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NoiseKen INS-AX2 Series Instruction Manual

Impulse noise simulator
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INSTRUCTION MANUAL
IMPULSE NOISE SIMULATOR
INS-AX2 Series
MODEL
N O I S E L A B O R A T O R Y C O. , L T D.
1 . 1 2 E d i t i o n
A E B 0 0 3 3 1 - 0 0 E - 0

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Summary of Contents for NoiseKen INS-AX2 Series

  • Page 1 INSTRUCTION MANUAL IMPULSE NOISE SIMULATOR INS-AX2 Series MODEL N O I S E L A B O R A T O R Y C O. , L T D. 1 . 1 2 E d i t i o n...
  • Page 2 NOTICE The contents of this booklet are subject to change without prior notice. No part of this booklet may be reproduced or transferred, in any form, for any purpose, without the permission of Noise Laboratory Co., Ltd. The contents of this booklet have been thoroughly checked. However, if a doubtful point, an error in writing or a missing is found, please contact us.

  • Page 3: Important Safety Precautions

    1 IMPORTANT SAFETY PRECAUTIONS The following is very important matters in order to safely handle this product (called unit hereafter). Read carefully and strictly observe them. Any person who has an implanted pacemaker in the body should not operate this unit.
  • Page 4 Preface This manual contains important information pertaining to the operation and maintenance of your Impulse Noise Simulator Model INS-AX2 Series (hereinafter called INS-AX2). In order to obtain the highest performance from INS-AX2, it is recommended that the contents of this manual be thoroughly understood beforehand.

  • Page 5: Application Form For Instruction Manual

    2 APPLICATION FORM FOR INSTRUCTION MANUAL We place an order for an instruction manual. Model: Serial No.: Applicant: Company name: Address: Department: Person in charge: Tel No.: Fax No. Cut off this page “APPLICATION FORM FOR INSTRUCTION MANUAL” from this volume and keep it for future use with care.
  • Page 6 Mem orandum...

  • Page 7: Basic Safety Precautions

    3 BASIC SAFETY PRECAUTIONS Warning signs and their meanings Means a warning. The mentioned warning label is marked on the simulator, and shows the danger of an electric shock. This sign is shown at areas where high voltages potentially hazardous to human body are present.

  • Page 8: Basic Safety Precautions

    Basic Safety Precautions Any person who has an implanted pacemaker or other electric medical device in the body should not operate the simulator. Furthermore, such a person should not enter the test area while the simulator is operating. 【Precautions for human body and operation】...
  • Page 9 10. Be extremely careful of an electric shock due to the generated pulses and power supply to EUT.【Precautions for human body and connection】 11. High voltages exist inside the simulator. Never open the covers. 【Precautions for human body】 12. NOISE LABORATORY and its sales agents shall have no liability against any accident resulting in injury or death, any damage to equipment or any resultant damage thereof, which is caused by abuse or careless handling of the simulator.
  • Page 10 Noise Laboratory or its distributor/agent nearest to you. 【Precautions for human body and environments】 28. The coaxial connectors used for the simulator is of NoiseKen original design. Use of other type of connectors may cause electric shock hazards or malfunctions of the simulator.【Precautions for handling and safety】...

  • Page 11: When Warning Label Is Missing

    When warning label is missing: When warning label is lost, or peeled off or dirty, put up a new one for extra safety. When warning label is lost, contact to Noise Laboratory or its distributor/agent nearest to you.

  • Page 12: Table Of Contents

    4 TABLE OF CONTENTS IMPORT ANT SAFETY PRECAUT IONS ............. . 1 APPLICATION FORM FOR INSTRUCTION MANUAL .
  • Page 13 ENVIORONMENTS, INST ALLATION AND TEST METHOD ....... . 53 ..................53 10.1 EST PARAMET ERS ..............
  • Page 14 Memorandum...

