NoiseKen SWCS-931SD User manual

INSTRUCTION MANUAL
DAMPED-OSCILLATORY WAVE SIMULATOR
SWCS-931SD
NOISE LABORATORY CO., LTD.
1.11 edition
AEH00005-00E-0L

NOTICE
• The contents of this instruction manual are subject to change without prior
notice.
• No part of this instruction manual may be reproduced or distributed, in any form
or by any means, without the authorization of Noise Laboratory Co., Ltd.
• The contents of this instruction manual have been thoroughly examined.
However, if you find any problems, misprints, or missing information, please feel
free to contact our sales agent who you purchased our product from.
• Noise Laboratory Co., Ltd. assumes no responsibility for any loss or damage
resulting from improper usage, failure to follow this instruction manual, or any
repair or modifications of this product undertaken by a third party other than
Noise Laboratory Co., Ltd. or its authorized person.
• Noise Laboratory Co., Ltd. assumes no responsibility for any loss or damage
resulting from remodeling or conversion solely undertaken by the user.
• Please note that Noise Laboratory Co., Ltd. cannot be held responsible for any
consequences arising from the use of this product.

1
1. IMPORTANT SAFETY PRECAUTIONS
The following instructions are very important for safe handling of the Damped-oscillatory
wave simulator SWCS-931SD (hereinafter “the Unit”).
They must be kept strictly to prevent users of the Unit from receiving harm or damage through
using the Unit.
Read them carefully before use.
 The Unit may not be used by people fitted with electronic medical
devices such as pacemakers and such people may not enter the
testing site while the instrument is operating.
Failure to follow this rule risks death or serious injury.
The Unit may not be used in a location where fire is prohibited or
there is a risk of explosion.
Failure to follow this rule risks igniting a fire due to an electrical discharge.
 The Unit may only be used by trained EMC technicians (electrical
technicians).
There is a risk of death or serious injury, and of the emission of
electromagnetic noise that exceeds the stipulated limits. Use the Unit in
conjunction with appropriate measures for dealing with electromagnetic noise
such as a Faraday cage or shielded room.
Do not use the Unit for any purposes other than the EMC testing
purposes described in this instruction manual.
Failure to follow this rule risks death or serious injury.
Use an AC power cable that is certified for use under the safety
rules of the country in which the Unit is being used.
Failure to follow this rule risks fire or electric shock. The supplied AC power
cable is intended for Japan and North America. If the Unit is used in a
country other than these, use a cable that is certified for use under the safety
rules of that country.
Before setting up the test site, connecting the equipment, or starting
testing, please read the Chapter entitled "Basic Safety Precautions"
which contains additional safety advice.

2
Memorandum

3
2. APPLICATION FORM FOR INSTRUCTION MANUAL
To:Noise Laboratory Co., Ltd.
We place an order for an instruction manual.
Model: SWCS-931SD
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.
When an INSTRUCTION MANUAL is required, fill in the above Application Form
and mail or fax it to the following sales department of our company.
To: Noise Laboratory Co., Ltd.
1-4-4 Chiyoda Chuo-ku,Sagamihara City,
Kanagawa Pref., 252-0237 Japan
Tel: [phone] Fax: [phone]
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4
Memorandum

5
1. IMPORTANT SAFETY PRECAUTIONS ······················································· 1
2. APPLICATION FORM FOR INSTRUCTION MANUAL····································· 3
3. TABLE OF CONTENTS ············································································ 5
4. PREFACE ······························································································ 6
5. BASIC SAFETY PRECAUTIONS································································ 8
5-1. Warning signs and their meanings··························································· 8
5-2. Basic safety precautions········································································ 8
6. NAME AND FUNCTION OF EACH PART OF THIS UNIT ······························· 12
7. ACCESSORIES······················································································ 15
8. OPERATION·························································································· 16
8-1. Preparation························································································ 16
8-2. Connections and settings······································································ 16
8-2-1. Connections and surge polarity setting················································ 16
8-2-2. Test duration setting········································································ 16
8-2-3. Surge repetition frequency setting······················································ 17
8-2-4. Output impedance setting································································· 17
8-2-5. Coupling capacitance setting····························································· 18
8-2-6. Surge voltage setting······································································· 18
8-3. Execution of test················································································· 18
8-4. Surge waveform verification ·································································· 19
8-4-1. Equipment preparation····································································· 19
8-4-2. Connection ···················································································· 19
8-4-3. Measurements················································································ 19
9. TECHNICAL SPECIFICATIONS ································································ 20
9-1. Specifications····················································································· 20
9-2. Block diagram ···················································································· 21
10. WARRANTY·························································································· 22
11. MAINTENANCE ····················································································· 24
12. NOISE LABORATORY SUPPORT NETWORK ············································ 25
3. TABLE OF CONTENTS

