error 10980 using SCXI strain null

[got]

i have a 10980 error return when i use SCXI_Stain null function under VB with 2 channel of my SCXI 1520(connect to a 6024 in multiplexed mode) the other channel works but this two one return value incorrect (10V et -10V) even after nulling (that return error ..!!)
what is wrong?

[Spencer S.]

Greetings,

Could you provide us with a little more information about your application? Where in your program are you calling SCXI_Strain_Null? Is it after a continuous acquisition? This can cause problems. Is only one channel returning an error, but both of the channels are not returning correct data?

Let me know, and I will try to provide some assistance.

Thanks.

Spencer S.

[got]

infact this error occure on channel 1,2 and 5 only when there is nothing connect to that channel...
after lmy test this is my conclusion and finally it's ok for my final application that just cause me solme pb during the test where not all the channel were connected...
but it's a strange pb ???!

for information i'm using continuous acquisition that was a pb in the beginning with strain null but i get answer in this forum and now it works (i just put the daq in non continuous before nulling..!! and also stop the double buffering mode..!)

thanx...
ps : if you got an explanation it would be interesting to read it...