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SPECTANO 100 User Manual
8
Setup improvements
8.1
Error correction
24
To eliminate, for example, the stray capacitances and unknown capacitances
between the leads of the used test cell we recommend performing air reference
measurements. The error correction proceeds as follows:
1. Depending on your test cell type, insert either a spacer between the
electrodes or adjust the electrodes with a locking screw so that you can
measure the air gap height.
Note: We recommend using a small spacer (lower than 5 mm) consisting of
a material with low permittivity and especially low losses, for example PTFE
or PE. Beyond the spacer surface must be flat at all points.
Electrode
Spacer ring
Electrode
with guard
Figure 8-1
Figure 8-1
re 8-1
Adjus
Adjusting the
Adjusting the air gap height by using a spacer
Electrode
Electrode with
guard ring
Figure 8-2
Adjusting the air gap height by using a locking screw
(lower than 5 mm) consisting of
ially low losses, for example PTF
st be flat at all points.
at at all points.
Input
Output
Input
Output
pacitances
ng air reference
erence
er between the
een the
screw so that you can
at you can
han 5 mm) co
w losses, for examp
Air gap height
Height adjustment
with locking screw
Air gap
height
nce
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