Activates alphabetic characters.
Returns to the previous menu without changes.
Note
• If Backspace is held for 2 s, all characters will be selected.
Hint
Long press on some keys opens additional keys.
4.4
At start up and during operation the instrument performs various safety checks to ensure
safety and to prevent any damage. If a safety check fails, an appropriate warning message
will be displayed and safety measures will be taken.
External voltage between DC+/PE or DC-/PE
terminals
Insulation resistance test cannot be carried out.
• Possible reasons: connection to PV
Insulation test voltage is lower than open circuit
voltage of tested PV string.
Insulation resistance (Roc) test cannot be
carried out.
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