cmc-e computer results report · 1000m083d213 rev. 0 electromagnetic compatibility testing of the...

1000M083D213

Rev. 0

ELECTROMAGNETIC COMPATIBILITY TESTING

OF THE BES

CMC-E COMPUTER

RESULTS REPORT

August 2007

REVISIONS

Revision ECN No. Date Name Signature

0 Released 8/2007 68112 I. D.

THESE DRAWINGS AND SPECIFICATIONS

SHALL NOT BE REPRODUCED OR USED WITHOUT WRITTEN PERMISSION

Date Name Signature Title:

PREPARED 8/2007 08930 Schwartz

I. S.

EMC ENGR 8/2007 65625 Z. V.

QC ENGR

CONFIG ENGR

8/2007 68112 I. D.

PROJ ENGR

ELECTROMAGNETIC COMPATIBILITY TESTING

of the BES

CMC-E COMPUTER

RESULTS REPORT

Classification Rev DOC. No.: 1000M083D213

Unclassified 0 CAGE Code: S7431 Sh 1 of 38

Doc. No. 1000M083D213 Rev 0 Page 2 of 38

TABLE OF CONTENTS

Paragraph Page

1 GENERAL..................................................................................................................................................... 4

1-1 PURPOSE............................................................................................................................................................. 4 1-2 APPLICABLE DOCUMENTS .................................................................................................................................. 4 1-3 TESTS PERFORMED ............................................................................................................................................. 4 1-4 UNIT UNDER TEST IDENTIFICATION AND DESCRIPTION ................................................................................ 4 1-4.1 Units Description............................................................................................................................................... 4 1-5 TEST SETUP AND UUT OPERATION........................................................................................................... 5 1-6 CRITERIA FOR SUSCEPTIBILITY TO INTERFERENCE............................................................................ 6 1-7 BONDING OF THE UUT ....................................................................................................................................... 6 1-8 TEST LOCATION, DATES AND PERSONNEL.......................................................................................................... 6

2 SUMMARY OF RESULTS.......................................................................................................................... 7

3 CE102 - CONDUCTED EMISSIONS, POWER LEADS, 10 KHZ TO 10 MHZ.................................... 8

3-1 PURPOSE ............................................................................................................................................................. 8 3-2 TESTED LINES..................................................................................................................................................... 8 3-3 TEST EQUIPMENT................................................................................................................................................ 8 3-4 REQUIRED TEST LIMITS ....................................................................................................................................... 8 3-5 TEST SETUP AND PROCEDURE ............................................................................................................................. 9 3-5.1 Calibration......................................................................................................................................................... 9 3-5.2 UUT Testing....................................................................................................................................................... 9 3-6 RESULTS.......................................................................................................................................................... 9

4 CS114 - CONDUCTED SUSCEPTIBILITY, BULK CURRENT INJECTION, 10KHZ - 200 MHZ . 13

4-1 PURPOSE........................................................................................................................................................... 13 4-2 TESTED LINES................................................................................................................................................... 13 4-3 REQUIRED LEVELS ............................................................................................................................................ 13 4-4 TEST EQUIPMENT ............................................................................................................................................. 13 4-5 TEST SETUP AND PROCEDURE .......................................................................................................................... 14 4-5.1 Calibration....................................................................................................................................................... 14 4-5.2 UUT Test.......................................................................................................................................................... 16 4-6 FAILURE CRITERIA............................................................................................................................................ 16 4-7 RESULTS........................................................................................................................................................... 16

5 RE102 - RADIATED EMISSIONS, 2 MHZ TO 18 GHZ........................................................................ 19

5-1 PURPOSE........................................................................................................................................................... 19 5-2 TEST EQUIPMENT.............................................................................................................................................. 19 5-3 TEST REQUIRED LIMITS ..................................................................................................................................... 19 5-4 TEST SETUP AND PROCEDURE ........................................................................................................................... 20 5-4.1 Calibration....................................................................................................................................................... 20 5-4.2 UUT Testing..................................................................................................................................................... 20 5-4.3 Results Presentation ........................................................................................................................................ 20 5-5 RESULTS........................................................................................................................................................ 20

