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LANGER 

EMV-Technik 

DE-01728 Bannewitz  
[email protected] 
www.langer-emv.com 

ESA1 

 
 

 

RF-U 5-2 

The  near-field  probe  is  designed  for 

detecting  surface  and  circular  magnetic  fields  on 
very  wide  conducting  paths,  metallized  surfaces, 
plug-and-socket 

connectors, 

electronic 

components, cables and component connections. 
The  sources  of  RF  magnetic  fields  can  be 
detected  and  conclusions  regarding  internal 
interference currents achieved. 

 

Frequency: 30 MHz to 2 GHz 

Resolution: approx. 5 mm

 

 

 
 

 

RF-B 3-2

 The near-field probe is designed for the 

detection  of  magnetic  fields  which  are  emitted 
vertically  from  the  surface  area  of  flat  units.  The 
probe  enables  measurement  of  obstructed  parts 
of  the  printed  circuit  board.  It  is  not  possible  to 
conduct  measurements  of  field  orientation  such 
as can be done with the RF-R 3-2 probe. 
 

Frequency: 30 MHz to 3 GHz 

Resolution: approx. 2 mm

 

 

 
 
 

 

RF-B

 

0.3-3

 detects a magnetic field, which enters 

the probe’s head vertically. It is therefore suitable 
for  pin-point  detection  of  RF  magnetic  fields, 
which are emitted by surfaces. For this, the probe 
head is placed on the surface in question. Due to 
its  very  small  construction,  magnetic  field 
distributions of under 1 millimeter can be resolved 
on  IC  housings  and  PCB  surfaces,  for  example. 
The  probe  enables  measurements  in  hard-to-
reach places, such as between components.

  

 
Frequency: 30 MHz to 3 GHz 

Resolution: < 1 mm 

 

 

 
 
 

 

RF-R

 

0.3-3 

allows for high-resolution detection of 

spatial  RF  magnetic  fields.  The  loop  opening, 
which is marked by a white dot, can be manually 
turned  to  identify  field  orientation  and  intensity.  If 
the  loop  opening  is  orthogonally  permeated  by 
the  field,  a  maximum  can  be  detected.  The 
minimum  can  be  detected  by  pivoting  the  loop 
opening  by  90°.  This  allows  the  detection  of  H-
field  distribution  (orientation  and  intensity)  by 
guiding  the  probe  in  the  vicinity  of  components, 
between  and  over  track  runs,  in  the  pin  area  of 
ICs, on block capacitors, EMC components, etc.  

 
Frequency: 30 MHz to 3 GHz 

Resolution: < 1 mm

 

 

 
 

 
 

 

RF-E 02 

Bus  structures,  larger  components,  and 

supply  areas  couple  out  electrical  fields  by  their 
surfaces. These electrical fields may be the cause 
of  electromagnetic  emission.  The  probe  RF-E 02 
detects  these  fields  via  the  probe  bottom  on  an 
area of approx. 2 cm x 5 cm. 

For  measuring  the  probe  is  gradually  brought 
closer or is put directly on the Unit Under Test. 

 
Frequency: 30 MHz to 1.5 GHz

 

 

 

 

Содержание ESA1

Страница 1: ...r Manual Development System Disturbance Emission ESA1 Measuring disturbances emitted by a module comparative measurements at the developer s workplace Copyright C Dipl Ing Gunter Langer N thnitzer Han...

Страница 2: ...ar field probes 14 3 5 Modification of the module 15 4 Measurement set up variants 16 4 1 Measurement of the common mode component 16 4 1 1 Unit under test with one cable terminal 16 4 1 2 Unit under...

Страница 3: ...stem of the unit under test is excited through electric or magnetic coupling i e in the near field This metal system comprises the PCB itself and all connected cables and metal parts such as housings...

Страница 4: ...well as the output of the latter Figure 2 Figure 2 GP 23 Ground Plate The nickel plated surface ensures a steady and reliable conductive connection to the HFW 21 RF current transformer or HFA 21 RF by...

Страница 5: ...the immediate vicinity of the unit under test is possible because all cables to the unit under test are disconnected coupled to the base plate through capacitive coupling or filtered in a typical ESA1...

Страница 6: ...ft and right side of the shielding material against the ground plate An uninterrupted connection between the ground plate and shielding material is crucial for an effective shielding Figure 6 Z23 1 sh...

Страница 7: ...e currents flowing on both lines whereas the differential mode currents are measured via the DIFF output The RF output voltage is independent of the direct current flowing through the transformer if c...