  • Page 15: General Description

    5 GENERAL DESCRIPTION The simulator generates fast rise time square wave pulses and couples them to the power supply lines of the EUT for noise testing purpose. Features  Generates high voltage square pulses of less than 1ns rise time up to 4kV (INS-AX2 420 ( * ) /450/450 ( * ) *) or up to 2kV (INS-AX2 220 ( * ) /250/250 ( * ) *).

  • Page 16: Square Wave Pulse Generation Principle

    Square Wave Pulse Generation Principle The main components of the pulse generator circuitry of this simulator are HV power supply, coaxial cables, charging resistor, mercury relay and 50Ω terminating resistor. The coaxial cables form a distributed constant circuit consisting of the inductance of the inner conductor and capacitance of the inner conductor to the shield.
  • Page 17 INS-AX2-250/250 ( * ) */450/450 ( * ) * HV power supply Charging resistor CC： Coaxial cable HV： R1： RL2： Mercury relay R2： Terminating resistor(60Ω) R3： Terminating resistor(500Ω) Coupling capacitor Contactor U3： Triangular wave generating C1： RL1： part (***) R4：Terminating resistor for options (60Ω) L1/C2/R5, L2/C3/R6, L3/C4/R7, L4/C5/R8：Filter RL10：ON when the incorporated terminating resistor(60Ω) is connected.

  • Page 18: Relation Between Value Of Terminating Resistor, And Characteristic Impedance Of Coaxial Cable

    Relation between Value of Terminating Resistor, and Characteristic Impedance of Coaxial Cable Pulse waveforms shown in the following figure appear at both ends of the terminating resistor. To generate square wave pulses, this simulator adopts a 53.5Ω, equal value to the characteristic impedance of the coaxial cables as the resistance of the terminating resistor.

  • Page 19: Setting Range For Test Conditions

    Setting Range for Test Conditions This simulator is capable of conducting high-voltage pulse tests shown in the following table: Table 1. Setting range for pulse test conditions Parameters Specifications 0.01kV to 2kV (220 ( * ) /250/250 ( * ) *) at 0.01kV step Output voltage 0.01kV to 4kV (420 ( * ) /450/450 ( * ) *) at 0.01kV step Ramp, program setting possible...

  • Page 20: Standard Accessories

    6 STANDARD ACCESSORIES This product comes with the following standard accessories: A-1 (for 220 ( * ) /420 ( * ) ) *1 A-2 (for 250/250T/450/450T) *1 A-3 (for 250H/250TH/450H/450TH) *1 List of standard accessories Description Quantity Remarks Outlet panel (18-00067A) AC240V/DC65V20A max (220 ( * ) /420 ( * ) )

  • Page 21: Controls And Display Functions

    7 CONTROLS AND DISPLAY FUNCTIONS On the front of the simulator, control, setting and output sections are provided. On the rear, mains input terminals for the simulator and terminal block for EUT power supply are provided. INS-AX20-220/420 front panel INS-AX20-220/420 正 面 全 体 図 1.

  • Page 22: Front Panel Controls And Displays

    Front panel controls and displays Control panel (250/450) 8. △UP/▽DOWN Used to change set value. Changes values, such as pulse voltage, phase angle, repetition period and pulse width. Continuing to press UP/DOWN increases increment and decrement. 9. INJECTION Phase Setting button (Selector Switch of PULSE OUT Coaxial Connector) Used to select injection phase.
  • Page 23 14. LINE ON/OFF Setting button Used to turn ON/OFF EUT LINE. The button lamp is on with EUT LINE turned on. 15. POLARITY Setting button Used to select polarity of output pulse. 16. VOLTAGE Setting button (VOLTAGE Ramp Setting button) Used to select change of pulse voltage.

  • Page 24: Rear Panel

    Rear panel a. Inlet for AC INPUT AC mains input to operate this simulator. Input power-supply range is AC 100～240V. In case of AC100～120V operation, connect with supplied power cord for protective grounding. In case of AC220～240V operation, use 3-core power cord with protective earth terminal that conforms to national safety standard.

