Data acquisition, display and control of subsystems for the CFDC are done using the National Instrument's (NI)  LabVIEW graphical development environment integrated with NI Fieldpoint modular distributed I/O systems. LabVIEW programming was done by Original Code Consulting of Boulder, CO. The program contains a configuration editor for specifying data displayed and recorded, a data acquisition program offering graphical and channel data display, and a data exporter for viewing binary data or creating ASCII output files. The program is menu-driven and highly flexible. The Feildpoint system includes lightweight and compact analog I/O, digital I/O and thermocouple modules connected to a Pentium PC via a network module and RS232 cable. This modular hardware system may be easily expanded. A multichannel analyzer (MCA) PC card is used for data acquisition from the Climet optical particle counter. Data may also be recorded and displayed from a Condensation nuclei (CN) counter, either via serial cable or using a separate PC counter card. Typical data rates are 1 Hz, although 10 Hz is possible for some parameters.
 

Setup screen mode for experimental preparation

Data screen mode for monitoring during experiments