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Ametek Teseq NSG 437 ESD User Manual
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Ametek Teseq NSG 437 ESD User Manual

Ametek Teseq NSG 437 ESD User Manual

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NSG 437 ESD SIMULATOR
USER MANUAL
601-272C
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Summary of Contents for Ametek Teseq NSG 437 ESD

  • Page 1 NSG 437 ESD SIMULATOR USER MANUAL 601-272C Go to Product Page with How-To-Video...
  • Page 2 NSG 437 ESD SIMULATOR USER MANUAL 601-272C NSG 437 ESD simulator...
  • Page 3 CONTENTS Explanation of the symbols used in this manual Safety Introduction of ESD phenomenon Electrostatic discharge (ESD) Simulation Effects on the EUT NSG 437 The simulator 4.1.1 Function modules 4.1.2 Block diagram 4.1.3 Operating elements System components 4.2.1 Power supply unit 4.2.2 Options 4.2.3...
  • Page 4 6.3.2 Discharge 6.3.3 Activity Log 6.3.4 Threshold 6.3.5 Standards 6.3.6 Continuous operation Test procedures Standard-compliant procedures Other situations Verification of the pulse data Typical pulse data Maintenance 10.1 Calibration 10.2 Exchanging the R / C network 10.2.1 Reduction of pulse repetition rate through higher capacity 10.3 Repairs 10.4...
  • Page 5 1 EXPLANATION OF THE SYMBOLS USED IN THIS MANUAL Please take note of the following explanations of the symbols used in order to achieve the optimum benefi 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.
  • Page 6 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. 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.
  • Page 7 The 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.
  • Page 8 3 INTRODUCTION OF ESD PHENOMENON 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.
  • Page 9 3.2 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.
  • Page 10 The ESD simulator NSG 437 fulfils 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.
  • Page 11 3.3 Effects on the EUT The most significant interference components of an electrostatic discharge are of high frequency nature. The interference paths and effects have to be assessed in the range from about 30 MHz to multi-GHz. The extremely rapid rise time of a discharge affects an object under test mostly through: magnetic HF-coupling between electrical conductors in the electronics and the discharge current path.
  • Page 12 4 NSG 437 By using the latest materials, construction methods and manufacturing tech- niques for the robust housing shell, together with highly insulated modules, the newest high voltage technology, the touch-sensitive operating panel and a control unit built using the SMD-technique, it has been possible to integrate all the functions that a comprehensive simulator system should offer into one compact instrument.
  • Page 13 4.1 The simulator The NSG 437 simulator is modularly constructed from a number of discrete function units. 4.1.1 Function modules The base station contains the high voltage generator. Base station Pistol Display and touch-panel Discharge network (exchangeable) on / off button The pistol houses the interchangeable discharge network, high voltage relay, the exchangeable test finger, electronics and the touch sensitive input / display...
  • Page 14 4.1.2 Block diagram The various function units are shown in the block diagram: Block diagram of the base station: High voltage active µP control unit Buzzer Communication to Meas. discharge pistol circuit High voltage generator + / - High voltage to discharge pistol Power on Power...
  • Page 15 Block diagram of the pistol: Display with touch - panel Buzzer µP control unit Discharge High voltage network relay The microprocessor controls and monitors all the simulator functions: Touch-panel entries are checked for plausibility. Unacceptable entries are rejected and an acoustic warning notifies the user of the error. Values entered are clearly shown on the large display screen.
  • Page 16 The charge voltage to the network is kept constant as long as the trigger is active. The high voltage is discharged internally when the trigger is reset. If no discharge occurs when set for an air-discharge and the trigger is active, the processor waits for about 30 s then autonomously resets the trigger and discharges the network internally with simultaneous acoustic warning.
  • Page 17 4.2 System components The basic ESD simulator set NSG 437 includes: Pistol Base station Discharge network 150 pF / 330 Ω / IEC / EN 61000-4-2 (2001) 1 test finger for air-discharges 1 test finger for contact-discharges Power supply unit Operating instructions Certificate of calibration This set contains all the items necessary under normal conditions to conduct...