  • Page 25: Operation

    8 OPERATION Observe the IMPORTANT SAFETY PRECAUTIONS and BASIC SAFETY PRECAUTIONS when conducting a test by using this simulator. Turning ON and OFF power supply Connect the supplied power cord (standard accessory) to AC INPUT on the rear panel (In case of AC 100～120V). Connect a 3-core power cord with protective earth terminal conforming to national safety standard to AC INPUT (in case of AC220-240V).

  • Page 26: Setting The Pulse Voltage And Polarity

    Setting the pulse voltage and polarity Press VOLTAGE setting button so that voltage can be set. The VOLTAGE setting button and voltage indicator blink in the voltage setting state. Set voltage value with △ UP/ ▽ DOWN. Continuing to press UP/DOWN increases and decreases the value largely.
  • Page 27 The following test contents are available by a combination of the injection phase and return phase (signal ground of pulse). (HOT means an injection phase and RET shows a return phase.) Table of tests for 3-phase model (250/250 ( * ) */450/450 ( * ) *) Setting Test contents Ground plane reference potential...

  • Page 28: Connection Of Eut Line Input

    Connection of EUT LINE INPUT Before connecting the simulator to EUT power supply, interrupt power supply to EUT and turn off the POWER key of the simulator. The generated pulse voltage and power supply to EUT may cause an electric shock. Prepare a power cable that conforms to the national safety standard and meets EUT power capacity.

  • Page 29: Mounting And Dismounting Of Outlet Panel And Removal

    Mounting and Dismounting of Outlet Panel and Removal When mounting the outlet panel, check its direction and slowly insert it to the inner part. Check that the surface panel has stuck to the simulator, and then press both lock buttons. When dismounting, draw out the outlet panel slowly with both lock buttons released.

  • Page 30: Operation In Phase (Line Synchronization) Mode

    Operation in PHASE (LINE Synchronization) Mode In this mode, the simulator generates pulses synchronizing with the frequency of AC supply for the EUT. One pulse is generated every cycle. The simulator does not generate pulses when no power supply is connected to the EUT LINE INPUT terminal or power supply voltage is below AC90V or over 50/60Hz±10% or in case of DC input.
  • Page 31 When AC power supply is not supplied to EUT LINE INPUT (including a case where power voltage is below AC90V or over 50/60Hz±10%), or when LINE ON/OFF setting button (14) is OFF (the light is off), even if START button is pressed, an error is displayed and operation will not start.

  • Page 32: Operation In Variable Mode

    8.10 Operation in VARIABLE Mode In this mode, this simulator injects pulses at a certain period. The period can be set within a range of 10ms～999ms for 2kV model (220 ( * ) /250/250 ( * ) *), and 16ms～999ms for 4kV model (420 ( * ) /450/450 ( * ) *).

  • Page 33: Shot Mode

    8.11 Operation in 1 SHOT Mode In this mode, the simulator generates a single pulse for injection by manual operation. Lamp is on while 1 SHOT mode is selected. While lamp is on, 1 SHOT button serves as a trigger switch, and pulse is output for each trigger input. In case of PHASE mode, pulse is output in sync.

  • Page 34: Stopping The Simulator

    8.12 Stopping the Simulator Pressing the STOP switch stops pulse injection immediately, turning off the START button lamp and high voltage power lamp. When pulse injection is stopped, applying high voltage interrupts, too. Even if the simulator is in STOP state, EUT LINE is not internally disconnected.
  • Page 35 Error Nos. and messages are as follows. Display State Countermeasure Repair is required. Injection unit home detection Contact Noise Laboratory error distributor/agent closest to you. Repair is required. Injection unit Contact Noise Laboratory inserting/drawing error distributor/agent closest to you. Repair is required. Return unit error Contact Noise...

