Re : PXI6070E wtih NIDAQ Reset problem and Measurement problem appears

[starfifghter]

I Have 5 PXI 6070E working in paralell mode with 5 SCXI 1143

The Labview software make the acquisition of 12 selected channel at 50 kHz on windows

The sofware is workin correcty since 2001 on windows NT
at the beginning of this year we made an upde ot the PC to go to windows XP through an MXI link

For 1 month we have the first problem the sofware did not start
  => we have to made a modification to reset the 5 PXI DAQ before make the AI Config

Now we have a new problem the measuremnt are bad for 160 mw injected we measure on some channels 160mv an
on ohters channels 80mv or 800mv

[ManuelR]

Hi Starfifgh,

Could you give me more informations?

What about the software? is it an application developped by some one (LabVIEW, CVI) or are you talking about MAX?

Concerning the measurement problem, does it also occur while testing with MAX?

[starfifghter]

The configuration is 5 PXI 6070E in parallel mode with 6 SCXI 1143

We start 3 differents configuations. Each configuration use 12 channels (max 4 on each PXI card)
config 1: PXI card 1 channels 0-3 PXI card 2 channels 0-3  PXI card 4 channels 0-3
config 2: PXI card 1 channels 4-7 PXI card 3 channels 0-3  PXI card 4 channels 4-7
config 3: PXI card 2 channels 4-7 PXI card 3 channels 4-7  PXI card 5 channels 0-3



The software was wrotten with Labview 5 and NIDAQ 6.9 on windows NT

Begining of the year we updated the software to windows XP with labview 8.0 and now NIDAQ 7.42

The staus today is: problem with configuration 3

   If the measurement is bad: the measurement with MAX is OK but with the software the value is bad
  
   If i made the PXI calibration => the meausrement is OK

   Now if i change configuration (measurement in an other configuration 1 and 2) and after i return to the same configuration
   the measurement are bad again.

Is there a possibility of NIDAQ changes in the default parameters and now the initialisation is bad ??

It seems to be sotware problems and not hardware problems

[ManuelR]

Hi,

You said that the measurements done with MAX are correct, that's a good point .

Did you try using LabVIEW exemples? If so, are measurements corrects?

You can find theses exemples at "help-> Find exemples "