Acquire and graph Counter input v/s analog vltg from sensor

Hello Folks,

For my project i need to acquire data from one encoder(counter) and one sensor (analog vltg).

I could program using VISA, but sampling rate not sufficient (nned 100sps), hence trying with 6008..

attached is the pic , tried with timed loop- if only counter/encoder data is being received, it works fine records fine.. combining both, gives me counter data only once in a sec..

How do i solve this..

Thanks,

Palvi