1 Getting Started
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4. If the distance between the test device and the I-V Measurement Unit requires
the use of extension cables, use a PV cable that is properly rated for the
maximum system voltage, with correctly installed connectors. Select a wire
gauge that will result in a suitably small voltage drop.
5. When extension cables are longer than 10 feet (one-way), lay the cables close to
one another to minimize added cable inductance.
6. If connecting at a fused combiner box, insert only one fuse at a time, to select
the string you wish to measure.
Powering-Up the I-V Measurement Unit
NOTE The I-V Measurement Unit can be turned on before or after starting the PC software.
When using the PVA-1000S or PVA-600+, the wireless USB adapter should be plugged
into your PC prior to launching the PVA software.
Press the power button once on the I-V Measurement Unit. Refer to Figure 29 below.
Figure 29. Powering-up the I-V Measurement Unit
The LED will blink on and off until the I-V Unit connects to your PC, at which time the
LED is steady ON. If a network is not established within 15 minutes, the I-V
Measurement Unit will turn off to conserve the battery.
In normal use, the I-V Measurement Unit will not go into sleep mode if the LED is steady
ON. However, the I-V Measurement Unit does enter sleep mode 15 minutes after it has
been placed in Pause mode by pressing the On/Off button (in Pause mode the LED is not
illuminated).
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