The Model 302 is available mounted inside the 8610C, 8610D, 410, and 310 GCs, or it can be mounted in a separate box for connection to other manufacturers' GC or HPLC detectors. The Model 302 data system consists of PeakSimple chromatography software for Windows, and a six channel, 20-bit high resolution A/D board.

When mounted in a SRI GC, the Model 302 controls the column oven temperature program, and the pressure program of the carrier gas electronic pressure controller (EPC). The eight available TTL outputs are connected internally within the GC to control functions like valve rotation, gas solenoid actuation, autosampler injection, etc.

When mounted in a separate box, the temperature, pressure, and gradient control outputs are available for use, but not connected to anything. The eight TTL outputs are wired to a bank of eight single-pole, dual-throw mechanical relays with screw terminals for easy connection to any user device which operates from a contact closure. Four remote start inputs allow run initiation from the user's GC or HPLC system.

Each of the six channels of data can be randomly assigned to one of four time bases, which allows independent start and stop times for four separate instruments. Data can be acquired at rates up to 50Hz per channel for one or two channels, or 20Hz for all six channels. The Model 302 is for use with Windows computers that have USB 2.0 compliant ports (manufactured in 1998 or later).