Task
Design and controlling of an in-situ test bed with 200 measurement channels. This test bed has to be integrated
in a climatic chamber with three climes, one upon the other. Its task is the long-time analysis of the properties of solder
connections under different conditions.
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Requirements
- Data aquisition on up to 200 channels
- Temperature and/or time triggered measurement cycles with very flexible trigger conditions
- Individual settings for each measurement channel
- Free selectable measurement current (1 mA - 1 A)
- Optional permanent current for additional device stressing
- Visualisation and qualitative evaluation of measurement results (graphical and tabular) during and after measurement
- Safety fallbacks for system exceptions (power outage, emergency stop a.s.o.)
- Measurement data are saved as ASCII file
- Developing of a self-contained software (installation with setup, no additional run-time engines required)
- Consideration of several aspects of an unsupervised long-time data aquisition
- Offline data analysis with common software packages (Microsoft Excel, Microcal Origin)
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Solution
Design of the measurement system (two Switch Systems 2750 with plug-in modules
7702, 7705 and 7708 and two Source Meter 2400 from Keithley Instruments).
Software development with LabVIEW (National Instruments) under Windows NT/2000.
Controlling the measurement hardware via GPIB and RS232.
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