NSG 438
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4.2. System components
The basic set is packaged in a practical carrying case and comprises:
§ Carrying case
§ ESD generator NSG 438 consisting of a pistol and a base station
with a battery power supply
§ Discharge network 150pF / 330Ω
IEC / EN 61000-4-2 (2001)
§ 1 test finger each for air and contact discharges
§ Battery charger / mains power pack
§ Pistol stand
§ Operating instructions
This set contains all the items necessary under normal conditions to
conduct tests conforming to the
IEC / EN 61000-4-2 (2001) standard.
4.2.1. Battery charger / power supply unit
Power to the instrument is provided through a universal mains unit suitable
for input voltages between 80 and 240Vac. This same unit also serves as
a charger for the integral battery pack.
Charging of the battery takes about three hours. At this point a timer
switches the charger to a reduced charging current and the indicator lamp
changes from red to green.
The battery will also charge up when the instrument is switched off.
A full battery charge will suffice for several days of normal test operation.
Battery life expectancy:
§ Ambient temperatures over 50°C can lead to degradation of the
battery. If treated carefully, more than 300 charge / discharge
cycles can be expected without a noticeable reduction in
capacity.
§ The charger and battery-pack form a matched entity. The battery
must not be charged from any other unit and the charger is to be
used exclusively for the intended purpose.
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