| Products > Test Equipment |
| Flood of new Agilent 82357B GPIB-USB adaptors on eBay the real deal? |
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| rfeecs:
I just opened up a genuine 82357B and had a look. It contains: Agilent 1822-0639 GPIB controller, MPN 14063-501 from AMIS semiconductor (now ON Semiconductor) Cypress CY7C68013A-128AXC USB controller ATMEL 24C08A 8K serial EEPROM |
| pascal_sweden:
5-10 USD in BOM parts versus 553 USD for a new unit from Keysight. Go figure! :) |
| rfeecs:
--- Quote from: rfeecs on August 06, 2015, 11:09:03 pm ---I just opened up a genuine 82357B and had a look. It contains: Agilent 1822-0639 GPIB controller, MPN 14063-501 from AMIS semiconductor (now ON Semiconductor) Cypress CY7C68013A-128AXC USB controller ATMEL 24C08A 8K serial EEPROM --- End quote --- Crappy cellphone picture attached. |
| dadler:
I will open my eBay-special unit after work tonight and post similar pictures. Perhaps then we can decide once and for all if they are genuine or impeccable counterfeits. |
| ywara:
--- Quote from: pascal_sweden on August 06, 2015, 11:23:34 pm ---5-10 USD in BOM parts versus 553 USD for a new unit from Keysight. Go figure! :) --- End quote --- These things have never been and will never be worth $553. I have had a many of these fail in fixed installations unexpectedly on legacy systems I am responsible for. Occasionally the failure can be traced to bad contact on the internal USB connector and can be fixed with acetone and sandpaper, but usually they start failing on startup for no discernible reason. I will likely continue using them for compatibility, but any new systems I am responsible for will use something far cheaper and more reliable. Prologix offers a comparable (not drop-in, unfortunately) replacement for $150. These are, in my experience, far more reliable. $553 for a USB interface to an archaic, low-speed bus is bordering on insanity. |
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