Thanks for the files. Janet. Wonder if anyone encountered the signal amplification problem. My detector give out slow-varying DC signal in couple mV range. My A/D board reads 0-5V and I need all the 16bit resolution. Where would I get a DC amplifier to solve this problem? Please give me some insight on this problem. Thanks Andrew __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com --- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] ---- For more information on Real-Time Linux see: http://www.rtlinux.org/~rtlinux/