data acquisition of two analogue input from two Chanels (USB NI 9234) (input 1 accelerometr signal input 2 tacho signal) in real time for vibration analysis

[IYED]

please sorry for my english; my problem is the acquisition of two analogue input  (input 1 accelerometr signal ; input 2 tacho signal) in real time because i have to analyse them.

when i try to acquire one signal i had a good result but the i have probleme in two signals i think the synchronisation is the source of probleme please help me this is my VI. 

[C-Dav]

Hello IYED and thank you for posting to the forums,

A few questions about your setup:

Are both the AI Voltage and AI Acceleration tasks referencing the 9234, or do you have another piece of hardware for the voltage acquisition?

Could you post a screenshot showing the bad synchronization in your data?  I'd like to find out what the actual problem is within the data you're collecting to try and back out what the cause might be.

Thanks!