6 RS103 - RADIATED SUSCEPTIBILITY, ELECTRIC FIELD, 2MHZ –10GHZ................................ 25

6-1 PURPOSE........................................................................................................................................................... 25


TABLE OF CONTENTS

Paragraph Page

6-2 REQUIRED LEVELS ............................................................................................................................................ 25 6-3 TEST EQUIPMENT.............................................................................................................................................. 25 6-4 TEST SETUP AND PROCEDURE .......................................................................................................................... 26 6-4.1 Setup ................................................................................................................................................................ 26 6-4.2 Calibration....................................................................................................................................................... 26 6-4.3 UUT Testing..................................................................................................................................................... 26 6-5 FAILURE CRITERIA............................................................................................................................................ 27 6-6 RESULTS........................................................................................................................................................... 27

APPENDIX A - ANTENNA CORRECTION FACTORS........................................................................................ 35


0

1 GENERAL

1-1 PURPOSE

The CMC-E Computer of BES was put through an electromagnetic compatibility radiated susceptibility test in order to measure the intensities of emissions conducted and radiated from it and its susceptibility to such interference and to verify its combatibility with the specifications requirements.

This document details the tests results.

1-2 APPLICABLE DOCUMENTS

MIL-STD-461E - Requirements for the Control of Electromagnetic Interference Emissions and Susceptibility (20 August 1999).

BES, CMC-E Quqlification Procedure, BES, Doc. No. 20624050-405 Rev. A, 1/1/07.

1-3 TESTS PERFORMED

Tests in accordance with MIL-STD-461E

• CE102 - Conducted Emissions, Power Leads, 10 kHz - 10 MHz

• CS114 - Conducted Susceptibility, Bulk Cable Injection, 10 kHz - 200 MHz, Curve #5.

• RE102 - Radiated Emissions, Electric Field, 2MHz - 18 GHz, Fixed Wing Internal(*)

• RS103 - Radiated Susceptibility, Electric Field, 2 MHz - 10 GHz.

1-4 UNIT UNDER TEST IDENTIFICATION AND DESCRIPTION

The Unit Under Test (UUT) was a Mission Computer manufectured by BES:

Part Number: 20624100-100

Serial Number: 001

1-4.1 Units Description

The UUT has five connectors on its front panel:

Power (J1) – was fed with 28Vdc via LISNs.

ETH (J2) – Lan connector, was connected to an auxiliary PC computer.

S-Video – not connected.

Avionic – not connected.

VGA – not connected.


1-5 TEST SETUP AND UUT OPERATION

The Unit Under Test (UUT) was placed in the testing chamber of the shielded test laboratory on a grounding surface, and grounded to the surface via a short conductor.

The UUTs was powered from 28Vdc filtered source through LISN. The power cable between the LISN and the UUT was 2.5m long, unshielded.

LAN cable was connected to J2 of the UUT by a 3m long shielded cable.

Both cables were raised by 5 cm from the conductive table

During tests – a network monitoring program was running between the PC monitor and the UUT.

Figure 1-1: General UUT Setup


Figure 1-2: Auxiliary equipment

1-6 CRITERIA FOR SUSCEPTIBILITY TO INTERFERENCE

Emissions tests: The system was considered to meet the emissions tests requirements if its RF outputted signals were within the MIL-STD-461E allowed levels.

Susceptibility tests: The UUT was considered as immune to electromagnetic interference if the Monitor PC display is refreshed continuesly and no interruptions occur to it.

1-7 BONDING OF THE UUT

Bonding of the UUT to the testing conductive table was performed with short grounding strips to achieve the required DC impedance. The DC resistance is detailed in the following table

Table 1-1: Bonding Test Data Sheet

BONDING TEST DATA SHEET

Date: 26/12/2006 Test Eng.: I. S.

From To Resistance [mΩ] Comments

Table UUT 0.8 --

Table LISN 1 1.0 --

Table LISN 2 0.8 --

Table Wall 0.2 --

1-8 TEST LOCATION, DATES AND PERSONNEL

Mr. I. S. of Elisra performed the tests at the Electromagnetic Compatibility Laboratory.

The UUT was operated during testing by Mr. M. Filmus of BES.

The tests were conducted on July 11th to 15th, 2007 and on July 23rd to 24th, 2007.