6
We thank you very much for buying SWCS-931SD. his Instruction Manual contains
important information on the function, operating procedure and operating precautions of your
SWCS-931SD unit.
In order to obtain the maximum performance of your unit, thoroughly read this Instruction
Manual and use it as ready reference for operation.
This manual is designed to help intended users who can comply with
the given safety precautions and operating procedures to operate and
utilize this product safely.
Keep this Instruction Manual in a readily accessible place.
Features
 his unit generates a defined damped oscillatory waveform over a range of 100V to 1500V
and applies it to the equipment and device under test to check for its surge withstand
capability.
 A semiconductor switch is employed, offering more reliability and energy-saving feature
than conventional unit with a mechanical switch.
 A wide range of repetition over 0.4Hz to 400Hz.
 Push button selection for output impedance and coupling capacitance from 50 Ω to 200 Ω
a step of 10 Ω and 0 (short), 470pF and 100pF, respectively. his feature eliminates the
need for the operator to touch “HO ” line, offering easy and safe operation.
4. PREFACE

7
Memorandum

8
5. BASIC SAFETY PRECAUTIONS
5-1．Warning signs and their meanings
Means a warning.
If such a danger is not avoided, a potential danger
which may result in a death or serious injury will be
caused.
Means a caution.
If such a danger is not avoided, a potential danger
which may result in a minor or medium degree of
injury will be caused.
5-2．Basic safety precautions
1. Any person who has an implanted pacemaker in the body should not operate
this unit. Furthermore, such a person should not enter the test area while
this unit is operating. Non-compliance may present a harmful effect due to
malfunction of the medical device caused by interference.
【
【【
【Precautions for human body and operation】
】】
】
2. Use of this unit in an explosive area such as "No fire" area etc. is prohibited.
If used in such an area, it is liable to cause combustion or ignition due to
discharge.
【
【【
【Precautions for human body and environments】
】】
】
3. This unit generates high voltages (1500V maximum). So be extremely careful
in handling it. Mishandling and careless operation of this unit will result in a
deadly injury.
【
【【
【Precautions for human body, operation, environment and connection】
】】
】
4. Test rig used in conjunction with this unit should be insulated against a
minimum voltage of 1500V. Insufficient withstand voltage may lead to shock
hazards, ground leak current or fire.
【
【【
【Precautions for human body, operation and environments】
】】
】
5. When connecting to and setting for accessories, options and other equipment
for tests, press STOP button of this unit beforehand and check to see that
SURGE OUT lamp is off and the output VOLT meter reads 0V. Otherwise an
electric shock due to high voltage may be caused.
【
【【
【Precautions for connection】
】】
】
WARNING 警告
WARNING 警告

