LRS Micro-g LaCoste FG5, Manual, Page: 25 / 149

Design: Components and Function
2
2.4.1.REQUIRED HARDWARE
A Pentium II or better PC running Windows98©
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Memory: >32M RAM
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Hard Drive: 500Mb or larger recommended for high density data storage
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Combination A/D converter and Parallel Input-Output (PIO) board
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Time Interval Analyzer (TIA)
2.4.2.OPTIONAL HARDWARE
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Micro-g Solutions Environmental Sensors Package
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Micro-g Solutions Rotation Monitor
2.4.3.SOFTWARE
The FG5 software, “g”, is a Windows©-based application. The software
provides FG5 data acquisition, real-time processing, post processing, and
diagnostic testing. It also allows the user to customize the data acquisition for
each site including input/output files, printing options, and session control. The
software also allows user input of site-specific information such as site
name/code, geodetic coordinates and elevation, nominal air pressure, and
gravity gradient. In addition, the software allows the user to apply (or not
apply) all the gravity corrections independently. These options are available
both in the real-time and post-processing modes.
See the “g” Software Manual for additional information.
2.5. Electronics
2.5.1.TIMING SYSTEM
The timing system (Figure 2-11) consists of four main components:
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Avalanche Photo Diode (APD)
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