Cybertek EM5040 User manual

Shenzhen Zhiyong Electronics Co., Ltd.
www.cybertek.cn
Line Impedance Stabilization Network
EM5040 (9kHz-30MHz/16A)
EM5040A (9kHz/150kHz-30MHz，16A)
EM5040B(9kHz/150kHz-30MHz，16A,with common mode and differential mode)
EM5040C(100kHz-200MHz/100A)
Shenzhen Zhiyong Electronics Co., Ltd.
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
1
Preface
First of all, thank you for purchasing our products, this instruction manual is the description
about the function, usage, operation attention points, etc. Before use, please read the
instructions carefully and use correctly.
Manual annotation will use the following symbols to distinguish.
To the safely use the machine, you must abide by the following safety precautions strictly. The
violation against the manual is likely to damage the protective function of the machine. In
addition, the company is not responsible for any safety problem caused by the violation of
matters needing attention in operation.
This product is designed according to the international EMC standard, so, theoretically
there will be relatively large leakage current. If the ground condition is bad, there could
be deadly electric shock. Thus, the company requires the users to check the following tips:
 The ground must be good.(There’re ground point on the sides and back of the device)
 The electric environments of many users have bad grounding but users don’t know.
This is critically dangerous so the company require the users to have double protection:
users must install isolation transformer. Users can buy it on the market or use our
EM5060 isolation transformer (0.9kA), which can satisfy most low power test
requirement.
 Do not open the case or try to connect lines during operation. Do not use the LISN in
damp or explosive environment. Please keep the device surface dry and clean before
operating.
 Must make sure the product is used in the rating voltage/ current range.
 If there’s anything wrong with the product, please contact us immediately. Do not
open the case and try to repair the device to avoid unwanted accident.
Notice
Warning
In the case of wrong operation, the user risk injury. The content under this
mark records the relevant matters needing attention to avoid such dangers.
The user may suffer minor injuries and material damage with the wrong
operation. To avoid such situation, the matters under this mark need attention.
This symbol means it is harmful to the machine and human body; you must
strictly follow the instruction manual to operate.
Note
This symbolizes important note about how to use the machine.
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
2
1. Introduction
EM5040/5040A/5040B Line Impedance Stabilization Network is a kind of （50uH+5Ω）||50Ω
V type LISN. This product can provide stable impedance from 9 kHz to 30 MHz RF range for
DUT and reference. At the same time, it isolated the useless signal from the electric network to
measurement circuit and coupling the interference voltage of the DUT to the input port of the
measurement receiver. The product’s performance is compliant with standard requirements of
CISPR16-1-2 for V-networks. It suits conducted disturbance voltage measurement for single phase
equipment well. The standard BNC output port and 50Ω output impedance make the device
compatible to the measurement equipment such as receiver and spectrum analyzer of any
manufacturer. The artificial hand of the product can simulate the handle device to measure.
EM5040 is a type of single phase standard LISN. EM5040A has a limiter (with attenuation of
10dB) and an optional 150 kHz high pass filter. Users can choose to start from 9 kHz or 150 kHz
according to corresponding standard. The built in transient limiter can effectively protect receiver or
spectrum analyzer from damage caused by large signal. Users can connect EM5040A safely to
those devices without other limiter.
On the bases of EM5040A, EM5040B is added the function used for common mode and
differential mode measurement, which will provide assistance for EMI debugging, especially for
EMI filter.
EM5040C LISN is a type of single line （5uH+1Ω）|| 50Ω LISN. This product can provide
stable impedance from 100 kHz to 200MHz range for DUT and reference. At the same time, it
isolated the useless signal from the electric network and measurement circuit and coupling the
interference voltage of the DUT to the input port of the measurement receiver. It is compliant with
VDE0876 Part1 (onboard power-supply systems), VDE0879 Part2, CISPR16-1-2(Low-impedance
power supplies), CISPR25 and EMC Directive 95/94/EG, DIN40839, IS07637, MIL-STD-462,
MIL-I-6181D, MIL-E-55031, DEF STAN59-41 and DO 160.
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
3
2. Electronic Specifications
EM5040
EM5040A
EM5040B
EM5040C
Frequency range
9kHz—30MHz
100kHz—200MHz
Circuit type
（50uH+5Ω）|| 50Ω Type V
（5uH+1Ω）|| 50Ω
Measurement circuit
phase number
Single phase two wire L/N1
Single wire
AC voltage/
frequency range
0～264VAC / 50～60Hz ±5%
0～250VAC / 0～400Hz
DC voltage range
0～55V DC
0～600V
Power supply output
port
German standard power supply socket
M8 bolt
Output current
Rating 16A
Rating 100A
Short-time maximum current
（<30s）500A
Ground protection
Side metal panel grounding
Rear panel 4mm butterfly bolt grounding
2*M8 bolt
The bottom metal panel
(connected to the ground
plane with screws)
Output port
Standard 50Ω BNC female，
Standard 50Ω N female
Artificial hand
Yes
No
Output signal filter
No
High-pass filter 9kHz/150kHz
optional
No
Output signal limiter
No
Attenuation coeffcient-10dB
limit threshold 130dBuV
No
Output signal common
mode and differential
mode separator
No
No
Yes
Add 2 output
port
CM/DM
No
Operating temperature
range
0℃～45℃
Storing temperature
-20℃～70℃
Safety standard
EN61010-1
Size
338mm（Length）×237mm(Width)×133mm
（Height）
322mm（Length）
×122mm(Width)×128mm
（Height）
Weight
5kg
5.25kg
1.8kg
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
4
The max operating time for EM5040C in different operating current and different
environment temperature
3. Basic Theory
EM5040/5040A/5040B’s have a same V type LISN section. The difference is the subsequent
signal processing section. EM5040 only contain the basic Type V LISN section. To protect the
test receiver, users should add limiter to it, or users can choose our EM5010.

