EMI Lab Manuals.pdf

Goddard Space Flight Center

Greenbelt, Maryland 20771

Doc.

xxxx-xx-xxxx-xxxx

RS103, Radiated Susceptibility, Electric Field

Testing Guide

Revision History

Date Version Description Author 01/10/23 1 Initial Draft Jones

Doc.

xxxx-xx-xxxx-xxxx

INTRODUCTION

This document outlines the equipment and steps required to set up and perform a CS116 Test.

It is meant to be a guide in setting up and running the test, not a detailed training document.

This guide is not a substitute for the EMI test procedure. Where there are differences between this document and the EMI test procedure, the EMI test procedure is the governing document and must be followed.

Doc.

xxxx-xx-xxxx-xxxx

TYPICAL EQUIPMENT LIST

Item Manufacturer Model # Comments Signal

Generator

Agilent/Keysite R&S

33250/33600A

SMB100A

Oscilloscope

Tektronix

DPO7354 (any calibrated scope can be used)

RF Amplifier IFI Mil_Mega

IFI

IFI

IFI

Power Meter R&S NRP/NRX Field Probe Monitor ETS EMCenter

Field Probe ETS Field Probe ETS

Directional Coupler Directional Coupler Directional Coupler

Antenna 10kHz-30MHz Antenna 30 MHz – 200MHz Antenna 200 MHz – 1 GHz Antenna 1 GHz – 18 GHz

TEST SETUP

Doc.

xxxx-xx-xxxx-xxxx

Test Method 1, Real time RF field monitoring

This method is generally the preferred method at GSFC, it differs from the pre-calibration method which is covered in a different document. This method requires no pre-calibration runs.

It relies on a control loop based on the output of RF field probe(s) placed near the DUT. Real time amplifier power output monitoring is employed in the software to protect the amplifiers, antennas and the DUT from damage or spurious signals. When practical, a scope is used to monitor the amplifier signal for proper modulation and cleanliness. There are several setup scenarios based on the room and the frequency range(s) tested. Generally, test setup should go as follows:

Establish GPIB and/or ethernet communications with all involved test equipment. Verify using NIMax.

Run Tile! and input frequency, level and power information.

Set up field probe, then clean and attach fiber optic cable.

Establish communications between the EMCenter monitor and the Field Probe.

Set up frequency appropriate directional coupler and attach power meter head to the forward port. Attach 50 ohm terminator to the reverse port.

Check all rf cables and blow out connectors using canned air (if not in clean room).

Attach and torque all rf cables.

With the amplifier off , run the tile! test briefly to insure all equipment is operating properly.

Verify probe and antenna placement with project before taking setup pictures.

Setup Examples of in-chamber equipment for 1GHz to 18GHz testing:

Doc.

xxxx-xx-xxxx-xxxx

RE102, Radiated Emissions, Electric Field

Testing Guide

12/20/22 1 Initial Draft James Pildis 2/15/23 2 Reformatting James Pildis

Doc.

xxxx-xx-xxxx-xxxx

INTRODUCTION

This document outlines the equipment and steps required to set up and perform an RE102 Test.

It is meant to be a guide in setting up and running the test, not a detailed training document.

This guide is not a substitute for the EMI test procedure. Where there are differences between and shall be followed.

Item Manufacturer Model # Comments EMI Receiver Rohde & Schwarz ESW44 Fast Scan

Signal Generator Keysight 33600A 1 µHz to 80 MHz Signal Generator Rohde & Schwarz SMB-100A 100 kHz to 40 GHz

RF Cable Gore N/A N/A Antenna ETS Lindgren 3301-C Rod Antenna Antenna ETS Lindgren 3110-C Biconal Antenna Antenna ETS Lindgren 3106-B Large Horn Antenna Antenna EMCO 3115 Small Horn Antenna

Preamplifier Rohde & Schwarz TS-PR18 N/A Comb Generator Comm Power CG-515 1 MHz to 1.5 MHz Comb Generator Comm Power CGO-5100A 1 GHz to 18 GHz

Tripod N/A N/A N/A

Doc.

xxxx-xx-xxxx-xxxx

TEST SETUP

This test setup covers the initial layout of equipment as well as the steps for programming RE102 scans in EMC32. Use the following steps as a reference while setting up and running Radiated Emissions testing.