  • Page 36: Operation For Wide Applications

    9 OPERATION FOR WIDE APPLICATIONS VOLTAGE Ramp Setting The following 5 parameters should be set: Initial pulse voltage, end pulse voltage, step voltage, injection time, and interval time. Change set value with △UP/▽DOWN . 1） Press VOLTAGE setting button (16) for long time (about 2 seconds) to select the VOLTAGE ramp setting mode, and the above display appears.
  • Page 37 7） Upon completion of the above settings, the simulator is automatically set to VOLTAGE ramp mode, with the lamp of the VOLTAGE button (16) lighted. 8） To disable voltage ramp, press the VOLTAGE setting button (16) again. The button lamp will start blinking. 9）...

  • Page 38: Voltage Ramp Test Run

    VOLTAGE ramp Test Run The simulator starts injection from the initial voltage, slides by an amount of step voltage and executes injection up to the final voltage according to the settings of VOLTAGE ramp. 1） Enable voltage ramp. 2） Press START button (21). 3）...

  • Page 39: Variable Ramp Setting

    VARIABLE Ramp Setting The pulse repetition period can gradually be changed according to the settings. The following 5 parameters should be set: Initial repetition period, final repetition period, step interval, injection time and interval time. Change set value with △UP/▽DOWN. 1）...
  • Page 40 6） Set interval time "v-5" in increments of 1 second, and finalize with PHASE/VARIABLE setting button (18). When selecting the manual change with START button, select the following "ooo" display. When selecting the continuous change without setting an interval, select the following "Cnt" display. 7）...

  • Page 41: Variable Ramp Test Run

    VARIABLE Ramp Test Run The simulator starts injection from the initial period, slides the repetition period by an amount of step period and executes injection up to the final period according to the settings of VARIABLE ramp. 1） Enable VARIABLE ramp. 2）...

  • Page 42: Phase Ramp Setting

    PHASE Ramp Setting The phase injection angle can gradually be changed according to the settings. The following 5 parameters should be set: Initial phase angle, final phase angle, step phase angle, injection time and interval time Change set value with △UP/▽DOWN. 1）...
  • Page 43 6） Set injection time "P-5" in increments of 1 second and finalize with PHASE/VARIABLE setting button (18). Select the "ooo" display, when making it the manual change by a START button. When selecting the continuous change without setting an interval, select the following "Cnt" display. 7）...

  • Page 44: Phase Ramp Test Run

    PHASE Ramp Test Run The simulator starts injection from the initial phase angle, slides by an amount of step phase angle and executes pulse injection up to the final phase angle according to the settings of PHASE ramp. 1） Enable Phase ramp. 2）...
  • Page 45 When AC power supply is not supplied to EUT LINE INPUT (including a case where power voltage is below AC90V or over 50/60Hz±10%), or when LINE ON/OFF setting button (14) is OFF (the light is off), even if START button is pressed, an error is displayed and operation will not start.

  • Page 46: Combined Ramp Mode

    Combined ramp mode Combinations of VOLTAGE ramp with VARIABLE ramp and with PHASE ramp are available. In either combination mode, the simulator executes ramp according to the specified order. Example of combined ramps  VOLTAGE ramp is set from 1.00kV to 2.00kV at 0.25kV step, and PHASE ramp is set from 0°...

  • Page 47: Program Mode Setting

    Program Mode Setting When the program mode is used, sequential execution of up to 20 kinds (1-20) of injection settings can be carried out. Injection phase, return phase, pulse voltage, polarity, pulse width, injection interval (phase angle), and the state of EUT LINE can be set for each program.
  • Page 48 5） With pulse injection time ( ① ) selecting status, press EXECUTE TIME/INTERVAL TIME setting button (20) again to set interval time (② ). Set injection time by △UP/▽DOWN as 1~9999 seconds, manual change ("ooo") or comtinuous change (“Cnt”).. 6） With program number (④) selecting status, press PROGRAM No./LINE STATE setting button (19) again to set EUT LINE ON/OFF status (③).
  • Page 49 4) With program number (④) selecting status, press PROGRAM No./LINE STATE setting button (19) again to set EUT LINE ON/OFF status (③). Set EUT line status by △UP/▽DOWN. ③ ④ 5) Press PROGRAM No./LINE STATE setting button (19). With program number (④) selecting status, select a program number by △UP/▽DOWN to set a program.

