SafeGuard MegaGuard WalkPlus, Инструкция по эксплуатации

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MEASUREMENT
First of all connect the ground to one of the two GND input.
Then connect the probe to the instrument
GROUNDING POINTS
1) GND INPUT
2) GND INPUT
3) GND TOUCHPLATE (internally connected to the two GND inputs)
The standard IEC-61340-4-5 says that the operator shall take hold the probe and
before to start the walking test shall momentarily touch an earth bonding point.
For this reason in the back of the instrument there is a metal touchplate connected
to the two GND inputs that the operator can touch whenever he needs.