5.BASIC SAFETY PRECAUTIONS
9
6. Be extremely careful of an electric shock due to the generated surges.
【
【【
【Precautions for human body and operation】
】】
】
7. As high voltages are generated in the unit, do not open the cover of this unit.
Touching inside the unit may cause an electric shock hazard.
【
【【
【Precautions for human body】
】】
】
8. 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
this unit.
【
【【
【Precautions for human body, operation, environments and connection】
】】
】
9. While the unit is operating, never keep your eyes off the unit. When leaving
the unit, be sure to press the STOP button beforehand and check to see that
SURGE OUT lamp is off. Otherwise, a third person or equipment related to
the test may be put in danger.
【
【【
【Precautions for human body, operation and environments】
】】
】
10. Do not connect a cable etc. to any terminal that is not required for test set-up.
Be careful not to make a misconnection. Otherwise, you may receive an
electric shock due to high voltage or the inside of the unit and connected
equipment may be damaged.
【
【【
【Precautions for human body, operation and connection】
】】
】
11. For AC supply connection, be sure to use the supplied AC input cable in order
to connect the PE terminal of the AC inlet of this unit to the safety ground. In
case of not using the PE terminal, be sure to use the earth terminal beneath
the AC inlet.
【
【【
【Precautions for human body and connection】
】】
】
12. Connect each connector and cable without fail. Otherwise, you may receive
an electric shock due to high voltage or the inside of the unit and connected
equipment may be damaged.
【
【【
【Precautions for human body and connection】
】】
】
13. Never use damaged connector or cable. Otherwise, you may receive an
electric shock due to high voltage or the inside of the unit and connected
equipment may be damaged.
【
【【
【Precautions for human body and connection】
】】
】
14. To ensure safety in operation, use the accessories and optional equipment
supplied by our company. Use of others may degrade the safety and
performance of this unit.
【
【【
【Precautions for human body and connection】
】】
】
WARNING 警告

5.BASIC SAFETY PRECAUTIONS
10
15. The AC INPUT (AC inlet) terminals on the rear panel has a terminal for safety
grounding connection. The GND terminal on the front panel is the signal
ground terminal for the surge generator circuitry. For connection details, refer
to “7. Operation”.
【
【【
【Precautions for connection】
】】
】
16. Place the unit in a stable place, otherwise, it may fall and result in injury to
operators and others.
【
【【
【Precaution for humans and environments】
】】
】
17. Never use this unit for other purpose than surge testing. 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 that is caused by abuse or careless handling of this unit.
【
【【
【Precautions for human body, operation, environments and connection】
】】
】
18. During test, high level of electromagnetic radiation may be generated
depending on the type or nature of the EUT/DUT and thus causing interference
with nearby electronic equipment and radio communication equipment. In
such case, the user may have to take measures such as a faraday cage,
shielded room, shielded cable and so on.
【
【【
【Precaution for environments】
】】
】
19. When connecting to and setting for accessories, options and other equipment
for tests, turn off the unit power beforehand. Otherwise an electric shock due
to high voltage may be caused.
【
【【
【Precautions for connection】
】】
】
20. Do not drop the unit or do not give strong shock to the unit. Do not put heavy
object or sit down on this unit. When installing the unit, do not block the vent.
Care should be taken not to put a foreign body or water into inside the unit
through the vent, otherwise, the unit may be damaged.
【
【【
【Precaution for environments】
】】
】
21. The voltage rating for AC supply for this unit is shown on the inlet on the rear
panel. Use this unit within the range of ±
±±
±10% of the rating. Do not apply
voltage exceeding this rated voltage, otherwise, the unit may be damaged.
【
【【
【Precautions for connection】
】】
】
22. Do not use nor keep the unit in a hot or cold environment, otherwise, the unit
may be damaged or only exhibit limited performance.
(Operating temperature range: 15
℃
℃℃
℃ ～
～～
～35 ℃
℃℃
℃ )
【
【【
【Precaution for environments】
】】
】
WARNING 警告

5.BASIC SAFETY PRECAUTIONS
11
23. If condensation is found, fully dry the unit before operating it, otherwise, the
unit may be damaged or only exhibit limited performance.
【
【【
【Precautions for environments】
】】
】
24. Avoid using this unit in a humid or dusty place, otherwise, the unit may be
damaged or only exhibit limited performance.
(Operating humidity range: 25 ～
～～
～75%)
【
【【
【Precautions for environments】
】】
】
25. Only authorities personnel can carry out repair or adjustment work on the
internal circuit. Non-authorized personally servicing may lead to a degraded
performance of this unit.
26. Do not wipe this unit with thinner, alcohol or similar solvent. When the body
is dirty, soak a cloth in detergent, squeeze the cloth and wipe the body with it.