1.) Insert the EMC32 Emissions key in the computer. This will ensure real emissions data is collected and stored, rather than generalized preliminary scans. Launch EMC32 and begin programming for RE102 based on procedure specifications provided by the project.

2.) Create the EUT information file that will display project and subproject information on each test scan.

Doc.

xxxx-xx-xxxx-xxxx

3.) Create a Limit Line file for the full range of frequencies being tested. Unless there are gaps in the test ranges, one Limit Line is all that is needed.

4.) Create a Test Template for each antenna range and each individual testing notch. Be sure to select the proper Hardware Setup based on the equipment you will be using, the Limit Line created earlier, and the project EUT Information file. Select “Standard EMI Report” as the generation template for exported test runs. Reports should be saved in EMC32 as individual test runs and exported in Word and PDF files.

5.) For each Test Template, review the test procedure to determine which subranges are required for each antenna range. Add each of those frequency subranges into the generated Test Template, and select the appropriate resolution bandwidth, scan type, duration, and input port. All Radiated Emissions are performed using port number one.

Doc.

xxxx-xx-xxxx-xxxx

8.) Once all System Integrity Checks are complete, set up the first antenna needed.

Remove all unnecessary items from the test chamber, seal all unused passthrough ports, and close the doors. Open the relevant Test Template and begin the scan. Save test runs using the format: Test No. xxx RE102 START FREQUENCY to STOP FREQUENCY.

Select the button to generate the Test Report. When prompted, fill out all information in the generated sheet. Hit the save button to sync the generated report with the test file in EMC32. Export the report to Windows, and provide digital/printed copies to the project as needed.

CONDUCTED EMISSIONS

1.) Program Test Files

a. Create EUT Information File

b. Create separate Limit Line File for each Test Type

i. CE01/CE101

ii. CE02/CE102

iii. CE03

iv. CMCE

2.) Create Test Template for each Test Type

a. Select Hardware Setup

b. Select Limit Line Graphic

c. Select Standard EMI Report Settings

d. Select Project EUT Information File

e. Set Frequency Range

f. Set Resolution Bandwidth

g. Set Scan Type

h. Set Input

3.) Complete System Integrity Check Before Testing

a. Verify Programmed Equipment in EMC32

b. Connect Test Fixture to Signal Generator and Attached Probe to Test Receiver

c. Choose one central test frequency per Subrange

d. Find Limit Value at each test frequency

e. Input Limit Value in System Verification Spreadsheet to calculate Signal Generator Level

f. Input Frequency and Level in Signal Generator and enable RF Output

g. Run Test and record peak in System Verification Spreadsheet to verify test integrity

4.) Complete Testing

a. Attach probes to necessary lines in True Differential

b. Attach probes to necessary lines in Common Mode

c. Open relevant Test Template and run test

d. Save Test As “Test No. xxx TEST-TYPE START-FREQUENCY STOP-FREQUENCY”

e. Generate Test Report and fill out prompted fields, save test after report generated.

f. Export Test report as Word Document and PDF

RADIATED EMISSIONS

1.) Program Test Files

a. Create EUT Information File

b. Create separate Limit Line File for each Test Type

i. RE01/RE101

ii. RE02/RE102

2.) Create Test Template for each Test Type and each Notch

a. Select Hardware Setup

b. Select Limit Line Graphic

c. Select Standard EMI Report Settings

d. Select Project EUT Information File

e. Set Frequency Range

f. Set Resolution Bandwidth

g. Set Scan Type

h. Set input

3.) Complete Background Scans

a. Set up required equipment and seal chamber doors

b. Run tests from lowest to highest frequencies in Horizontal and Vertical Polarizations

c. Once per each antenna, run one test with Comb Generator to verify signal readings

4.) Complete System integrity Check Before Testing

a. Verified Programmed Equipment in EMC32

b. Connect Antenna/Preamplifier to Signal Generator and Test Receiver

c. Choose one central test frequency per Subrange

d. Find Limit Value at each test frequency

e. Input Limit Value in System Verification Spreadsheet to calculate Signal Generator Level

f. Verify Antenna Factor at each frequency in EMC32 and System Verification Spreadsheet

g. Input Frequency and Level in Signal Generator and enable RF Output

h. Run Test and record peak in System Verification Spreadsheet to verify test integrity

5.) Complete Testing

a. Set up required antenna for test type

b. Enable Preamplifier if required

c. Completely seal chamber before testing

d. Open relevant test template and run test

e. Save Test As “Test No. xxx TEST-TYPE START-FREQUENCY STOP-FREQUENCY”

f. Generate Test Report and fill out prompted fields, save test after report generated.

g. Export Test report as Word Document and PDF

Doc.

xxxx-xx-xxxx-xxxx

CS116, Conducted Susceptibility, Impulse Excitation

Testing Guide

1/12/2023 1 Initial Draft C Choulos

Doc.

xxxx-xx-xxxx-xxxx

INTRODUCTION

This document outlines the equipment and steps required to set up and perform a CS116 Test.