The theory of EM5040 is shown below:

EM5040Ais added with a limiter (10dB) and an optional 150kHz High Pass Filter
shown below:
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
5

EM5040B is added with Common Mode and Differential Mode Voltage separator
shown below:
 EM5040C single line Type V LISN shown below:
4. Introduction of EM5040/5040A/5040B/5040C
4.1 EM5040/5040A Front panel introduction

1 (L1 indicator): When powered up, the indicator will be lighted up blue.

2 (EUT power port): The product’s power port is Germany Standard. At the same time the
accessories in the product provide national standard adapter head.

3 (Reference Ground Port): 4mm port used to connect the ground port of DUT.

4 (N/L1): The switch selecting the phase line under test.

5 (9 kHz/150kHz Switch): The filter switch. EM5040 doesn’t have this function
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
6

6 (RF output port): Standard BNC RF output port used for connecting receiver or spectrum
analyzer. Because EM5040A has a 10dB transient limiter inside, so the receiver need to set
corresponding correction factor

7 (Artificial Hand function): This function will simulate the actual influence when human
hand touched the metal part of the handle tool. It is composed with 510Ω resister and 200pF
network. 4mm port is used for connecting the metal part for human contact handle
equipment
4.2 EM5040B Front panel introduction

1 (L1 indicator): When powered up, the indicator will be lighted up blue.

2 (EUT power port): The product’s power port is Germany Standard. At the same time the
accessories in the product provide national standard adapter head.

3 (Reference Ground Port): 4mm port is used for connecting the ground port of DUT.

4 (N/L1): The switch selecting the phase line under test.

5 (9 kHz/150kHz Switch): The filter switch.

6 (Channel Selection): Switch the output signal to the corresponding ports including RF
Output ，CM Output ，DM Output

7 (Artificial Hand function): this function will simulate the actual influence when human
hand touched the metal part of the handle tool. It is composed with 510Ω resister and 200pF
network. 4mm port is used for connecting the metal part for human contact handle
equipment

8 (CM OUTPUT Port): Standard BNC RF Female port is used for connecting receiver.
Output voltage is Vout=[VN+VL ]/2－10dB. With fixed 10dB transient limiter inside, the
receiver needs to set corresponding corrected attenuation factor.

9 (RF output port): Standard BNC RF Female port is used for connecting 10dB transient
limiter inside, so the receiver need to set corresponding corrected attenuation factor

10 (DM Output Port): Standard BNC RF Female port is used for connecting receiver.
Output voltage is Vout=[VN-VL) ]/2－10dB. With fixed 10dB transient limiter inside, the
receiver needs to set corresponding corrected attenuation factor.
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
7
4.3 EM5040/5040A/5040B Introduction about side metal ground panel and rear panel
Side metal ground panel is for ground protection
Rear Panel Introduction

Ground Port: This port has 4mm butterfly bolt for ground protection only. This is not for
reference ground.