0

2 SUMMARY OF RESULTS The CMC-E computer was tested at the Electromagnetic Compatibility Laboratory.

The tests were conducted on July 11th to 15th, 2007 and on July 23rd to 24th, 2007.

The following were performed in accordance with MIL-STD-461E:

Test Standard

Results Outcome Section

CE102 All UUT emissions were within the specified limits. Pass 3

CS114 No susceptibility to interference was found during this test. Pass 4

RE102 All UUT emissions were within the specified limits. Pass 5

RS103 No susceptibility to interference was found during this test. Pass 6


0

3 CE102 - CONDUCTED EMISSIONS, POWER LEADS, 10 KHZ TO 10 MHZ

3-1 PURPOSE

The purpose of this test was to measure the intensity of emission from power input leads of the UUT.

3-2 TESTED LINES

• +28V input power lead

• 28Vrtn input power lead

3-3 TEST EQUIPMENT

HP 8566B Spectrum analyzer

HP 85685A RF preselector

Agilent 33120A Function generator

HP 83620B Signal generator

TEK TDS 3052 Oscilloscope

Solar 9322-50-PJ-50 LISNs

3-4 REQUIRED TEST LIMITS

The allowed limit of emissions is set out in Mil Std 461E Figure CE102-1 – Basic curve.

Figure 3-1

CE102 Limit for 28V Source Voltage

50

60

70

80

90

100

10 100 1000 10000


3-5 TEST SETUP AND PROCEDURE

3-5.1 Calibration

The calibration was set up as per MIL-STD-461E, Figure CE102-2, but without an attenuator between the LISN (signal measurement port) and the spectrum analyzer.

The signal received signal was verified to be sinusoidal and was recorded.

Table 3-1: CE102 Calibration Results

11 kHz 100 kHz 2 MHz 9.9 MHz

Figure number 3-3 3-3 3-4 3-4 V[dBµV] (calculated) 86 68 54 54 V[dBµV] (Measured) 86 67 53 53

Deviation [dB] 0 1 1 1

3-5.2 UUT Testing

The UUT testing setup was as per MIL-STD-461E, Figure CE102-3 and the following Figure 3-2.

The signals emitted from the UUT were measured at the LISN’s signal measurement port using the spectrum analyzer.

The test was performed under full loads at the output lines.

The results are shown in a series of figures following this paragraph:

Figures 3-5 and 3-6 for the 28Vdc line.

Figures 3-7 and 3-8 for the 28Vrtn line.

Each graph includes the testing limits. The presented limits are corrected with the following factors depicted in MIL-STD-461E figure A-4 (LISN correction Factor)

Figure 3-2: CE102 Measuring Point - LISN

3-6 RESULTS

All measured emissions from the UUT were within the specified levels.


Figure 3-3

Figure 3-4


Figure 3-5

Figure 3-6


Figure 3-7

Figure 3-8


0

4 CS114 - CONDUCTED SUSCEPTIBILITY, BULK CURRENT INJECTION, 10KHZ - 200 MHZ

4-1 PURPOSE

The purpose of this test was to verify the ability of the UUT to withstand RF signals coupled onto its associated cables.

4-2 TESTED LINES

• +28V input power lead - Dispenser

• Input power leads (CM) - Dispenser

• LAN cable

4-3 REQUIRED LEVELS

The UUT shall not exhibit any malfunction or degradation when subjected to a test signal of MIL-STD-461E curve #5, and as described in the following Figure 4-1.

Figure 4-1: MIL-STD-461E - CS114 test level #5

CS114 limit #5

60

70

80

90

100

110

0.01 0.1 1 10 100 1000MHz

dBuA

4-4 TEST EQUIPMENT

• HP 8566B Spectrum analyzer

• HP 85685A RF preselector

• FCC CF-120-1 Current injection probe (10 kHz - 10 MHz)

• FCC CF-130-1 Current injection probe (10 MHz - 200 MHz)

• Stoddart 91550-1 Current monitoring probe

• FCC-BCICF-1 Calibration fixture


• HP 33120A Function generator (10 kHz - 10 MHz)

• HP 83620B Signal generator (10 MHz - 200 MHz)

• 50Ω coaxial load

• ENI 210L Power amplifier (10k - 10 MHz)

• ENI 510L Power amplifier (10M - 500 MHz)

• Solar 9322-50-PJ-50 LISNs

• WEINSCHEL 68-30-34 30dB Attenuator

• JFW 50FH-010-50-N 10dB Attenuator


4-5.1 Calibration

The calibration setup was as described in Figure 4-2, which is in accordance with MIL-STD-461E, Figure CS114-3.

