What is the relationship with sample rate and number of samples per channel?

[DieselPower]

In my world, if I wanted to sample for 10s at 10Hz (100S/ch), I would specify a rate of 10 and a sample count of 100.  This operation would take 10s to return data.  The task does not seem to behave this way.  No matter what rate and number of samples I choose, I get spammed with data at 1 Hz or faster.

What am I doing wrong?

[LVbum42]

Hey Michael,

What kind of hardware are you using and would you mind posting an example of your code so that I may better assist you?

Regards,

Isaac S. 

[DieselPower]

NI 9239 on a USB carrier or a PCI board.  I have tried this in the aquire continuous voltage sample program as well.

                For a = 0 To HSChannelCount - 1
                    With HSChannels(a)
                        TriggeredAITask.AIChannels.CreateVoltageChannel(.Device & "/" & .Channel, "", AITerminalConfiguration.Differential, _
                                                                     .Min, .Max, AIVoltageUnits.Volts)
                    End With
                Next

                TriggeredAITask.Timing.ConfigureSampleClock("", HSSampleRate, _
                    SampleClockActiveEdge.Rising, SampleQuantityMode.ContinuousSamples, HSSampleCount)

               TriggeredAITask.Control(TaskAction.Verify)

                TriggeredAIReader = New AnalogMultiChannelReader(TriggeredAITask.Stream)

                TriggeredAIReader.SynchronizeCallbacks = True
                TriggeredAIReader.BeginReadMultiSample(HSSampleCount, TriggeredCallback, TriggeredAITask)

[DieselPower · Accepted solution]

This problem was solved by doing a phone support request.  It turns out that the minimum sample rate of the NI 9239 is 14xx S/s.  I am not sure why there is a minimum sample rate, but now I must move on to the next issue discussed at this link:

http://forums.ni.com/t5/Multifunction-DAQ/How-can-I-read-gt-10X-samples-at-a-sample-rate-of-X/td-p/2...