HT instruments SOLAR I-V - Manual (Page 42)

I-V400 - SOLAR I-V
EN - 40
21. The instrument displays a screen similar to the one
reported here to the side, where:
 Vdc = DC output voltage from module/string.
 Irr = irradiance measured by supplied reference cell
 Tc = temperature of module. The herewith options are
available for this field:
 AUTO  automatic mode of temperature measurement
 Number  MAN or AUX mode of temp. measurement
 “ - - - “  AUX mode with no connected probe
 Module = type of selected module
 Temp = measurement mode of module temperature
 The symbol “
” fixed at display means that a stable
RF connection is established with the remote unit
SOLAR-02
15/05/10 15:34:26
V d c = 3 6 7 V
I r r = 1 0 4 5 W / m 2
T c = 4 5 ° C
Module: SUNPOWER 210
Select I – V
CAUTION
At the press of GO/STOP key some different error messages can be
displayed by the meter (see § 6.3) and, due of this, the test cannot start.
Check and remove, if possible, this error message before start the test
22. Press GO/STOP key to start the test. If none of the
previous error messages are detected, the message
“Measuring…” is shown on the display for some seconds,
depending on the level of power during test.
15/05/10 15:34:26
V d c = 3 6 7 V
I r r = 1 0 4 5 W / m 2
Tc = 45 °C
Module: SUNPOWER 210
Measuring…
Select I - V
23. At the end of test, the values of typical parameters (all
referred to a single module in standard conditions STC)
are shown by the meter together with the final response (§
6.2.3) based on the automatic calculation performed and
relevant to:
 Translation of I-V curve to STC condition
 Verification of tolerance % of the maximum power
declared by the manufacturer.
15/05/10 15:34:26
V o c = 1 5 . 2 V
V m p p = 1 4 . 7 V
I m p p = 4 . 7 A
I s c = 5 . 2 A
P m a x = 2 0 0 W
F F = 7 7 . 1 %
D P m a x = 2 . 1 %
Results @ STC – Response: OK
Select I - V
24. Press ENTER for the visualization of measurement results
referred at STC or OPC conditions both in numeric and
graphical mode (§ 6.2.3)
25. Use the arrow key
 for the selection of table or graph
visualization
26. Press SAVE key to store the result of test (see § 7.2) or
ESC/MENU key to exit without saving and to go back to
the main menu.
15/05/10 15:34:26
V o c = 1 5 . 2 V
V m p p = 1 4 . 7 V
I m p p = 4 . 7 A
I s c = 5 . 2 A
P m a x = 2 0 0 W
F F = 7 7 . 1 %
D P m a x = 2 . 1 %
T a b l e 
G r a p h  – Response: OK
Select I - V