I wish to use an EG&G Ortec Turbo MCS (model 914) to record selected mass channels versus a time (summed average of laser shots) while tuning a dye laser. Has anyone written such code for gating on selected mass channels for spectroscopic data acquisition? Thank you in advance. * Fredrick (Fred) C. Hagemeister * Dept. of Chemistry * Northwestern University * Technological Institute * 2145 Sheridan Road * Evanston, IL 60208-3113 * phone: (847)467-2340 * FAX: (847)491-7713 * home: (847)509-7895 * email: [log in to unmask] %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%