The injection probe was placed in the test fixture.

Figure 4-2: Calibration Setup (Typical)

Amplifier

F-120-1 orF-130-1Inj. Probe

30dB

10dB

50Ohm

SpetrumAnalyzer

Calib. Fixture

Signal Gen.

Vlmt[dBµV] = Ilmt[dBµA] + 34dBµV -40dB

An unmodulated signal was applied to the injection probe. The amplitude was increased until the required Vlmt level obtained. These levels are equivalent to the Figure 4-1 limit (after adding the correction factors).

The amplitude of the signal generator (“Forward Power”) required for achieving Vlmt was measured and is given in Figure 4-3 and the specified measured level is given in Figure 4-4..


Figure 4-3

Figure 4-4


4-5.2 UUT Test

The following procedure was applied to each of the tested cables listed in paragraph 4-1. The set up is described in Figure 4-5.

The monitoring probe was positioned 5 cm from the connector of the tested cable.

The injection probe was positioned 5 cm from the measuring probe.

Figure 4-5: Test Setup (Typical and actual)

PC controller

Amplifier

F-120-1 orF-130-1Inj. Probe

UUT

LISN

SpetrumAnalyzer

Signal Gen.

Measuring Probe

The testing signal levels as well as the frequency stepping were controlled by the PC controller via the GPIB bus.

At each tested frequency, a forward power signal level determined during the calibration step (but not higher then the CS114 test level) was applied to the injection probe and was modulated by a 1-kHz pulsed 50% duty cycle.

The scan rate was as follows:

• At 10 kHz to 1 MHz range: Stepped scan rate of 0.05*fo

• At 1 MHz to 30 MHz range: Stepped scan rate of 0.01*fo

• At 30 MHz to 200 MHz range: Stepped scan rate of 0.005*fo

At each tuned frequency the dwell time was 1 sec.

The actual applied current to the tested wire/harness is presented in figures Figure 4-6 to Figure 4-8.

4-6 FAILURE CRITERIA

As detailed in paragraph 1-6.

4-7 RESULTS

No susceptibility to interference was found during this test.


Figure 4-6

Figure 4-7


Figure 4-8


0

5 RE102 - RADIATED EMISSIONS, 2 MHZ TO 18 GHZ

5-1 PURPOSE

The purpose of this test was to measure the intensity of radiated emissions from the UUT.

5-2 TEST EQUIPMENT

• HP 8566B spectrum analyzer

• HP 85685A RF preselector

• Singer 95010-1 active rod antenna

• EMCO 3109 biconical antenna

• EMCO 3146DP dual log periodic antenna

• EMCO 3115 double ridge guide antenna


• Elisra MWA500M2.5G 33dB Low Noise Amplifier 0.5GHz-2.5GHz

• Elisra MWA020060-4025 40dB Low Noise Amplifier 2GHz-6GHz

• Elisra MWA 06180-4165 40dB Low Noise Amplifier 6GHz-18GHz

The correction factors of the antennas are given in Appendix A.

5-3 TEST REQUIRED LIMITS

The UUT and its cables shall not emit electromagnetic emissions that exceed the limit set out in MIL-STD-461E Figure RE102-3 “Fixed Wing Internal, <25m” curve.

"External" Requirements are applicable to Firing Plate of Dispenser.

Figure 5-1: RE102, aircraft limit, <25m nose to tail

10

20

30

40

50

60

70

80

90

10k 100k 1M 10M 100M 1G 10G 100G

Frequency (Hz)

Lim

it Le

vel (

dBµ V

/m)

24

34

44

89

69

79

18G

Fixed Wing External (2MHz to18 GHz)and Helicopters

Fixed Wing Internal,>25 meters Nose to Tail

Fixed Wing Internal, < 25 meters Nose to Tail



5-4.1 Calibration

The calibration was set up as per MIL-STD-461E, Figure RE102-5. Calibration was checked at frequencies of 29MHz, 195MHz, 1GHz and 18 GHz

Calibrated signal, which is 2 dB below the limit, was applied to the coaxial cable at the antenna connection point. For the rod antenna, the calibration signal was applied to the matching network at the rod calibration point.