12
6. NAME AND FUNCTION OF EACH PART OF THIS UNIT
【 Front panel 】
UP
×１ sec
PW
POWER
SURGE OUT
SURGE PERIOD
CONTINUE
VOLT.ADJ
MAXMIN
STOP
START
4 40 400
REPETITION
RATIO (Hz)
0.1 1
470pF
100pF
TIMER
SWCS-931SD
V
WARNING
GNDHOT HOT
+ 10Ω ２０Ω ４０Ω ８０Ω ５０Ω
×１０ min
⑫ ⑬ ⑭ ①⑪⑩
③
②
④⑤⑥⑦⑧⑨
① POWER switch ： Controls the mains power input to the unit. his switch pressed to the
vertical bar position places this unit in the ON status.
② S AR switch ： Press this button to start surge generation. “⑩ SURGE OU lamp ” is on
when the unit generates surges.
③ S OP switch ： Press this button to stop the test. When this button is pressed, “⑩ SURGE
OU lamp ” turns off.
④ REPE I ION RA IO controls ： Push buttons and rotary knob to control the repetition
frequency of the surges. he push-buttons select 4, 40 or 400Hz and the knob provides a
multiplication from 0.1 to 1. In combination, repetition frequency from 0.4Hz to 400Hz is
available.
⑤ VOL ADJ knob ： Controls the peak amplitude of the surge. Adjustment from 0V to 1500V
is available. (the waveform specifications are assured only over a range of 100V to 1500V)
⑥ Surge Voltmeter ： Indicates the peak amplitude of the surge.

13
⑦ CON INUE lamp ： Alight while selecting CON INUE mode. In this mode, pressing “②
S AR switch ” makes the surge output start, and pressing “③ S OP switch ” makes the
surge output stop.
⑧ IMER/CON INUE mode select switch ： Switches the mode for how to output the surge,
IMER mode or CON INUE mode. If it is turned to “ IMER ” side, “⑨ IMER ” becomes
effective. If it is turned to “ CON INUE ” side, this unit works continuously.
⑨ IMER ： Sets the surge output period. It is effective when “⑧ IMER/CON INUE mode
select switch ” is turned to “ IMER ” side. In this mode, the surge output starts when “②
S AR switch ” is pressed and the surge output stops when output time reaches to the time
set by this timer. Pressing “③ S OP switch ” while outputting surge also makes the surge
output stop.
⑩ SURGE OU lamp ： Illuminates while the unit is generating surges.
⑪ HO － (negative) terminal ： Generates the negative polarity output reference to GND. For
this purpose, HO + (positive) terminal and “⑫ GND terminal ” shall be short-circuited by
the supplied short-bar.
⑫ GND terminal ： he signal ground of the generator circuitry, providing a potential
reference.
⑬ HO + (positive) terminal ： Generates the positive polarity output with reference to GND.
For this purpose, HO － (negative) terminal and “⑫ GND terminal ” shall be
short-circuited by the supplied short-bar.
⑭ Output impedance and coupling capacitance selectors ： Push-buttons select the desired
output impedance and coupling capacitance.
Output impedance selection
he push-buttons to control output impedance toggles between on and off. he lamp
indicates the relevant resistor has been inserted into the test circuit. Only 50 Ω resistor is
fixedly inserted. he others are all selectable between in and out. his feature provides
selection of 50 Ω to 200 Ω at a step of 10 Ω .
Coupling capacitance selection
the three push-buttons operate exclusively. Only one of them is operative.
he button with no capacitor sign is provided to select short-circuit.

14
【 Rear panel 】
S/N
AC100V～２４０Ｖ ±１０％
NOISE LABORATORY CO.,LTD.
MADE IN JAPAN
CERTIFICATE
検査合格証
⑮ ⑯ ⑰
⑮ PE screw ： Screw for safety grounding connection. When the unit cannot be grounded
through the AC cable. Use this screw.
⑯ AC inlet ： AC input for this unit. Supply 100V to 240V AC 50/60Hz.
⑰ Ventilation fan (aspiration) ： Do not block this ventilation intake the unit is operating.

