Teseq NSG 437 Manuel utilisateur
1
NSG 437 ESD SIMULATOR
USER MANUAL 601-272C
NSG 437 ESD simulator
NSG 437 ESD SIMULATOR
601-272CUSER MANUAL
1 Explanation of the symbols used in this manual 5
2 Safety 6
3 Introduction of ESD phenomenon 8
3.1 Electrostatic discharge (ESD) 8
3.2 Simulation 9
3.3 Effects on the EUT 11
4 NSG 437 12
4.1 The simulator 13
4.1.1 Function modules 13
4.1.2 Block diagram 14
4.1.3 Operating elements 16
4.2 System components 17
4.2.1 Power supply unit 17
4.2.2 Options 17
4.2.3 Discharge networks 18
4.2.4 Measurement adapters 19
5 Commissioning 20
5.1 Function test 20
6 Operation 22
6.1 Switching on 22
6.2 Operation and settings 23
6.2.1 Display 24
6.2.2 Voltage 25
6.2.3 Polarity 25
6.2.4 Counter 25
6.2.5 Repetition 27
6.3 Settings 27
6.3.1 Language 27
CONTENTS
6.3.2 Discharge 27
6.3.3 Activity Log 27
6.3.4 Threshold 28
6.3.5 Standards 28
6.3.6 Continuous operation 30
7 Test procedures 30
7.1 Standard-compliant procedures 30
7.2 Other situations 30
8 Vericationofthepulsedata 32
9 Typical pulse data 33
10 Maintenance 34
10.1 Calibration 34
10.2 Exchanging the R / C network 35
10.2.1 Reduction of pulse repetition rate through higher capacity 36
10.3 Repairs 36
10.4 NSG 437 system error messages 37
10.5 Disposal 38
10.6 Declaration of conformity CE 39
11 Technicalspecications 40
12 ESD standards 42
13 Warranty 43
14 Accessories 44
15 Addresses 45
5
Please take note of the following explanations of the symbols used in order
to achieve the optimum bene t from this manual and to ensure safety during
operation of the equipment.
The following symbol draws your attention to a circumstance where non-
observation of the warning could lead to inconvenience or impairment in the
performance.
Example:
1 EXPLANATION OF THE SYMBOLS
USED IN THIS MANUAL
This connection must not be confused with the main
power input.
The following symbol draws your attention to a circumstance where non-
observation of the warning could lead to component damage or danger to the
operating personnel.
Example:
Never connect or disconnect the pistol while system is
performing a test.
Symbols used on the product:
Danger
high voltage
Protective
earth terminal
Attention
refer to manual
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NSG 437 ESD simulator
The NSG 437 simualtor is not a toy! It is a professional tool and belongs only in
the hands of specialists and appropriately trained personnel.
The instrument must not be switched on unless a correctly connected earth
or earth cable (pulse current return path) is in place. The original earth cable
supplied with the instrument is to be used. Any replacement cables must be
fabricated in such a way that they cannot be accidentally connected to a mains
outlet socket.
Do not touch the test nger! There is a danger of an unpleasant electric shock
if the instrument is switched on (LC-display active).
2 SAFETY
This item of equipment, together with its accessories,
works at high voltages of up to 30 kV. Any careless han-
dling or non-observance of the operating instructions
can have dangerous consequences.
Only trained personnel may operate the instrument.
Personnel tted with a heart-pacemaker must not
operate the instrument nor approach the test rig while
it is in operation.
These operating instructions form an integral part of the instrument and must
be available to the operating personnel at all times.
7The instrument must not be used for any purpose other than testing the ESD
immunity of electronic equipment.
The construction of the simulator is not designed for use in an explosive envi-
ronment.
Each electrostatic discharge produces powerful electro-
magnetic interference.
Nearby electronic equipment can be seriously disrupted
unless the appropriate counter-measures are taken.
Perform ESD tests preferably in a shielded room.
If a network needs to be exchanged, the test has to be
stoppedrst,followedbyawaitingtimeofatleast5s
to ensure the voltage being internally discharged.