The calibration results are presented in Figure 5-3.

5-4.2 UUT Testing

The UUT testing setup was as per MIL-STD-461E Figure RE102-5 and the following Figure 10-2.

The signals emitted from the UUT were measured at the antenna output ports using the spectrum analyzer.

Due the UUT size, one antenna position was required for this test.

5-4.3 Results Presentation

The results are shown in the following figures. The graphs include the testing limits.

All required correction factors were added to the ploted signals.

Figure 5-4 – Active Rod Antenna, 10kHz to 30MHz frequency range

Figure 5-5 – Biconical Antenna, 30MHz to 200MHz frequency range, Vertical and Horizontal polarizations

Figure 5-6 – Log Periodic Antenna, 200MHz to 1GHz frequency range, Vertical and Horizontal polarizations

Figure 5-7 – Double Ridge Guide Antenna, 1GHz to 18GHz frequency range, Vertical and Horizontal polarizations

5-5 RESULTS

From the plots it is seen that all the emissions from the UUT were within the allowed range.


Figure 5-2: RE102 Test Setup

(a) 10 kHz to 30 MHz (b) 30 to 200 MHz, Vertical

(c) 30 to 200 MHz, Horizontal (d) 200 to 1000 MHz

(e) 1 to 18 GHz, Vertical (f) 1 to 18 GHz, Horizontal


Figure 5-3

Figure 5-4


Figure 5-5

Figure 5-6


Figure 5-7


0

6 RS103 - RADIATED SUSCEPTIBILITY, ELECTRIC FIELD, 2MHZ –10GHZ

6-1 PURPOSE

The purpose of this test was to determine the ability of the UUT and its cables to withstand electric fields.

6-2 REQUIRED LEVELS

The UUT shall not exhibit any malfunction or degradation when subjected to the radiated electric fields levels listed in Table VII of MIL-STD-416E, "Aircraft Internal", "AF":

50 V/m for the 2 MHz – 10GHz band.

6-3 TEST EQUIPMENT


• Agilent 33120A function generator (1 kHz - 10 MHz)

• HP 83620B signal generator

• ENI 240L power amplifier (1 kHz - 10 MHz)

• ENI 510L power amplifier (10 MHz - 500 MHz)

• MPD LAB1-410-25 power amplifier (500 - 1000 MHz)

• PST AR1929 power amplifier (1 - 2 GHz)

• HUGH 1277H01 TWT power amplifier (2 - 4 GHz)

• HUGH 1277H02 TWT power amplifier (4 - 8 GHz)

• Varian VZM-6991-K3K TWT power amplifier (8 - 18 GHz)

• IFI EFG-3 parallel plate radiating antenna (10 kHz - 30 MHz)

• EMCO 3109 biconical radiating antenna (30 MHz - 300 MHz)

• EMCO 3146DP log periodic radiating antenna (300 MHz - 1000 MHz)

• Emco 3115 double ridge guide antenna (1 GHz - 18 GHz)

• IFI EFS-5 electric field sensor (10 kHz - 500 MHz)

• Narda 8716 sensor for EFS-5 (500 MHz - 50 GHz)

The correction factors for the EMCO 3146DP and 3115 antennas are given in Appendix A.



6-4.1 Setup

A schematic setup of the test is shown in is as shown in Figure 6-1. The actual setups for the various antennas used are shown in Figure 6-2.

The power for use by the UUT was supplied from the LISNs to the UUT.

The EUT was bonded to the ground plane. All power and interconnecting leads are supported on insulated standoff 5cm above the ground plane.

The radiating antenna was centered in front of the UUT setup boundary.

The field sensor was placed on the conductive test table in front of the system cables.

The E field probe connected to the multimeter that monitored the interfering signal level. A PC controller controlled the signal level and changes in accordance the amplitude level of the Signal Generator. The multimeter was set to DC Voltage measuring mode.