  • Page 50: Program Test Run

    9.10 Program Test Run Sequential execution of the set program is run from 1. The programs to be run are programs for which pulse injection time is specified and programs for which ramp is enabled. The programs for which both of these parameters are not specified are not to be run. 1）...

  • Page 51: Setting And Reference Of Termination Resistance

    9.11 Setting and Reference of Termination Resistance The intial settting of termination resistance is set as resistance of the pulse output to EUT line on outlet panel (built-in termination resistance: 53.5Ω). Since the set value of termination resistance is initialized to 53.5Ω(built-in termination resistance) each time power is turned on, set the value each time if necessary.

  • Page 52: How To Set Termination Resistance Value

    9.11.1 How to set termination resistance value 1） Press PAUSE button for long time (2 seconds) with no pulse injected in STOP status, and the present termination resistance value is displayed on the 3rd line. (It returns to a usual display 3 seconds later.) 2）...

  • Page 53: Maximum Pulse Voltage At Each Termination Resistance

    9.11.2 Maximum pulse voltage at each termination resistance The maximum pulse voltage at each termination resistance is as follows. 53.5Ω 50.0Ω***1) 60.0Ω***2) Model name OPEN termination termination termination 220 ( * ) /250/250 ( * ) * 2.05kV 1.98kV 4.00kV 2.05kV 420 ( * ) /450/450 ( * ) * 4.10kV...

  • Page 54: How To Use Eut Fail Input

    9.12 How to Use EUT FAIL INPUT EUT FAIL INPUT on the rear panel has the function of stopping the test by voltage input of DC 5～15V with the 50ms duration. However, EUT LINE OFF is not automatically done. Turn off manually as required. Example of use: When voltage is input to EUT FAIL INPUT terminal with malfunction of EUT detected, operation stops at pulse injection setting at that time.

  • Page 55: Envioronments, Installation And Test Method

    10 ENVIORONMENTS, INSTALLATION AND TEST METHOD 10.1 Test parameters The following test parameters are to be considered and evaluated.  Noise coupling mode (Next clause)  Pulse polarity  Evaluation of "Malfunction pulse voltage" test against "Pulse width"  Evaluation of "Malfunction high-voltage pulse" test against "Pulse repetition period"...

  • Page 56: Test Environments

    10.3 Test Environments A recommended test environment is shown here. It consists of the following:  Wooden test table  Ground plane and ground connecting cable  Power supply for the simulator  Power supply for the EUT and an isolation transformer (AC powered testing) ...

  • Page 57: Test Set-Up

    10.4 Test set-up 10.4.1 Line to ground mode for AC operated equipment (Common Mode) Example of single-phase model (220 type/ 420 type) INS-AX2 PULSE 50 Ω TERM LINE OUT LINE IN EUT L1 EUT L1 EUT L2 EUT L2 AC IN EUT PE EUT PE C1 C2 C3...

  • Page 58: Line To Line Mode (Normal Mode) For Ac Operated Equipment

    10.4.2 Line to line mode (normal mode) for AC operated equipment INS-AX2 PULSE LINE IN 50ΩTERM LINE OUT EUT L1 EUT L1 EUT L2 EUT L2 EUT L3 EUT L3 AC IN EUT N EUT N GROUND PLANE ISOLATION TRANSFOMER Example of 3-phase model (250 type / 450 type) 〔Key points〕...

  • Page 59: Line To Ground Mode (Common Mode) For Dc Operated Equipment

    10.4.3 Line to ground mode (common mode) for DC operated equipment PULSE 50ΩTERM LINE IN LINE OUT EUT L1 EUT L1 EUT L2 EUT L2 DC IN GROUND PLANE DC POWER (Part of the above-mentioned circuit is omitted) 〔Key points〕 1) Turn off power to EUT.

