Hello 
I'm using a serial Visa at 128000bps. I'm using a handshake thats working like this: I send a char from Labview to the Pic with Visa write then the PIC responds with 5bytes of data that are read with a Visa read. The problem is that I need a better sampling rate, right now the PIC is sampling at 96us and Labview is taking 62ms with the write-read-display cycle. So im loosing too much data. 
How can I solve this problem? 
Thanks in advance 
In the attachment im sending my vi. 
Download File:post-6880-1163876323.vi