Stable Environment; Shielding Of Low Signal Measurements - Omicron Lab SPECTANO 100 User Manual

SPECTANO 100 User Manual
Figure 8-7 Measurement circuit, guarded electrode (C
8.3

Stable environment

The permittivity and dielectric losses vary with temperature and humidity. Therefore, we recommend
measuring the sample in a stable environment.
8.4

Shielding of low signal measurements

To improve the signal-to-noise ratio for low current measurements, do the following improvements on the
test setup:
► Put the test cell and/or test device into an EMC box to shield the test system from external noise.
► Increase the test voltage.
► Separate guard and ground.
► Ensure the cabling is also shielded.
For more information on sample dimension or test setup improvement, see our application notes
available at www.omicron-lab.com.
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