  • Page 60: Line To Line Mode (Normal Mode) For Dc Operated Equipment

    10.4.4 Line to line mode (normal mode) for DC operated equipment PULSE 50ΩTERM LINE IN LINE OUT EUT L1 EUT L1 EUT L2 EUT L2 DC IN GROUND PLANE DC POWER (Part of the above-mentioned circuit is omitted) 〔Key points〕 1) Turn off power to EUT.

  • Page 61: Capacitive Coupling Test For Signal Lines (By Using Ca-805B Coupling Adapter: Option)

    10.4.5 Capacitive coupling test for signal lines (by using CA-805B coupling adapter: Option) INS-AX2 PULSE OUT TERM CONNECTOUT 50ΩTERM LINE IN LINE OUT EUT L1 EUT L1 EUT 2 EUT 1 EUT L2 EUT L2 SIGNAL CA-805B SIGNAL GROUND PLANE (Part of the above-mentioned circuit is omitted) 〔Key points〕...

  • Page 62: Test By Using A Radiation Probe (Optional Accessory)

    10.4.6 Test by using a radiation probe (optional accessory) INS-AX2 PULSE OUT 50 Ω TERM LINE IN LINE OUT RADIATION PROBE EUT L1 EUT L1 EUT L2 EUT L2 C1 C2 GROUND PLANE (Part of the above-mentioned circuit is omitted) ［Key points］...

  • Page 63: Specifications And Functions

    3-phase AC300V/DC65V, 50A (250 ( * ) /450 ( * ) ) Maximum power 3-phase AC500V/DC250V, 50A(250 ( * ) */450 ( * ) *) capacity of EUT 50/60Hz±10% HV Coaxial connector NMHV Noiseken original Power supply AC100-240V±10% 50Hz/60Hz±10% Power consumption 110VA Operating 15-35°C...
  • Page 64 Coaxial cable and high-voltage coaxial connector The high-voltage coaxial cable (incorporated in the simulator) and high-voltage coaxial connector (external) are consumable supplies. Check the high-voltage coaxial cable and high-voltage coaxial connector with an insulation-resistance tester every half-year or when they are used for about 200 hours.

  • Page 65: How To Check The Waveform

    12 HOW TO CHECK THE WAVEFORM The bandwidth of an oscilloscope used for this purpose shall be at least 100MHz, as instrumentation with less than 100MHz may lack brightness. Since an ordinary probe has a limited withstand voltage of 400V or so, it may be damaged depending on the output voltage from this unit.
  • Page 66 100% tr: Rise time Pw: Pulse width Notice When checking the waveform injected on AC line, connect an appropriate HV probe conforming to the output voltage to the Outlet panel terminals at the shortest possible length. In this case, fully be careful not to receive an electric shock. In case of measurement with a high voltage-proof probe, the 50Ω...

  • Page 67: Correcting Phase Angle

    13 CORRECTING PHASE ANGLE Pulse generation timing varies depending on the characteristic of each relay (having individual difference) and pulse voltages. Therefore, a large phase-angle setting error occurs after the relay is changed. In order to correct the phase-angle setting error, set the correction value in accordance with the following procedure: As the phase angle has been corrected at AC50Hz at the time of shipment, some errors may be found at AC60Hz.