15
7. ACCESSORIES
Before using the instrument, please check that none of the associated items are missing.
・ AC input cable ···················································································1 pcs.
・ Short bar ···························································································1 pcs.
・ Accessory bag ·····················································································1 pcs.
・ Instruction manual ( his booklet) ·······················································1 pcs.

16
8. OPERATION
Be extremely careful of an electric shock due to the generated surges. Before
connecting the EUT/
//
/DUT to this unit, be sure to turn off power supply to
EUT/
//
/DUT. Otherwise an electric shock due to the generated surge or power
supply may be caused.
8-1．Preparation
For operation of this unit, appropriately grounded AC mains (50/60 Hz) is necessary. Connect
this unit to power supply with 50/60 Hz.
8-2．Connections and settings
8-2-1．Connections and surge polarity setting
1. Connect this unit to AC mains.
2. Select the desired surge polarity by short-circuiting either HO terminal to GND terminal
with the supplied short-bar. Connection of HO - ( negative ) to GND terminal lets the unit
generate positive surges. Connection of HO + ( positive ) to GND terminal lets the unit
generate negative surges.
3. Connect the equipment or device under test to SURGE OU . Use cables with 1.5kV or
higher withstand capability.
8-2-2．Test duration setting
POWER
SURGE PERIOD
CONTINUE
TIMER
OUT
A
1. Check to see that the connection is correct.
2.
urn on the unit. Check to see Surge Voltmeter illuminates.
WARNING 警告

17
3. Select the desired operation mode by IMER/CON INUE mode select switch.
Operation in TIMER mode: (Press the left side of the button.)
he IMER setting knob provides setting for test duration time. he time range selector
switch at the lower left provides selection among 1.2/3/12/30 and the time unit selector at
the lower right provides selection among sec/10s/min/10min/hour/10hrs. All these three
combined provide the time range from 1.2 seconds to 300 hours. he upper right
operating mode selector shall always be set to A and never change this setting. In IMER
mode, the unit starts generating surges when the S AR button is pressed and
automatically stops surge generation after a lapse of the preset duration. he operator can
also forcibly stop the surge generation by pressing S OP button
Operation in CONTINUE mode: (Press the right side of the button.)
In CON INUE mode, the unit starts generating surges when the S AR button is
pressed and continues it until S OP button is pressed.
8-2-3．Surge repetition frequency setting
4 40 400
REPETITION
RATIO
0.1 1
 Select the maximum frequency by pressing either 4Hz, 40Hz or 400Hz button. he
adjacent knob controls supplementary adjustment by offering a multiplication from 0.1 to
1.
8-2-4．Output impedance setting
10Ω ２０Ω ４０Ω ８０Ω ５０Ω
 In the output stage of the surge generator, resistors can be selectively inserted. he block
diagram shown in a later page will help you to understand the concept.
 Press bush buttons. Illuminated buttons are operative; the relevant resistors have been
inserted. he 50 Ω resistor has been fixedly inserted into the circuit. Add, therefore, 50 Ω
to the total values of illuminating buttons.

he push buttons toggle between on and off. If a luminous button is pressed, the light is
turned off and the connected resistor is disconnected.
 When any of the push buttons is pressed, the unit suspends surge generation and resume

18
operation with a newer impedance setting.
8-2-5．Coupling capacitance setting
470pF
100pF
 In the output stage of the surge generator circuit, a capacitor can be inserted. Refer to the
block diagram.
 hree selections are available: none (short), 100pF and 470pF. wo or more selection at
the same time cannot be done.
 When any of the push buttons is pressed during surge generation, the unit suspends surge
generation and resumes operation with a new capacitance setting.
8-2-6．Surge voltage setting
VOLT.ADJ
MAXMIN
V
 Adjust to the desired voltage by rotating the VOL ADJ knob. Rotate it clockwise to higher
the voltage and counterclockwise to lower the level.
8-3．Execution of test
1. Press S AR button. SURG OU lamp will turn on.
2. In IMER mode, the unit automatically stops surge generation. o terminate surge
generation, press S OP button.
3. In CONINUE mode, the unit continues to generate surges until the S OP button is pressed.