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5
MAINFRAME DESCRIPTION
The 3150 housing NSG is specially designed for EMC applications and is EMC approved.
5.1 Front panel
5.1.1 Reference ground connector
The earth connection between the CDN and the generator is realized via the shield of the HV
connectors. There is no need to connect the ground connector from the generator itself.
Without using a Teseq CDN, the NSG 3150 can be efficiently connected to the ground reference
plane using a ground strap connected to the reference ground connector point.
5.1.2 Surge output
These output (high, low) connects the surge output impulse to a 1-phase or 3-phase coupling unit or
to another external coupling unit.
These coaxial high voltage output are protected by a plexiglas window. The surge output is potential
free (floating). The inner conductor of each connector is the surge high and surge low connection
respectively, while the outer conductor (shielded) is connected to the NSG 3150
’s ground point.
Cable insulation for EUT surge output must be rated for 20 kV
5.1.3 Indicator LEDs
The five indicator LEDs serve to show the most important test system conditions:
LED indicator function
Description
Power on
Instrument/system in operation
Pulse
Shows the occurrence of a pulses or a test event
Pulse blinking
The generator is set to a safe position and need some seconds to
move the switch into the final position.
High voltage active
Shows that high voltage is present in the instrument (in line with
“Pulse” LED)
EUT-Power on
Indicates when the power supply to the EUT is present at the EUT
connector on the front panel
Error
Indicates that a system error has occurred
The LEDs switch on and off during the boot period and when errors occur.