angye

i got another way please check file RecordLoopTimes.vi

can you send me the vi file which your telling

thank you for reply, but problem is , i have a camera , this is gives data 30 Hz sampling frequency, means 30fps, means 30 samples per second, time difference between each sample is 1/30 = 0.033 sec. now i want to calculate time difference between each sample as vi run for camera gives data. for that i want previous time of sample and current time of sample .

i want loop timing for while loop. only i want running current time value and just previous time value means before current value. how?