6-4.2 Calibration

The electric field sensors were placed on the UUT directly opposite to the transmitting antenna. The ambient level measured by the electric field sensors was less than 0.1 V/m.

6-4.3 UUT Testing

The following testing procedure is controlled by the PC Controller via the GPIB bus.

The signal source (CW) was set to 10 kHz frequency.

The required electric field was established by applying the signal through an appropriate amplifier and transmitting antenna.

The field amplitude was tuned to the required level (“maintain performance”) according the reading of the field sensor.

The signal source was set to 1 kHz pulse modulation, 50% duty cycle.

The dwell time at each tuned frequency was 1 second, after which the test proceeded to the next testing frequency.

The required frequency was scanned at the rate of depicted in MIL-STD-461E Table III.

At frequencies up to 30 MHz the test was performed with the transmitting antenna vertically polarized. At frequencies above 30 MHz the test was performed with the transmitting antenna once vertically polarized and once horizontally polarized.

The actual applied electric field is measured by the E field sensor that is connected to the multimeter. The level measured by the multimeter is recorded by the PC controller that also monitored the interfering signal level.

Due the UUT size, one antenna position was required for this test.


6-5 FAILURE CRITERIA

As detailed in paragraph 1-6.

Figure 6-1. RS103 Test Setup

E.U.T.

Multimeter

AMPLIFIER

SIGNALGENERATOR

fln :RS03 setup

HPIB

PCController

L I S N

LOAD

E fieldmeter

Trans. Antr.

> 1 m

> 1 m

> 1 m

F.O.

LightDemodulator

6-6 RESULTS

The actual field intensity applied on the UUT during the “maintain performance” test is shown in

Figure 6-3 to Figure 6-15. The graphs include as well the required testing limits.

During this test no susceptibility to interference was obtained.

Figure 6-2: RS103 Test Setup

(a) (b)

(c) (d)


(e)

Figure 6-3


Figure 6-4

Figure 6-5


Figure 6-6

Figure 6-7


Figure 6-8

Figure 6-9


Figure 6-10

Figure 6-11


Figure 6-12

Figure 6-13


Figure 6-14

Figure 6-15


0

APPENDIX A - ANTENNA CORRECTION FACTORS

Figure A-1. Transfer Impedance for 91550-1 Current Probe


Figure A-2: Transfer Impedance for F-120-1 Current Probe

Transfer Impedance FactorFCC F-120-1 Current Probe

02468

1012141618202224

0 . 01 0 . 1

1 10 100

1000

MHz

dB

Oh

m

Figure A-3: Transfer Impedance for F-130-1 Current Probe

Transfer Impedance FactorFCC F-130-1 Current Probe

-16

-12

-8

-4

0

4

8

12

16

20

24

28

32

36

0 . 01 0 . 1

1 10 100

1000

MHz

dB

Oh

m


Figure A-4: Correction Factor for SOLAR 7334-1 Loop Antenna

Figure A-5: Correction Factor for EMCO 3109 Antenna

EMCO Model 3109High Field Biconical Antenna

Serial No. 2062

5

7

9

11

13

15

17

19

21

23

25

20 40 60 80 100 120 140 160 180 200 220 240 260 280 300

Frequency (MHz)

Ant

enna

Fac

tor

(dB/m)

To convert to Field Intensity dBuV/m] : Add the Antenna Factor [dB/m] to

receiver reading [dBuV].

Date: 27/12/99


Figure A-6: Correction Factor for EMCO 3146DP Antenna

Figure A-7: Correction Factor for EMCO 3115 Antenna

EMCO Model 3146DPDual-Polerized Log Periodic Antenna

Serial No. 1067

1012141618202224262830

200

250

300

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

Frequency (MHz)

Ant

enna

Fac

tor

[dB

/m]

Date: 28/12/99

EMCO Model 3115Double Ridge Guide Antenna

20

25

30

35

40

45

50

1000

2000

3000

4000

5000

6000

7000

8000

9000

1000

0

1100

0

1200

0

1300

0

1400

0

1500

0

1600

0

1700

0

1800

0

Freq. [MHz]

Ant

enna

Fac

tor

[dB

/m]

S.N.: 4387 Date: 28/12/99

cmc-e computer results report · 1000m083d213 rev. 0 electromagnetic compatibility testing of the...

Documents