  • Page 18 4.2.3 Discharge networks The basic set contains a discharge network and test fingers for conducting tests that conform to IEC / EN 61000-4-2 and ISO 10605 standards. Alternative networks can be installed for testing in accordance with other standards. Several networks are given in the order list. The C and R values of the discharge network can also be specified for other applications.
  • Page 19 4.2.4 Measurement adapters The measurement adapter type MD 101 as per IEC / EN 61000-4-2 (2001) serves to verify pulse amplitudes and pulse shapes. It is designed for mounting in the side wall of a Faraday cage in which an oscilloscope has been installed. This measurement adapter has the flat impedance curve to well over 1 GHz that is necessary for the purpose.
  • Page 20 5 COMMISSIONING Immediately upon receipt, check the instrument and the accessories for com- pleteness and look for any transport damage. Damage incurred in transit must be reported to the transportation undertaking without delay. Before putting the instrument into operation: Study the manual Take the necessary safety precautions Connect the earth cable correctly (NSG 437 must never be switched on without a solid earth connection being made)
  • Page 21 High voltage generation is activated by pushing the trigger button and keeping it depressed. By bringing the test finger close to the earthing point an arc discharge occurs which is acknowledged acoustically and the display shows the preset discharge voltage in a frame.
  • Page 22 6 OPERATION This section of the manual provides a guide through the numerous operating possibilities of the NSG 437. The operation hierarchically arranged, is therefore easy to remember. The display shows unmistakable information about the parameters that have been set and the operating status of the simulator. Equally, the instrument refuses to accept any invalid entries.
  • Page 23 The instrument is ready for use immediately after self-test and calibration pro- cedures have been completed. High voltage generation is activated by pressing and holding the trigger button. The active high voltage state is indicated on the base station by a blinking red LED. Should a parameter need changing the operator has only to press on the rel- evant field in order to call up the appropriate menu.
  • Page 24 6.2.1 Display Numerical values (voltage, preset counter, repetition times) can be entered just the same as with a pocket calculator. Selection functions (such as language, type of discharge, program number, etc.) are handled by up / down buttons to scroll through the settings. 6.2.2 Voltage Touching the voltage indication brings you to the submenu for adjusting the discharge voltage.
  • Page 25 To use the continous operation mode the preset counter has to be switched off and the number has to be 0. - - - - means continuous operation without any preset counter function. Pressing the trigger button starts the generator operating;...
  • Page 26 6.2.5 Repetition The repetition button brings you into the menu to select either single pulses or a repetition rate from 0.5 to 25 Hz in air-discharge, or from 0.5 to 20 Hz in contact-discharge mode. 6.3 Settings This further branches into a range of submenus, thus: 6.3.1 Language Touch the button and choose the language you wish.
  • Page 27 6.3.4 Threshold This function permits to switch the threshold to "normal" or "off". Normal: Arcing is detected and is indicated by the kV symbol on the display blinking provided 20% (or more) of the charge voltage is dissi- pated. Off: This means in contact-discharge mode, the arcing detection is disregarded and the counter counts up / down as per settings in the repetition or counter menu respectively.
  • Page 28 6.3.6 Continuous operation Continuous operation can be established to produce a repetitive stream of discharges. Pushing the trigger button starts the continuous operation; pressing it again stops the operation. Continuous operation should only be utilized in cases of real necessity since every ESD radiates electro- magnetic disturbance the effect of which on the environment must be taken into consideration.
  • Page 29 7 TEST PROCEDURES Test standards, such as IEC / EN 61000-4-2 (2001) for example, give detailed information about the assembly of the test rig, the associated organization, the EUT itself and the documentation. 7.1 Standard-compliant procedures The ESD simulator system type NSG 437 is constructed in accordance with the requirements called for in the standard and is calibrated in a standard-conform manner.
  • Page 30 The contact-discharge method is to be preferred over the air-discharge method. The former must, however, be arranged so that true metal-to-metal contact with the EUT is achieved. Repetitive discharges are only of real use to quickly localize weak spots in construction or to pin-point critical situations in program routines.
  • Page 31 8 VERIFICATION OF THE PULSE DATA The calibration and verifi cation of the pulse data requires a specialist test and measurement laboratory for which the IEC standard sets out certain minimal requirements. Teseq uses the following instruments for calibration purposes: Oscilloscope with an analogue bandwidth of min.
