EN61000-4-6 Immunity to conducted disturbances, induced by radio-frequency fields ?????????????????

1
EN61000-4-6Immunity to conducted disturbances,
induced by radio-frequency fields????????????????
?

• Provided By
• PH Yuan

2
???????

• ????
• 9KHz to 80MHz
• ????????????,?????,????????,???,???????????????
  ??????-??????????????

3
????

???? 150KHz to 80MHz ???? 150KHz to 80MHz
?? ?? u0/dB(uV) U0/V
1 120 1
2 130 3
3 140 10
x ??
???????????(rms)?????
4
????????

• Clamp injection ???
• ????????????????
• Current Clamp ???
• ?????????????????
• Electromagnetic clamp ???
• ?????????????
• Coupling Network ????
• ???????????????????????
• Decoupling Network ?????
• ????????????????????????

5
????????

• ??????????????????????????,???????????,???????????
  ???????????,?????????????????????????

?? 0.15 26MHz 26MHz to 80MHz 26MHz to 80MHz
Zce 150? 20? 150? 60?
Zce 150? 20? 150? - 45?
6
??????????

0.1mltLlt0.3m
0.5m
?AE?????
CDN T2
????
T2
0.5m
???
EUT
??
CDN M2
T2
?AE
CDN AF2
????????
T2
???? h 10cm
?????
?????
7
?????

• ??????
• ??????????????100???????????????
• ???????
• ???????????????????????,??????????(unshield)??,?
  ?CDN-M1,M2,M3,T2,T4,T8,AF2??????????????

8
- RF-signal generator -Modulation
source -Variable attenuator -Broadband power
amplifier -6 dB attenuators -RF-cables
Coupling devices -Coupling- Decoupling Networks
(CDN) ??????? -Electro-Magnetic clamps (EM
clamp) ???? -Current injection clamp ???????
Test generator
CS ???????
Level setting -150/50 Ohm-adaptors -Calibration
jig -Current probe -Power- or voltage-meter
Utilities -Software to control the
tests -RF-switchboard -Equipment for
EUT-monitoring
9
????????????
Yes
Yes
10
?? CDN ???
???? - Simple and reliable method of injecting
RF-energy into the EUT-port, need no
additional measurements during the test Low
input Power - Because CDNs have low insertion
loss Required ???????? (0dB) for the disturbance
signal

??CDN??????(0dB) ?
??CDN??? - ??40?CDN?????
??????230MHz -??????80MHz


11
CDN ????

• S-Type -used for all screened and coaxial ports
• ???????????
• M- Type -used for unscreened AC/DC-power supply
  ports
• ?????????AC/DC???
• AF-Type -used for all unscreened unbalanced
  lines
• ??????????
• T- Type -used for unscreened,balanced
  lines
• ?????????

12
CDN M-Types

• ???AC/DC????

• CDN M1
• CDN M2
• CDN M3
• CDN M4
• CDN M5

• for use on single conductor lines or (protective
  )earth lines
• for use with two lines systems without PE
• for normal 3 wire supply systems( line, neutral,
  PE)
• for 3 phase systems (3 lines and PE)
• for 3 phase systems ( 3 lines, neutral and
  protective earth

13
CDN S-Types

• ?????,?????

• CDN S1 -BNC-connections, can be supplied for
  50, 75 and 93 Ohm application
• CDN S2 -2 line, uses a 3 pin audio sockets
• CDN S4 -4 line, uses a 5 pin audio sockets
• CDN S9 -9 line, uses a 9 pin D-type conn.
• CDN S15 -15 line, uses a 15 pin D-type conn.
• CDN S25 -25 line, uses a 25 pin D-type conn.
• CDN S36 -36 line, uses a
  Centronics conn.
• CDN ST08 -4 pairs of balanced lines, 9 pin
  D-type
• CDN USB -Universal serial bus connector

14
CDN AF-Types

• ??????????

• CDN A200 -2 line, uses 3 pin audio sockets
• A2,3,4 -2, 3, 4 lines, uses 4mm sockets
• A8,9,15,25 -8,9,15,25 lines,
• uses selected pins of a D-type connector 25
  pin

15
CDN T-Types
Coupling devices

• Used for all unscreened balanced lines for
  telecommunication ports

• T200 -1 pair, uses 4mm sockets
• T400 -2pairs, uses 4mm sockets
• T246 -1 pair, uses selected pins of a RJ45
  connector
• T411 -2 pairs, uses selected pins of a RJ11
  connect.
• T442-445 -2 pairs, uses selected pins of a RJ45
  connect.

High LCL of pairs
16
Electro- magnetic clamp

• Useful for all kind of cables

KEMZ
accessories for level setting
17
Set-up for the level setting at the EUT-port of
CDN s
18
Equipment for the level setting at the EUT-port
of CDN s

• ???
• a 150 Ohm terminator for the AE-side for all
  unscreened ports
• and a 150 to 50 Ohm adapter for the EUT-socket.
  (Both of them must be connected to the Common
  mode points)

19
Example for level setting equipment

• Universal- solution

150 Ohm termination TRA U150
150 to 50 Ohm adapter CAL U100
Common mode adapter SARxxxx
20
Example for level setting equipment

• Special- solution

150 Ohm termination TRA xxxx
150 to 50 Ohm adapter CAL xxxx
21
Test generator in general
Test generator
AM- Modulator
Attenuator variable
Power amplifier
6dB attenuator
RF-input coupling device
Signal generator
22
Compact generator NSG4070??
23
Universal test set up as project
The pros flexible solution, SW allow complex
test set up with more then one port to be tested
and EUT monitoring The cons more expensive
24
Universal CS test set up project
Parts of solution

• Coupling devices and utilities
• Signal generator
• Power amplifier
• RF-power meter or RF-volt meter
• RF-switchboard
• 6dB-attenuators
• Controlled by PC via IEEE 488-Bus or LAN
• Software

25
Example for the required input power
The pink colour curve describe the output power
requirements for the calibration of test set up
(?????????) The blue curve is calculated with
additional 5,1 dB for 80 AM