4 Making Measurements
4-8
A low Fill Factor means that the shape of the I-V curve is degraded. This can be caused
by shading, soiling, or debris or equipment on the modules under test.
It is often helpful to clear the History table before moving on to the next combiner box.
From time to time, back up your data
The PVA software will remind you to back up your data. Always do this. It is possible
for PVA Project files to become corrupted. Also create a backup when you are finished
measuring a PV installation. Select Backup Project… from the File menu.
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