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Flood of new Agilent 82357B GPIB-USB adaptors on eBay the real deal?
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Ryano:
Is there any advantage to get one of these new in the box with CD and manual vs used without for about half the price?
pascal_sweden:
100 USD is indeed expensive!

A GPIB-USB adaptor is not rocket science at all.

You can probably build one yourself at a fraction of the cost using the links below :)

www.1000bit.it/support/manuali/download.asp?id=882

ftp://ftp.zimmers.net/pub/cbm/documents/projects/ieee-488/index.html

http://6502.org/users/andre/cbmhw/ieee488/index.html
dadler:

--- Quote from: pascal_sweden on August 06, 2015, 08:03:31 pm ---100 USD is indeed expensive!

A GPIB-USB adaptor is not rocket science at all.

You can probably build one yourself at a fraction of the cost using the links below :)

www.1000bit.it/support/manuali/download.asp?id=882

ftp://ftp.zimmers.net/pub/cbm/documents/projects/ieee-488/index.html

http://6502.org/users/andre/cbmhw/ieee488/index.html

--- End quote ---

My time to build such a device is worth so much more than $100. Maybe as a learning experience-but most people don't get their jollies by building interface hardware like this. Would much rather build something more interesting.
rfeecs:
Or you could buy a new one from Keysight for $553.  :o
http://www.keysight.com/en/pd-851808-pn-82357B/usb-gpib-interface-high-speed-usb-20

I wonder if this glut of ebay units is related to the Agilent - Keysight split.  Maybe there was a warehouse full of excess inventory Agilent labeled units (with Agilent logo molded into the case), and Keysight decided they didn't want to deal with them, so someone is dumping them?
lukier:
I believe these adapters (genuine, fake or Beiming) are just NAT9914, CY7C68013A, GPIB drivers (75160, 75162) and small I2C EEPROM that holds Agilent's USB VID/PID. Firmware for the EZ-USB is uploaded by the PC.

Not really rocket science, just slightly more complex than FT2232 based JTAG and $100 is still a bit much (at least for me). Agilent's price is just bonkers.
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