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NSG 5500 Automotive transient immunity generator
2.7.1 Test set-up
The following set-up can be used to check the integrity of the output pulses. The scope probe should be in
conformance with the specifications outlined in ISO 7637-2.
Ground plane
High impedance
Oscilloscope probe
Oscilloscope
NSG 5500
output
(in module
FT 5531)
Picture 2–9: Test set-up with the LD 5505 or LD 5550 and scope.
2.7 Installation / set-up LD 5505 and LD 5550
Check the instrument for any mechanical damage. Report any damage found to the carrier immediately.
Both LD 5550 and LD 5505 modules are in usage. The term “LD Module” is used to refer to either of these
modules. All of this information applies to both modules unless specifically refenced by module name.
Ensure that the power is turned off on the NSG 5500 mainframe and that the battery input is disconnected.
Insert the cassette in the right most slot and push in fully. Screw in the four retaining screws fully.
If using the battery switch, ensure this module is present and inserted fully in the rear of the NSG 5500
mainframe.
It is vitally important that the unit is connected to a good, protective earth.
Turn on the mains input power on the NSG 5500 mainframe. After approximately a two second delay the
power LED (red) on the LD module should light. After a further two seconds of initialisation, the unit is ready
for operation. The software communications will not start correctly until this initialization time is complete.
Now the scope test setup shown in picture 2-9 below 26 should be connected and the output pulses should
be quickly checked to ensure that they are of the correct form and shape. When pulses are being generated
the relevant green LED (5 or 7, whichever is selected) should flash as pulses are output.
When correct operation has been verified, the DUT can be connected to the “OUTPUT” terminals at the front
of the unit, and the required tests can be carried out.
