Partners for HV and EMC Solutions MIL-STD-461 G. Partners for HV and EMC Solutions

Transcription

1 MIL-STD-461 G 1

2 MIL-STD-461 G 2

3 MIL-STD-461 G 2015 Current Version Superseding Back Ground MIL-STD-461F (2007) MIL-STD-461E (1999) Test Methods and Limits MIL-STD-461D (1993) Test Limits MIL-STD-462D (1993) Test Methods 48 Years old! 3

4 Current Requirements 4

5 CS115 Unique to MIL-STD-461 Replaces RS06 chattering relay test in MIL-STD-461C Excites natural resonances in EUT cabling Waveform defined at system interface 5

6 CS115 6

7 CS115 Output Sample Waveform in calibration jig 7

8 CS116 Previously CS 10, 11, 12, 13 EMP excitation of cable bundles Waveform defined at system interface Frequencies fixed 8

9 CS116 Damping Rate or Q 100% 50% Test Frequencies : 10kHz, 100kHz, 1MHz, 10MHz, 30MHz, 100MHz 9

10 CS116 Output Cosine wave is allowed. In this case Q is calculated from the first full sine wave (NEGATIVE) 10

11 CS116 Output 11

12 Typical Setup for CS115 & CS116 Calibration Equipment Setup 12

13 Typical Setup for CS115 & CS116 Test Equipment Setup 13

14 MIL-STD-461G MIL-STD-461G Draft 14

15 MIL-STD-461G What is in the update Text to clarify use of FFT based receiver Modified CS114 test Addition of lightning tests CS117 Based on DO-160 Sec22 Addition of ESD tests CS118 Based on IEC

16 MIL-STD-461G FFT based receivers can be used for older versions of MIL-STD-461 as long as it meets the basic receiver requirements 16

17 RE/CE Receiver 6.67x 66.7x 66.7x 66.7x 10x 10x With 10x more sampling 30 MHz 1 GHz can take as little as 1 sec for a complete measurement with an FFT 17

18 RE/CE Receiver Ideally The acquisition of the FFT Receiver and calculation shall be during the dwell time gapless, preferable in real-time Receiver must be gapless during measurement Best if readout is real-time for better analysis 18

19 RE/CE Receiver Frequency scanning. For emission measurements, the entire frequency range for each applicable test shall be scanned. Minimum measurement time for analog measurement receivers during emission testing shall be as specified in Table II. Synthesized measurement receivers shall step in one-half bandwidth increments or less, and the measurement dwell time shall be as specified in Table II. For equipment that operates such that potential emissions are produced at only infrequent intervals, times for frequency scanning shall be increased as necessary to capture any emissions. For these applications where timing can be long. An FFT based receiver is an economical solution 19

20 Transients Missing Modified New 20

21 BCI Testing CS114 RF Conducted Susceptibility 21

22 CS114 RF Conducted Susceptibility What's changed BCI Testing New calibration setup requirement New verification requirement New max current limit induced on cabling 22

23 BCI Testing Monitor Probe and fixture is introduced into the setup for Calibration 23

24 BCI Testing New Verification procedure to verify the monitor probe is functioning correctly 24

25 BCI Testing Curve #5 115dBµV Curve #4 103dBµV Curve #3 95dBµV Curve #2 88dBµV Curve #1 83dBµV Maximum allowable induced current on cables F version was limited to 6dB above the curve example shown for curve 5 25

26 BCI Testing Setups may require the addition of a fixture for the monitor probe and modification to software 26

27 Indirect Lightning CS117 Conducted Susceptibility 27

28 Indirect Lightning CS117 Conducted Susceptibility Lightning Induced Transients, Cables and Power Leads Applicable for Army, Navy, Airforce Aircraft Space Vehicles (limited) 28

29 Why Test 29

30 Why Test 30

31 Who Tests 31

32 Who Tests 32

33 Who Tests Form decades years of experience in the commercial world the military is able to befit from this history 33

34 Indirect Lightning Lightning stroke (click to play) Slow replay (click to play) 34

35 Indirect Lightning 35

36 Indirect Lightning How does this translate to equipment on the inside of the aircraft? 36

37 Multiple Burst Multiple Stoke Multiple Stroke Multiple Burst 37

38 Indirect Lightning 38

39 Indirect Lightning CS117 39

40 Indirect Lightning CS117 CS117 Indirect Lightning Most waveforms as in DO-160 section 22 Multiple stroke Multiple Burst Specific Test Levels NO PIN or Single Stroke 40

41 CS117 Proposed Levels MIG-OS-MB w/ext MIG0600MS 41

42 CS117 Proposed Levels MIG-OS-MB w/ext MIG0600MS V L = Voltage Limit I T = Current Test I L = Current Limit for 1 wire* Test to the Test level in this case Current unless voltage is hit first then switch pulses and test to Voltage waveform. * For cable bundle with 1 wire test only to I L 42

43 CS117 Proposed Levels MIG-OS-MB w/ext 43

44 CS117 Proposed Levels V T = Voltage Test I L = Current Limit I T = Current Test for 1 wire* Test to the Test level in this case Voltage unless Current is hit first then switch pulses and test to Current waveform. NOTE: Voltage is hit in most configurations. MIG-OS-MB w/ext * For cable bundle with 1 wire test only to I T 44

45 CS117 Proposed Levels MIG0600MS 45

46 CS117 Proposed Levels MIG-OS-MB w/ext 46

47 CS117 Calibration Calibration is performed with the above setup. Voltage pulse and current pulse may not be from the same generator. Open Loop = Voltage Closed loop = Current 47

48 CS117 Test Setup Like other MIL-STD tests power leads are tested both with the return and without the return. 48

49 CS118 Requirements 49

50 CS118 Proposed Levels CS118 Electrostatic Discharge Test equipment from IEC ±2kV up to ±15kV 150pF & 330ohm 50

51 CS118 Proposed Levels 51

52 CS118 Proposed Levels CS118 Electrostatic Discharge Pre-Test Verification Measure voltage at ESD Tip At each new test level 52

53 CS118 Verification CS118 Electrostatic Discharge Calibration Contact up to 8kV DSO bandwidth 1GHz -4-2 requires 2GHz (We suggest 4GHz) Target from IEC

54 Path for Final MIL-STD_G Next Steps (tentative) Open for public comment Closes mid May Collect and review comments Plan for final release end of

55 Solution for Indirect Lighting 55

56 Solution for Indirect Lighting EMC Partner sets the standard (90+ systems): worldwide no. 1 Airbus, Boeing, Bombardier, AVIC, COMAC NASA, Honeywell, Rockwell Collins, Goodrich (UTC), Selenia, Aselsan, Panasonic Aviation Test labs TUV, NTS, IABG, Interspace 56

57 Solution for Indirect Lighting 57

58 Solution for Indirect Lighting 58

59 Solution for Indirect Lighting 59

60 Solution for Indirect Lighting 60

61 Solution for Indirect Lighting 61

62 Solution for Indirect Lighting 62

63 Solution for Indirect Lighting 63

64 Thank You Jason Smith EMC Sales & Marketing Manager HV TECHNOLOGIES, Inc Virginia Meadows Drive Manassas, VA HVT - "" (T) , ext (F) (M) smith@hvtechnologies.com 64