7
6. DISPLAY UNIT
The I-V TRACER 935 has a 4.3" colour touch-screen LCD display that displays function access icons, menus, and
graphs of the I-V curves of the panel or string of panels measured.
Main screen
Graph Screen
7. POWER SUPPLY
7.1. Battery life
The battery icon in the lower right part of the display indicates the battery's charge status. The number of bars in the
icon is proportional to the charge level.
Battery fully charged. Remaining life approx. 12 hours
Battery semi-charged. Remaining life approx. 50 minutes
Battery low (blinking symbol). Remaining life approx. 10 minutes
7.2. Charging the batteries
The battery is charged with the INSTRUMENT OFF, using the power supply unit supplied with the instrument, which is
connected to the dedicated jack.
It is recommended that only the power supply unit provided with the instrument be used. This type of power supply unit
is specific to the instrument and ensures electrical safety.
If the battery is fully discharged, the charging time is approx. 5 hours.
7.3. Mains power supply unit
The mains power unit accepts voltages ranging from 90V to 260V-50Hz. The protecting fuses are inside the mains
power unit and are not accessible.
NOTE: If the fuses blow, do not replace them, but send the power supply unit to the service centre for inspection.
ATTENTION: use only the mains power unit to charge the internal batteries.
Before using the instrument to make measurements, make sure that the mains power unit is disconnected.
8.
ON/OFF SWITCH
To switch the instrument On, press the
button and hold it down for approx. 3 seconds
NOTE
: If, when the key is released after starting up, the instrument switches itself off, the batteries are not sufficiently
charged. Charge the batteries before use.
To switch the instrument Off, press the
button and hold it down for approx. 3 seconds