It is meant to be a guide in setting up and running the test, not a detailed training document.

This guide is not a substitute for the EMI test procedure. Where there are differences between

Item Manufacturer Model # Comments Damped Sinusoidal Transient Generator

Solar 9354-1

Current Injection Probe

Fischer Custom Communication

F-120-8

Calibration Fixture Fischer Custom Communication

FCC-BCICF-4

Monitoring Current Probes

Fischer Custom Communication

F-33-2

Attenuators Various Various Typical values are 20dB and 40 dB

Terminators Various Various 50 Ohm for calibration fixture

CALIBRATION SETUP

The following examples describe the calibration set up for a test using a level of 1, 5 & 10 Amps.

Set up the equipment per the diagram and photos on the following pages:

TEST SETUP

The following example describes the general test set up.

Set up the equipment per the diagram on the next page:

Doc.

xxxx-xx-xxxx-xxxx

CS101, Conducted Susceptibility, Low Frequency Susceptibility – Power Leads

Testing Guide

01/10/23 1 Initial Draft Jones

Doc.

xxxx-xx-xxxx-xxxx

INTRODUCTION

This document outlines the equipment and steps required to set up and perform a CS101 Test.

It is meant to be a guide in setting up and running the test, not a detailed training document.

This guide is not a substitute for the EMI test procedure. Where there are differences between and must be followed.

Item Manufacturer Model # Comments Signal

Generator

Agilent/Keysite 33250/33600A

HV Differential probe Tektronix Current Probe Tektronix

Audio Amplifier Solar 6552-1A Audio Transformer Solar 6220-1A

Resistive Load Solar 8814-2.4 2.4 ohms used on transformer primary

Resistor Various Various Used to verify software setup prior to test.

CALIBRATION SETUP

Test Method 1, Real time Voltage and Current Monitoring

This method has become the preferred method at GSFC, it differs from the Mil-Std-461G method which is a pre-cal method and covered in a different document. This method requires no pre-calibration runs. Prior to hooking up to DUT, a test into a resistor attached to the Solar transformer should be run to verify active voltage and current limiting. Typically, a > 1 ohm resistor should result in voltage limiting and 0 ohms should result in current limiting.

CS101 Test Verification Setup (Voltage and Current Method)

Solar 6552-1A Audio Amplifier

DUT

SHIELD ROOM

Agilent 33250A Signal Generator

SOLAR 6220-1A

Audio Transformer

SOLAR 6512-106R

10uf Feedthru Caps

(typical)

GSE ROOM

To

GSE

Equipment

Tektronix Differential Probe

Tektronix Current Probe

10,000uf (typical)

Doc.

xxxx-xx-xxxx-xxxx

TEST SETUP

Test Method 1, Real time Voltage and Current Monitoring

WARNING: Never allow DUT to be powered up unless the amplifier is attached to the transformer and is turned on.

OR

The Solar 2.4 ohm resistive load is attached to the transformer primary.

Catastrophic damage to hardware could occur!

Set up test according to the diagram.

For safety, use an isolation transformer for all EMI test equipment.

Since you will be close to the DUT, an acceptable ESD cart and procedures should be followed.

Connect and establish communications between the test computer and the scope, signal generator via GPIB or ethernet. (Setting up and using Tile! to run the test is outside the scope of this document.)

Set up scope according to diagram.

Check that Solar Amplifier is turned on. Gain should generally be around 12 o’clock

(halfway up). Gain can be left at minimum until test time but keep in mind the possibility of a noisy gain pot.

After careful review of setup, project may power up.

Upon starting test, scope will auto-scale to the changing voltage/current conditions.

