RadiMation Application Note 154: Difference between revisions

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[[File:CS114_Test_level.png]]
[[File:CS114_Test_level.png]]


=== Create calibration test setup file ===
=== Create calibration test setup files ===


There are three frequency ranges that have to be calibrated with the following settings:
There are three frequency ranges that have to be calibrated with the following settings (see TABLE III).
{|class="wikitable"
{|class="wikitable"
! Band || Frequency range || Step size  
! Band || Frequency range || Step size  
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| Band 2 || 30 MHz - 200 MHz  || 0.5 %
| Band 2 || 30 MHz - 200 MHz  || 0.5 %
|}
|}
{{Menu|Calibration|System calibration|Conducted immunity}}
{{Menu|Calibration|System calibration|Conducted immunity}}


Create three test setup files, this example shows the settings for band 1.
Create three test setup files, this example shows the settings for band 1.
[[File:CS114_Calibration band 1.png]]
{{ScreenElementDescriptionStart}}
{{ScreenElementDescription|Start|The start frequency of the test. For example 10 kHz.}}
{{ScreenElementDescription|End|The stop frequency of the test. For example 1 MHz.}}
{{ScreenElementDescription|Step|The frequency step, in this case 5%.}}
{{ScreenElementDescription|Test level|The test level, in this case 5%.}}
{{ScreenElementDescription|Variable|The variable test level, select the correction file created earlier.}}
{{ScreenElementDescriptionEnd}}


== Verification ==
== Verification ==

Revision as of 15:24, 16 October 2023

How to perform a MIL-STD CS114, Conducted susceptibility, bulk cable injection test[edit]

This application note explains how the MIL-STD CS114, Conducted susceptibility, bulk cable injection test can be performed with RadiMation®

The exact requirements and test methods for the CS114 are specified in the MIL-STD-461.

Necessary equipment[edit]

The following devices are necessary to execute this test:

  • Signal generator
  • Amplifier
  • Coupler
  • Forward power meter
  • Reflected power meter (optionally)
  • Current sensor
  • Sensor power meter / Analyser
  • 50 Ohm load
  • 50 Ohm attenuator
  • LISN
  • Current injection device
  • Current injection calibration jig (Calibration fixture)
  • Cable drivers with corrections

Configuration of the test sites[edit]

Calibration[edit]

CS114 Calibration.png

The configuration of the calibration test site should contain the following devices:

Device name Tab in testsite configuration window note
Signal generator Devices 1 The signal generator to use
Amplifier Devices 1 The amplifier to use
Coupler Devices 1 The coupler to use
Forward power meter Devices 1 The forward power meter to use
Reflected power meter Devices 1 The reflected power meter to use (optionally)
Sensor power meter Devices 2 The power meter or analyser to use for measuring the current
Current sensor Devices 2 The current sensor to use with transfer factor attached to the driver
Injection device Devices 2 The injection clamp to use
Jig Devices 2 The jig to use
Cable current -> power meter Cables Cable (1) with a correction file specified for the cable loss
Cable current -> power meter Cables Cable (2) with the specified loss of the used attenuator
Cable current -> power meter Cables Cable (3) with a correction file specified for the cable loss

Verification[edit]

CS114 Verification.png

The configuration of the verification test site should contain the following devices:

Device name Tab in testsite configuration window note
Signal generator Devices 1 The signal generator to use
Amplifier Devices 1 The amplifier to use
Coupler Devices 1 The coupler to use
Forward power meter Devices 1 The forward power meter to use
Reflected power meter Devices 1 The reflected power meter to use (optionally)
Sensor power meter Devices 2 The power meter or analyser to use for measuring the current
Current sensor Devices 2 The current sensor to use with transfer factor attached to the driver
Injection device Devices 2 The injection clamp to use
Cable current -> power meter Cables Cable (1) with a correction file specified for the cable loss
Cable current -> power meter Cables Cable (2) with the specified loss of the used attenuator
Cable current -> power meter Cables Cable (3) with a correction file specified for the cable loss

EUT Testing[edit]

CS114 EUT Testing.png

The configuration of the eut test site should contain the following devices:

Device name Tab in testsite configuration window note
Signal generator Devices 1 The signal generator to use
Amplifier Devices 1 The amplifier to use
Coupler Devices 1 The coupler to use
Forward power meter Devices 1 The forward power meter to use
Reflected power meter Devices 1 The reflected power meter to use (optionally)
Sensor power meter Devices 2 The power meter or analyser to use for measuring the current
Current sensor Devices 2 The current sensor to use with transfer factor attached to the driver
Injection device Devices 2 The injection clamp to use
Cable current -> power meter Cables Cable (1) with a correction file specified for the cable loss
Cable current -> power meter Cables Cable (2) with the specified loss of the used attenuator
Cable current -> power meter Cables Cable (3) with a correction file specified for the cable loss

Calibration procedure[edit]

Create correction file for the test level[edit]

   Menu.svg File
      Menu.svg New
         Menu.svg Correction

First create a correction file in RadiMation® and specify the applicable test level (See 'TABLE IV CS114 limit curves.' and 'FIGURE CS114-1. CS114 calibration limits.'). In this example the limits for 'Aircraft (External or safety critcal) / Curve 5 are configured.

Make sure to remove the Correction column and add the Current column with the unit set to dBuV.

CS114 Test level.png

Create calibration test setup files[edit]

There are three frequency ranges that have to be calibrated with the following settings (see TABLE III).

Band Frequency range Step size
Band 1 10 kHz - 1 MHz 5 %
Band 2 1 MHz - 30 MHz 1 %
Band 2 30 MHz - 200 MHz 0.5 %
   Menu.svg Calibration
      Menu.svg System calibration
         Menu.svg Conducted immunity

Create three test setup files, this example shows the settings for band 1.

CS114 Calibration band 1.png


ScreenElementDescription.svg Start The start frequency of the test. For example 10 kHz.
ScreenElementDescription.svg End The stop frequency of the test. For example 1 MHz.
ScreenElementDescription.svg Step The frequency step, in this case 5%.
ScreenElementDescription.svg Test level The test level, in this case 5%.
ScreenElementDescription.svg Variable The variable test level, select the correction file created earlier.


Verification[edit]

EUT Testing[edit]

Conclusion[edit]

The sensitivity of an EUT to incoming electromagnetic interference. This is equivalent to the term Immunity. RadiMation® always uses the term Immunity.

The ability of an EUT to be immune to incoming electromagnetic interference. This is equivalent to the term susceptibility that is used by some standards.

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