Power input port: Mainly for powering DUT
4.4 EM5040C Introduction about the front and back panel
Front Back
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
8
1) EUT power port: power input port for EUT 1) Power input port: power supply input port
2) Ground port: the size of the bolt is 8mm, grounding 2) Ground port: the size of the bolt is 8mm, grounding
3) Output port: interference signal output port
with Type N female port
The bottom metal panel of EM5040C is the reference ground, users can connect it on the ground of
lab with screw.
5. Construction of EMC test platform
Please read the instruction book carefully, learn the safety knowledge and measure
according to correct step.
The product is designed according to national standard, so theoretically there will be
large leakage of current to ground. A bad grounding can possibly cause deadly electric
shock. As a result, the company requires the users:
 The device must be well grounded (There’re grounding point on the side and rear of
the device)
 Isolation Transformer must be installed as double protection.
Our company’s EM5060 isolation transformer can fulfill the requirement for most
tests.
 Do not open the case and connect lines during operation. Do not use in damp or
explosive environment. Please keep the device surface dry and clean before using it.
 Please make sure the product is working in rating voltage and current range.
 If there’s anything wrong with the product, please contact us immediately. Please do
not open the shell and try to repair it to avoid unwanted accident.
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
9
term
Description
1
Metal Panel at least 2mX2m
2
EUT
3
The method to fold the cable when it is longer than 1 meter.
4
Power supply port for EUT
5
Output shielded line
A
LISN
B
Isolation transformer
C
Receiver
6. Application of Common mode and Differential mode technology Using
EM5040B.

The conduct disturbance voltage of the switch power supply can always be represented by
differential mode and common mode voltage. Differential mode interference is the
interference generated between Line and Neutral, and the common mode interference is the
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
10
interference generated between Line and ground or Neutral and ground. Set L/N
interference voltage as VL and VN, and this signal can be seen as the combination of
common mode voltage VC and differential mode voltage VD.
VL= VC+VD
VN=VC-VD

The commonly efficient way to control differential mode interference signal and common
mode interference signal is to add EMI filter on the switch power supply input circuit. The
EMI filter on the power supply input port is a type of low pass filter consisted of capacitor
and inductance. The immunity to interference fitting every unit is quite different.

The figure below is a typical level two EMI filter.

EMI filter include common mode choke L, differential capacitor Cx and common mode
capacitor Cy.
L: Common mode choke is effective for common mode interference but not differential
mode interference. Theoretically the controlling effect is better when inductance is great,
but the increase of the turns of inductance will make the distribution capacitor larger and
the common mode suppression worse in high frequency.
Cx: Differential mode capacitor always use Metalized Film Capacitors with value ranging
between 0.1~1uF.
Cy: Used to control higher frequency common mode interference signal ranging between
2200~6800pF
Rx: The leak resistance for Cx

As a result users can use EM5040B to analyze whether the problem is caused by common
mode or differential mode interference and chose corresponding component: common mode
choke L, differential capacitor Cx and common mode capacitor Cy to fulfill the debugging .

Power Supply Filter is usually used to control the conduct disturbance below 30MHz, but it
is also effective for radiation emission interference over 30MHz. According to the
CYBERTEK

Shenzhen Zhiyong Electronics Co., Ltd.
11
characteristics of the power supply common mode and differential mode interference, the
interference can be classified into 3 ranges by its distribution: 150kHz~500kHz is mainly
for differential mode interference; 500kHz~5MHz is for differential mode and common
mode interference; 5MHz~30 MHz is mainly for common mode interference.
7. Packing List
Packing List
EM5040/5040A/5040B
EM5040C
LISN
1
1
RF cable
BNC(male) 2 meter
N(male) 2 meter
BNC female to N male
1
N/A
Germany to national
standard port
1
N/A
Instruction book
1
Warranty card
1
Test report
1
CYBERTEK
SHENZHEN ZHIYONG ELECTRONICS CO., LTD.
Addr：RoomA1702, Building 4, TianAn Cyber Park, HuangGe North Road, LongGang
District, ShenZhen City, China
Tel: [phone]
[phone]
Q Q: 400 852 0005
Fax: [phone]
Email: cy[email protected] © Zhiyong Electronics, 2018
URL: http://www.cybertek.cn Published in China, January 1, 2018
CYBERTEK