Doc.

xxxx-xx-xxxx-xxxx

CE101, CE03, CMCE

Testing Guide

2/28/23 2 Reformatting James Pildis

Doc.

xxxx-xx-xxxx-xxxx

INTRODUCTION

This document outlines the equipment and steps required to set up and perform a Conducted Emissions Test.

It is meant to be a guide in setting up and running the test, not a detailed training document.

This guide is not a substitute for the EMI test procedure. Where there are differences between

Item Manufacturer Model # Comments EMI Receiver Rohde & Schwarz ESW44 Fast Scan

Signal Generator Keysight 33600A 1 µHz to 80 MHz Signal Generator Rohde & Schwarz SMB-100A 100 kHz to 40 GHz

RF Cable AstroLab 45ft N/A Test Fixture N/A N/A N/A

Current Probe Pearson 3525 N/A Current Probe ElectroMetrics EM-6981 N/A Current Probe ElectroMetrics PCL-25 N/A Current Probe Solar EMC 91213-1N N/A

10 µF Feed Through Capacitors

Solar EMC 6512-106R N/A

Bulk Capacitor EPCOS N/A N/A

Doc.

xxxx-xx-xxxx-xxxx

TEST SETUP

This test setup covers the initial layout of equipment as well as the steps for programming Conducted Emissions scans in EMC32. Use the following steps as a reference while setting up and running Conducted Emissions testing.

1.) Insert the EMC32 Emissions key in the computer. This will ensure real emissions data is collected and stored, rather than generalized preliminary scans. Launch EMC32 and begin programming for CE101, CE03, and CMCE based on procedure specifications provided by the project.

Doc.

xxxx-xx-xxxx-xxxx gaps in the test ranges, one Limit Line per test type is all that is needed.

4.) Create a Test Template for each test type. Be sure to select the proper Hardware Setup based on the equipment you will be using, the Limit Line created earlier, and the project EUT Information file. Select “Standard EMI Report” as the generation template for exported test runs. Reports should be saved in EMC32 as individual test runs and exported in Word and PDF files.

required for each probe range. Add each of those frequency subranges into the generated Test Template, and select the appropriate resolution bandwidth, scan type, duration, and input port. All Conducted Emissions are performed using port number two.

Doc.

xxxx-xx-xxxx-xxxx

CE101, CE03, CMCE

Testing Guide

2/28/23 2 Reformatting James Pildis

Doc.

xxxx-xx-xxxx-xxxx

INTRODUCTION

This document outlines the equipment and steps required to set up and perform a Conducted Emissions Test.

It is meant to be a guide in setting up and running the test, not a detailed training document.

This guide is not a substitute for the EMI test procedure. Where there are differences between

Item Manufacturer Model # Comments EMI Receiver Rohde & Schwarz ESW44 Fast Scan

Signal Generator Keysight 33600A 1 µHz to 80 MHz Signal Generator Rohde & Schwarz SMB-100A 100 kHz to 40 GHz

RF Cable AstroLab 45ft N/A Test Fixture N/A N/A N/A

Current Probe Pearson 3525 N/A Current Probe ElectroMetrics EM-6981 N/A Current Probe ElectroMetrics PCL-25 N/A Current Probe Solar EMC 91213-1N N/A

10 µF Feed Through Capacitors

Solar EMC 6512-106R N/A

Bulk Capacitor EPCOS N/A N/A

Doc.

xxxx-xx-xxxx-xxxx

TEST SETUP

This test setup covers the initial layout of equipment as well as the steps for programming Conducted Emissions scans in EMC32. Use the following steps as a reference while setting up and running Conducted Emissions testing.

1.) Insert the EMC32 Emissions key in the computer. This will ensure real emissions data is collected and stored, rather than generalized preliminary scans. Launch EMC32 and begin programming for CE101, CE03, and CMCE based on procedure specifications provided by the project.

Doc.

xxxx-xx-xxxx-xxxx gaps in the test ranges, one Limit Line per test type is all that is needed.

4.) Create a Test Template for each test type. Be sure to select the proper Hardware Setup based on the equipment you will be using, the Limit Line created earlier, and the project EUT Information file. Select “Standard EMI Report” as the generation template for exported test runs. Reports should be saved in EMC32 as individual test runs and exported in Word and PDF files.

required for each probe range. Add each of those frequency subranges into the generated Test Template, and select the appropriate resolution bandwidth, scan type, duration, and input port. All Conducted Emissions are performed using port number two.