- #Keysight 82357b drivers for free#
- #Keysight 82357b drivers serial number#
- #Keysight 82357b drivers driver#
At every start of the Keysight connection expert software, this software is transferring the firmware via USB into the microcontroller. The microcontroller does not contain any firmware, only a bootloader. There is also a PLD or FPGA from XILINX with some glue logic between the microcontroller and the GPIB controller, that's all.
#Keysight 82357b drivers driver#
Scrapping or give it a try to fix it? I decided that I have enough time, so I gave it a try to repair! The interface consists mainly of a Cypress microcontroller for the USB handling, an Agilent branded GPIB controller, driver chips for the GPIB data and control signals and two sps voltage regulators for the internal 5V and 3.3V supplies. And I found these two broken interfaces again somewhere in a box with electronic junk. I have repaired several instruments now, that had laying around in a shelf since years. Now, whilst the corona crisis, I have enough time to complete some old unfinished repairs. The two interfaces were laying in the shelf together with other unfinished repairs for about two years. There are a lot of discussions about these interfaces and I have seen several messages about fake 82357Bs that has stopped working after some month in use, like mine. The other two 82357B are still in their unopened boxes. This one worked in the last two years and did not shown any problems at all until now. I replaced it with a third interface that had arrived meanwhile.
Now It looked like a problem with the control lines of the GPIB bus. Every connected unit gave a GPIB error message while trying to connect and communicate with the device.
After another 6 month the second interface failed in a similar way.
#Keysight 82357b drivers for free#
So, I agreed with the seller that I buy two further interfaces, what I wanted to do anyhow and I got a third for free as a replacement. Too much effort for me, I did not want to do that. I contacted the seller for a refund, but he wanted that I send back the unit to China. I replaced the 82357B with the second one, everything was back working. It seems that the data transmission was broken somehow. I only could see some instrument with its address, but it did not answer to any command, not even to "IDN?". The first interface suddenly failed, the Keysight connection expert software recognized an active unit at the bus, but could not communicate with it. Both interfaces were in full working condition when they arrived from China. But these units were much cheaper than the genuine Agilent 82357Bs and good enough for my home lab.
#Keysight 82357b drivers serial number#
The serial number at the box did not fit to the actual serial number of the unit, the functional test certificate was missing a serial number and there was also no signature, therefore it is a completely useless sheet of paper. It was clearly a kind of fake or black market selling. Bevor several years I bought two of the well-known faked (?) Agilent 82357B USB to GPIB Interfaces.
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