Keysights configuration, but it doesn't seem to do anything.

Then NI VISA decided not to see any devices from Keysight VISA, even though I had the correct passport selected.  Solution: change the interface name from GPI0 to GPIB1 in the Keysight configuration.  There was a hidden configuration for a GPIB0 somewhere in NI VISA that prevented it looking for a GPIB0 from Keysight VISA.

Next, make the remote Keysight VISA work again since it's now seeing a ghost instrument that is different from that shown on the remote machine and only showing.  Solution summary:

1. Install the latest Keysight IO Libraries.  2. Keysight's remote VISA connects to the SICL gpib name, not the VISA gpib name and yes, they can be different.  So I made them the same for the 82357B and reconfigured on the remote machine.

Now it was only seeing one of two instruments on the remote machine.  Autoscan is failing due to the timeout reading from the 5335A and not going on to query the 3456A.  No way of telling the autoscan to continue on the remote machine, though you can on the local machine.  Solution: manually configure the instruments on the remote machine.

Now I can see both instruments locally and remotely, both with Keysight's "Connection Expert" and NI's MAX.  NI's test panel actually configures the line termination character properly and can read data from the 5335A correctly without timeouts.





Scottjd:
So I just purchased one of these. Looked authentic, sealed, new in box, yada yada, yada.

I posted about this in another thread I started and was posted to this thread of fake or not.

Anyway, I'm far from rich, this is a home hobby. So I just called keysight. Customer service was friendly and had no problem looking up the serial number. She said it was from the Malaysia plant, shipped from the plant on November 29, 2009. This matches the certification date of November 10 being tested. And the label on the box of November 02. Box is made first, then item is tested, then it's shipped and logged. The date in their system is just the shipping date it left the plant to a reseller.

They are going to email me a copy of the testing certificate and it should match the unique number on mine that's looks like a photo copy.

Well of the test cert matches what the plant emails me next week I'm good to call mine authentic despite the little changes. It's just old stock from 2009, but the warranty should still be good and it was only $130, not the $550 listed on keysight web site. 

I'll try to get pictures up. Keysight may also chime in, she mentioned she would pass on the concern of fakes to the public relations department. They may be able to provide us some pictures showing the changes with this hardware over the years (I hope).

Scott
deadlylover:
Nice work chasing up Keysight on this issue, I'm looking forward to what they have to say.   :-+

Hopefully it's something innocent like an earlier revision, I don't recall anyone posting pictures of a known genuine adaptor that's been manufactured before the late 2009 suspect ones...I think.
dadler:

--- Quote from: Scottjd on November 05, 2015, 03:29:58 pm ---So I just purchased one of these. Looked authentic, sealed, new in box, yada yada, yada.
It was a Amazon prime buy, I would rather deal with Amazon for returns then eBay. Plus it's a local return shipping and if it's fake then I don't pay for return shipping.

I posted about this in another thread I started and was posted to this thread of fake or not.
He thought I wouldn't open it for return reasons, he didn't know me. I cracked it open and took a look.
I found a few similar items mentioned on hear like the missing sheild on the USB mini end of the cable. Not gold colored coated inside the plastic. Inductors marked with 3 dots, not 220. And so on. CD was also scratched. Another thing that caught my eye is it looked like the test certificate was photo copied, or maybe just a bad laser printer that needs cleaned?

Anyway, I'm far from rich, this is a home hobby. So I just called keysight. Customer service was friendly and had no problem looking up the serial number. She said it was from the Malaysia plant, shipped from the plant on November 29, 2009. This matches the certification date of November 10 being tested. And the label on the box of November 02. Box is made first, then item is tested, then it's shipped and logged.
The date in their system is just the shipping date it left the plant to a reseller.

They are going to email me a copy of the testing certificate and it should match the unique number on mine that's looks like a photo copy.

I guess the point is things change. My font on the PCB board does not look the same as the pictures, and the sheild on the USB cable may have been added on later made ones, or ones before mine. It depends on the manufacturing date. No labels on the bottom chips on the PCB, also may depend on when it was made.
Even the stamped lettering on the enclosure.

I should mention that the pictures show PCB version A, and mine is noted version 002.
Well of the test cert matches what the plant emails me next week I'm good to call mine authentic despite the little changes. It's just old stock from 2009, but the warranty should still be good and it was only $130, not the $550 listed on keysight web site. 

I'll try to get pictures up. Keysight may also chime in, she mentioned she would pass on the concern of fakes to the public relations department. They may be able to provide us some pictures showing the changes with this hardware over the years (I hope).

Scott

--- End quote ---

Not to rain on your parade, but even if they do send you a certificate, and it matches the unique number on yours--how are you going to conclude that you don't have a clone/counterfeit? My serial number matched the website too. If I were cloning products (not my short-term plan as a career goal), I would at least make an effort to clone the documentation too.

All of these fakes (I am now certain that at least mine is fake, due to the solder quality, internal build quality, and other factors), come from a short run in 2009. Yours also being from 2009 is at least arguable circumstantial evidence that yours is like ours.

I won't leave our hope for the possibility that we are all wrong, but things are not looking good here...
rx8pilot:
I bet that if you purchased a bunch of them, the 'unique' numbers would start repeating......
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod