start data read on positive trigger and stop on negative trigger on DAQ-6343

[d_2014]

Hello everyone,

I am using USB DAQ-6343.I have assign task to read data on positive edge of Digital signal and its Negative Egde I ahve to stop reading data.I am giving clock from external hardware.Now my query is i am giving particular No of data to read. Now if i change this number it is reading samples of that number.Now my problem is I am giving external clock So it should not read more data than clock frequency,

So help me out here, Whta other properties i have to set and tips of it.

Sorry that I could not attach Vi today,  wil attatch it later.

I am using DAQ-mx 9.1.Following basic Daq mx example.

with best Regards, 

[d_2014]

hello again,

this is my vi.

I gave initailly clock as 1KHz and data window duration 500ms. Gave no of data to be read 500 and it read correctly.

Now i reduce cloke to 500Hz(I.e half) then also it reads 500 samples which confuse me.It has to be read 250 samples only.

plz give a look into my code and give suggetions.