The instrument must not be opened. Repairs, maintenance work and internal
adjustments are only to be carried out by a qualied service engineer.
Use the instrument only in dry surroundings. Any condensation that occurs
must be allowed to evaporate before putting the simulator into operation. Long
periods of exposure to sunlight and excessive warming by external energy
sources are to be avoided.
Do not continue to use the instrument should any mechanical damage occur.
The instrument‘s housing and the cable have both an insulating and a screen-
ing function, which can only be assured while the housing is intact. Return a
damaged simulator to a Teseq service centre immediately for repair.
Teseq Luterbach, Switzerland and the associated sales organization accept
no responsibility for personal or material damage nor for any consequential
damage that results from irresponsible operation of this instrument.
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NSG 437 ESD simulator
Under appropriate ambient conditions, both material objects and even the
human body itself can become charged with electrical energy. This effect is
due to "electrostatics", a phenomenon that has been known since the earliest
times. Thales von Milet (600 BC) noticed how amber attracted very light particles
when it was rubbed. Touching a charged item against a conductive object leads
to a charge equalization through a spark discharge, which produces a brief but
powerful electro-magnetic eld.
3.1 Electrostatic discharge (ESD)
This effect can be explained as follows: Two insulating substances with differing
dielectric constants become charged when rubbed together, i.e. one material
gives electrons to the other one. This effect is known as electrostatic charging.
The same can happen to a person. When somebody walks around in a dry
atmosphere on carpet while wearing shoes with good insulating properties, a
charge of several thousand volts can be built up. If, now, that person comes
close to a conductive surface, the charge that he or she is carrying ows away
through a hefty spark discharge.
The high equalizing current that ows, and the associated large electromagnetic
eld that hence results, can cause electronic devices (computers, terminals,
process controllers, vehicle electronics, solid state devices, credit or memory
cards, etc.) to malfunction or even be destroyed.
3 INTRODUCTION OF
ESD PHENOMENON
93.2 Simulation
A systematic investigation of electronic equipment and installations to deter-
mine their electromagnetic compatibility (EMC) is, today, a necessity if one is
not prepared to suffer the economic disadvantages that could otherwise ensue.
As a logical consequence, appropriate testing is now a legal requirement for
the sale of electronic products within the EU.
The ESD test plays an important role in the range of interference sensitivity
tests. It simulates frequently occurring effects and guides the development
engineer to any weak spots in an instrument or item of equipment through a
combination of high voltage and high frequency properties.
A simulation device must be constructed such that it reproduces practical con-
ditions realistically. Furthermore, the results obtained (interference sensitivity
threshold) must be reproducible.
The interference immunity of an instrument is not only dependent on its con-
struction, it is also largely dependent on the quality or the consistency of the
mass production techniques used. Knowing this has led to the demand for
individual testing or at least random sample testing.
Further weak spots, which could affect the overall interference immunity, can
arise through the assembly of instruments into complete systems because of
the installation method used, the cabling and the earthing. An ESD check on
systems is therefore also prescribed.
Such tests provide valuable information about the immunity of the system
to effects that occur only sporadically under operating conditions and hence
represent difcult to detect sources of disruption.
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NSG 437 ESD simulator
The ESD simulator NSG 437 fulls the requirements of numerous applications
in an ideal manner, thus:
Ergonomic shape For non-tiring use
Operation Operating elements and display always in view of the
user. Constant check on the test values.
Microprocessor- All the functions are ”on-board”, including a pre-
control settable counter, pre-programmed test values,
discharge voltage etc.
Precision The test parameters are maintained precisely for
reliably reproducible tests.
Flexibility The specications prescribed in the standards are
more than fullled in every respect. The instrument
also offers many additional handy features.
Long-term operation Automatic long-term operation for stationary appli-
cations with the generator mounted on a tripod.
Application eld Development optimization, type-approval, EMC
certication, batch testing (individually), testing of
fully installed systems.
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