200-Channel In-Situ Test Bed, Fitted in Climatic Chamber

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.

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 etc.)
  • 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)
LabVIEW Application

Solution

Design of the measurement system (two Switch Systems 2750 with Plug-In Modules 7702, 7705 and 7708 and two SourceMeter 2400 from Keithley Instruments). Software development and programming in LabVIEW (National Instruments). Controlling the measurement hardware via GPIB and RS232.