  • Page 68: Explanation Of Phase-Angle Correction Setting

    2) Setting INS  Input 50Hz or 60Hz to EUT INPUT at Sin wave within the rated voltage by AC regulated power supply etc. through an isolation transformer.  Connect HV probe to the output terminal on the outlet panel (HOT-L1, GND-L2).
  • Page 69 4） Adjust the phase angle set value by means of △ UP/ ▽ DOWN so that the phase-angle setting errors of the upper side and the lower side against the ground level are almost same on the oscilloscope reading at 0.10kV and maximum voltage (2.05kV for 220 type/250 type and 4.10kV for 420 type /450 type).
  • Page 70 6） The settings change automatically to VOLTAGE: 0.10kV and PHASE: 360. △ UP / ▽ D O WN Adjust PHASE value by means of △UP/▽DOWN so that the injection phase angle gets to the position of 0° (the ground level on the oscilloscope screen). (Adjustable range of PHASE value: 360~330DEG) The figure as below shows the waveform which is set on the position that the injection phase angle is 0°...
  • Page 71 8） The settings changes automatically to VOLTAGE: 0.10kV, PHASE: 0, and VOLTAGE setting button: blinking. △ UP / ▽ D O WN Adjust VOLTAGE value by means of △UP/▽DOWN so that the injection phase angle gets to the position of 0° (the ground level on the oscilloscope screen). The figure as below shows the waveform which is set on the position that the injection phase angle is 0°...
  • Page 72 An example of display of INS-AX2-420 type or 450 type after 9) procedure 10） Make VOLATAGE value maximum (2.05kV for 220 type/250 type and 4.10kV for 420 type /450 type) by means of △UP. △ UP / ▽ D O WN When VOLTAGE gets to the maximum value, PHASE setting button (18) starts blinking automatically.
  • Page 73 11） Adjust PHASE value by means of △UP/▽DOWN so that the injection phase angle gets to the position of 0° (the ground level on the oscilloscope screen). (Adjustable range of PHASE value: 0~30DEG) The figure as below shows the waveform which is set on the position that the injection phase angle is 0°...

  • Page 74: Simplified Chart Of Phase-Angle Correction Setting

    13.4 Simplified Chart of Phase-Angle Correction Setting Set the vertical section 10V/Div., the horizontal section Setting the oscilloscope 40ns/Div., and the trigger level 30V. Position the ground level at the center of the screen. Set INJECTION phase: L1, RETURN phase: L2, Pulse Setting INS width: 1000ns, VOLTAGE: 0.10kV, and PHASE: 0 DEG.

  • Page 75: Relay Unit

    14 RELAY UNIT This product uses a mercury relay for pulse generation. Mercury relays are consumable supplies and the service life varies according to operating conditions. Especially when it is used at 8kV maximum without using a termination resistance, the relay life may sometimes extremely shorten.
  • Page 76 CAUTION: As mercury is used in the mercury relay unit, it falls under the category of industrial waste and its disposal is contracted to a waste handler. Therefore, It is not permitted that the user disposes of it as ordinary waste. When disposing of the used mercury relay unit, perform waste treatment in accordance with the regulations of each country or return it to Noise Laboratory or its distributor/agent closest to you.

  • Page 77: Warranty

    15 WARRANTY Servicing terms The following terms are applicable to servicing by Noise Laboratory Co., Ltd., (hereafter referred to as the Company) provided to maintain the intended performance of its products. 1. Scope The following terms shall apply only to products made by the Company. 2.
  • Page 78 Limited warranty Noise Laboratory Co., Ltd. (hereafter referred to as the Company) warrants its products to be free from defects in materials and workmanship under normal use and service for a period of one year from date of delivery. In the event of failure of a product covered by this warranty, the Company will repair the product or may, at its option, replace it in lieu of repair without charge.

  • Page 79: Maintenance

    16 MAINTENANCE When repair, maintenance or internal adjustment of the unit is required, a qualified service engineer takes charge of such work. Maintenance on the user side is restricted to the outside cleaning and functional check of the unit. When checking or replacing the fuse, turn off the switch of the unit and disconnect the plug socket beforehand.

  • Page 80: Noise Laboratory Support Network

    17 NOISE LABORATORY SUPPORT NETWORK  If a symptom that seems a trouble is found, check the symptom against the following check sheet and inform the model name and serial Number of the product together with the symptom to Noise Laboratory or its distributor/agent closest to you. ...
  • Page 82 NOISE LABORATORY CO., LTD. 1-4-4, Chiyoda, Chuo-ku, Sagamihara City, Kanagawa Pref., 252-0237, Japan TEL: +81-(0)42-712-2051 FAX: +81-(0)42-712-2050 URL: http://www.noiseken.co.jp Printed in Japan...

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