9205 Analog Input Module

[SR1]

Hi,

NI- 9205 -  Analog input Module(ADC), 16-differential or 32 single-ended, aggregate,

The Data sheet says - 4us/channel conversion time.

If I am using this in 16-diff mode,

Ch        1  2  3  4  5     6 .......... 16

Time   0 4.....       20.........         64

in us

After convert start...

Is it possible to acquire(sample) the data for channels 1 to 5 after 20 us,  comeback and  re-sample them after 64us

or  wait for 64us (when conversion is done), before sampling!

Thanks in Advance.

sr

[GarPar]

Hi SR1-

     When you set your sample clock rate, you are setting how much time occurs between each sample on a particular channel.  So if you want 64 us between each sample taken, you can set your sample rate to 1/(64E-6) = 15,625 Hz.

     This should do what you want.  Let me know if you have any other questions.  Have a great day!

[SR1]

Gary,

I am looking at this way.

[SR1]

Gary,

I am looking at this way- 4us per/channel

1. If I want to sample after 4us, is ch1-data valid - availble for use

ch2 after 8us,,,,etc.

Or

2. Should I have to wait for 4us x16 = 64us to sample them, till all complete

which is the right way.

Advise please.

Thanks,

SR1

[GarPar]

Hi SR1-

     The data is available immediately after the conversion time.  Why do you ask?  If you are using LabVIEW, NI-DAQmx handles all of the low-level timing for when to pull the data from the card to LabVIEW.  You shouldn't have to worry about this as long as your sample rate and samples to read are setup correctly on a continuous acquisition (samples to read should typically be about 1/10 of sampling rate).

     I hope this helps.  Have a great day!