Check control signal and write in 1s, ignore control signal for the following 2s.

I am new to Labview, recently I use DAQ to receive 2 channels, one is expected signal and another one is control signal. If the control signal is higher than threshold (rising edge), write expected data in 1s. Then, ignore the control signal in 2 second. The process is repeated. The attachment is my program but it doesn't work. I use flat sequence to do 2 consecutive tasks but cannot ignore the control signal.
Any help is appreciate.
Attachments:
Save data with control signal.vi ‏187 KB

siva0182 wrote:
Find attached the picture of the vi where I tried to put in timers.one in each of the frame and at the end added one more frame just to measure the time elapsed .
The last frame and the frame with sourcemeter measurment show adifference of about 140 msec.
Is there any way to improve the speed of this portion?
Probably not. It sounds like the Keithly VI is taking 140 msec. You can try opening that up to see if there is anything in there that could be causing an unnecessary slowdown. But trying to tighten it up too much may cause occasional errors (such as timeouts) in trying to get a response back.
But surprisingly I tried displaying the actual timer value at the start and at the start of sourcemeter read function ..but the display of both indicators is almost equal with little difference of only 10 msec.????? I'm not sure which of the several timers you are referring to here. What is the value going into the wait function between the VISA write and the Keithly VI?
When you do benchmarking, the timer functions should be in a frame all by themselves. Having it mixed with another function or VI causes a bit of uncertainty as to when the time was taken. For instance, you dont' really know if the Keithly VI was started before the time was taken or after. (The time was probably taken first, but without a data flow or sequence structure dependency, you can't be sure.)

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