  • Page 32 9 TYPICAL PULSE DATA 1 ns / div. 20 ns / div. Contact-discharge 8 kV Contact-discharge 8 kV pulse rising (t ca. 0.8 ns) current at 30 ns and 60 ns Reference fi gure quoted in IEC / EN 61000-4-2 (2001) 100% I at 30 ns I at 60 ns...
  • Page 33 MAINTENANCE Care The housing can be cleaned with a moist cloth with possibly just a trace of detergent liquid. Industrial spirit is also a suitable cleaning agent. Other solvents are not permitted. Fuses The instrument contains no fuses that are accessible to the user. 10.1 Calibration Trimming procedures in the NSG 437 are carried out digitally and automatically.
  • Page 34 Check the voltage level under the following conditions: Air-discharge Single-discharge Polarity: positive and negative Voltage settings: 2, 4, 8, 15 and 30 kV Permissible tolerance < ± 5% of set value Check the discharge current and pulse form as follows: Contact-discharge Single-discharge Polarity: positive and negative...
  • Page 35 10.2.1 Reduction of the pulse repetition rate through higher capacity The maximum achievable pulse repetition rate can suffer as a result of using special discharge networks having a higher capacity. No other limiting effects occur, however. 10.3 Repairs Repair work is to be carried out exclusively by an authorized Teseq repair department.
  • Page 36 10.4 NSG 437 system error messages Text Explanation Action HV SUPPLY The HV cannot be HV voltage module has detected TIMEOUT loaded in the specified during measurement an uncertain- time. ty. Switch off the base station wait for 10 s, switch on again. HV SUPPLY Unit stops after 30 s Press return on screen.
  • Page 37 VOLTAGE TOO The selected value is Reduce the voltage level. HIGH too high. HV TRAFO TOO NTC resistor too hot Power off the NSG 437 and wait after endurance runs. about 1h. 10.5 Disposal The following list shows the principal materials used in the construction of the NSG 437.
  • Page 38 10.6 Declaration of conformity CE NSG 437 ESD simulator...
  • Page 39 TECHNICAL SPECIFICATIONS Description Compact ESD simulator with microprocessor-based, large touch-sensitive LCD panel, built-in HV relay for contact-discharge, mains operation Basic set Package with: Discharge pistol High voltage base unit Mains power supply adapter (100 to 250 VAC) Discharge network 150 pF / 330 Ω Air- and contact-discharge tips Grounding cable User manual...
  • Page 40 Discharge tips Ball and point as per IEC and specials; exchanged by threaded cap Charging voltage kV, accuracy better than ±5% (stabilized) measurement Discharge Indicated by the kV symbol being displayed in inverse, detection (air- also acoustically in the "Single" operating mode. discharge only) Threshold level on / off Holding time...
  • Page 41 ESD STANDARDS The IEC / EN 61000-4-2 standard can be taken as a working basis. This has been renamed from IEC 801-2, 1991 into IEC 1000-4-2 as well as IEC / EN 61000-4-2 (2001) and will be accepted into national standards as part of the European harmonization.
  • Page 42 WARRANTY Teseq grants a warranty of 2 years on this instrument, effective from the date of purchase. During this period, any defective component part will be repaired or replaced free of charge or, if necessary, the instrument will be replaced by another of equivalent value.
  • Page 43 ACCESSORIES NSG 437 Basic set (see technical specifi cations) Accessories NSG 437 Part number Discharge network ISO 10605, 150 pF / 2 kΩ INA 4381 Discharge network ISO 10605, 330 pF / 2 kΩ INA 4382 Discharge network ANSI C63.16, 150 pF / 330 Ω INA 4383 Discharge network ANSI C63.16, 150 pF / 75 Ω...
  • Page 44 Headquarters Manufacturer Teseq AG Teseq AG 4542 Luterbach, Switzerland 4542 Luterbach, Switzerland T + 41 32 681 40 40 T + 41 32 681 40 40 F + 41 32 681 40 48 F + 41 32 681 40 48 sales @ teseq.com sales @ teseq.com www.teseq.com...