22
Fill Factor:
FF = 100 *
(V
mpp
* I
mpp
)/(V
oc
* I
sc
)
This indicates the presumed efficiency of the PV module/string
as determined by the ratio of the maximum measured power
to the product of the short-circuit current and the open-circuit voltage.
KEY:
P
nom
1
= P
nom
* (1 - Deg * Age) = PV module nominal power calculated with degradation (if taken into account)
P
nom
= PV module nominal power (@ STC)
Deg. = Degradation (%)
Age = PV module age (years)
If Deg = 0 or Age = 0 then P
nom
1
= P
nom
11.4.
Other functions
11.4.1. "FS" (full scale) function
When the graphs are displayed, use the FS button in the upper right of the monitor to switch to full-screen mode.
The increased height of the graph gives a better view.
To return to the normal viewing mode, press the FS button again.
Full-screen view
11.4.2. Zoom Function
The zoom function can be used to enlarge a portion of the graph and allow a more detailed analysis of a given part of
the curve shown.
To use the zoom function, touch the screen with the stylus and drag to highlight the portion of the graph you want to
enlarge. During this operation, a white rectangle is drawn on the screen to help you define the area you want to enlarge.
When the stylus is removed from the screen, the zoom mode is automatically activated and the area defined is displayed
in full-screen mode.
In the top right corner of the screen, above the Full Screen (FS) function button, there are two command buttons to
control the zoom function. These buttons are:
