I am trying to verify the writability of calibrated eeprom...is it possible outside the calibration lab?

[JenW]

I am trying to verify that the nonvolatile Calibration EEPROM for the PXI-6115 Controller card is only accessible by Calibration technicians.  It cannot be written to or modified in any way.  The letter of volatility states it has 4k x 8-bit of non-volatile, limited read/write access from the API.  Only 5 bytes are avail. for user-defined (custom) data.  Does that mean the API and the 5 bytes are PW protected and can only be customized by Calibration techs or does that mean they are available for anyone to write to and save on the card?

I am also trying to verify the same information for the PXI-5411 and the PXI-4060 cards as well. 

[Ray.R]

You may want to post your question in the Multifunction DAQ forum located here: https://forums.ni.com/t5/Multifunction-DAQ/bd-p/250

[smercurio_fc]

You might also want to consider contacting NI directly via your local rep for this kind of question.

[JenW]

Wish I could contact a rep.  It would make this much easier...

[Seth_B.]

It sounds like you are working on a letter of volatility.  We have a list of memory for the 6115 here: Letter of Volatility for S Series DAQ Devices.  As far as the calibration EEPROM, the EEPROM is password protected, but the password is publicly available in the B/E/M/S/X Series Calibration Procedure.

Hope this helps!

[nayer]

Here is the Declassification of National Instruments Arbitrary Waveform Generators and Function Generator and Declassification of National Instruments Digital Multimeters (DMMs) and Power Supplies. 

Hope this helps !

NI-khil

[Tom_W_[DE] · Accepted solution]

Hi JenW-

The 5 bytes of "user defined information" are writeable by anyone who has access to the device via NI-DAQmx.  In LabVIEW, you can write (and read) those bytes via the Calibration Info property node.  In the C interface, there's a corresponding attribute to write and read the same.  The rest of the EEPROM contents can only be modified by calibration software and can not be written or read directly via NI-DAQmx.

Hopefully this helps-

[JenW]

Thanks, I think this is exactly what I was looking for.