Страница 8: ...s It is mainly used to simulate the data lines connected in normal operation and their capacitance relative to the surroundings Instead of the data line a discrete capacitance is connected to the sign...

Страница 9: ...d measured by the probe and typical examples for application Optionally available The near field probes of the LF type are available for measurements in the frequency range between 100 kHz and 50 MHz...

Страница 10: ...of the ground plate Inside the shielding tent connect the 12 V input of the PA 203 to the 3 5 mm connector on the ground plate via the enclosed power supply cable approx 10 cm long two power supply p...

Страница 11: ...ly emitted This information allows you to design a measurement set up so that the decisive emitted currents can be measured To confirm the measurement set up compare your measurement results with the...

Страница 12: ...re gridlines allow the developer to compare measurement curves very precisely in the linear or logarithmic 2D diagram Figure 18 Data Manager 2 Storage and export of measured data Any amount of measure...

Страница 13: ...evices can also be stored in configuration files and reloaded 3 3 Localization through global changes to the unit under test The unit under test often allows you to locate the emission sources by chan...

Страница 14: ...0 1 for magnetic and the probe RF E 02 for electric fields These measurements give you an idea of the respective disturbance emission mechanism As a next step locate the sources of these exciting fiel...

Страница 15: ...ed damping or the lines of force are kept in the immediate vicinity of the source and do not exit the module Having detected the potential disturbing fields on the module you will automatically have i...

Страница 16: ...r test is installed near a metal surface control system in a washing machine simulate this distance The scope of delivery includes a foam block 25 mm high which you can use as a distance piece Figure...

Страница 17: ...nk to the ground plate Establish a direct conductive connection from the GND terminal of the plug and socket connector to the ground plate instead of the cable in the simplest case Figure 24 You can a...

Страница 18: ...nd those of the basic unit 1 Plug and socket connector between basic unit and interface module Assumption The basic unit and interface module are connected to each other via data and control lines The...

Страница 19: ...ifications such as filters or changing the plug assignment are directly measurable Figure 28 GND of the interface module connected to the COM output of the HFW 21 2 Electronic components processor wit...

Страница 20: ...module feeds a RF current into the signal wires of the data cable This current couples to the shield via the cable capacitance of signal wire shield and flows back to the GND of the interface module I...

Страница 21: ...upply systems Figure 31 Set up without the basic unit 4 1 5 External data lines 1 Measuring the RF current on data lines To measure the RF current on data lines simulate the capacitance of the line co...

Страница 22: ...ts via the DIFF port Figure 34 According to the disturbance emission mechanism described under chapter 1 this differential mode current does not result in any disturbance emissions But since it also f...

Страница 23: ...th field sources The user is responsible for taking measures to protect the correct function of products outside the EMC environment of the test set up in particular against interference This can be a...

Страница 24: ...manufacture either by repair or by delivery of replacement during the statutory warranty period This warranty is only granted on condition that the information and instructions in the user manual have...

Страница 25: ...The probe head contains a magnetically active curb with a width of approx 0 5 mm To achieve measurement the probe with the curb is positioned on conducting paths IC or capacitor connections Frequency...

Страница 26: ...rface in question Due to its very small construction magnetic field distributions of under 1 millimeter can be resolved on IC housings and PCB surfaces for example The probe enables measurements in ha...

Страница 27: ...C pins and small components Frequency 30 MHz to 3 GHz RF E 10 The near field probe detects electrical fields that clocked leads emit via their surface The probe head tip is approx 0 5 mm wide The inte...

Страница 28: ...z 1 GHz DC socket 12 V 2 5 A 40 dB at 1 MHz 1 GHz Pole terminal 10 A 50 dB at 1 MHz 1 GHz 7 5 Z23 1 shielding tent Working room length x width x height Damping Z23 1 900 x 500 x 400 mm 45 50 dB at 30...

Страница 29: ...3 GHz 1 11 H Field Probe RF R 400 1 30 MHz 3 GHz 1 12 H Field Probe RF U 2 5 2 30 MHz 3 GHz 1 13 H Field Probe RF U 5 2 30 MHz 3 GHz 1 14 E Field Probe RF E 02 30 MHz 1 5 GHz 1 15 E Field Probe RF E 0...

Страница 30: ...Probe tip 1 33 ChipScan ESA software CS ESA 1 34 Dongle 1 35 User manual 1 36 Laminated quick guide 1 37 ESA1 system case 1 The shielding tent is alternatively available with a taller working space 90...

Страница 31: ...nically processed either in its entirety or in part without the prior written permission of Langer EMV Technik GmbH The management of Langer EMV Technik GmbH assumes no liability for damage that may a...

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