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Evolution Technologies
Máquina de reducción de ruido
MK-461C
Manual de usuario
Evolution Technologies MK-461C Manual de usuario Pagina 12
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EMC seminar
Overview
Ty
pes of Tests Made
Page
12
Modulation
Noise
Distortion
EMC
1
2
...
7
8
9
10
11
12
13
14
15
16
17
...
104
105
Misure di compatibilita’
1
Elettromagnetica
1
Soluzioni Agilent
2
What is EMC?
3
Definitions
4
EMI measurement system
6
Pre-compliance measurements
7
Full Compliance measurements
7
CISPR Pulse Generator for
9
Testing the QP response
9
Page 10
10
What is an EMI Receiver?
11
Distortion
12
Theory of Operation
13
Broadband
14
Narrow band
14
Digitizing the IF Signal
15
Some troublesome operations
15
FFT Analyzer
16
Specifications
17
280 sec
17
134 sec
17
13.5 sec
17
Speed Improvements
18
Modern spectrum analyzer
19
Digital Filter Shape
21
CISPR Bandwidth Requirements
22
10 KHz - 150 KHz 1 KHz
23
“Buckets”
24
Detectors
25
Page 26
26
Peak ≧ QP ≧Average
27
RMS Average detector table
29
Page 32
32
Page 33
33
@ 150 kHz to 30 MHz
34
Transient Limiter
35
[ohm] Free Space Impedance
36
Page 37
37
Broadband antenna examples
38
Close field probe
39
Test example
40
EMC Regulations
41
Frequency Bands
43
Page 45
45
CISPR changes…
49
European Norms example
50
MIL-STD 461 Testing
51
Summary
53
Product Life Cycle
54
Cost of retesting
55
EMI problem costs
56
Breadboard/Design
56
Prototype
56
Production
56
Compliance Testing
57
Page 58
58
Page 59
59
Page 60
60
Page 61
61
41.2563MHz
62
218.120MHz
62
1500.260MHz
62
Examples of Test Facilities
63
Open Area Test Site (OATS)
64
GTEM Cell details
65
Test Facilities (cont’d)
66
Page 67
67
Page 68
68
2. Load Corrections factors
69
3. Load Limit line
70
Page 71
71
Page 72
72
X-Series signal analyzer
73
Antennas and tripod
73
Precompliance testing
74
-Measurements repeatability
75
DUT power cord*
76
EMC App
76
3 or 10 Meter distance
77
X-Series Signal Analyzer
77
Troubleshooting
78
Immunity test setup
79
Agilent Solutions
80
Frequency
81
CISPR 16-1-1 2010
82
N9038A MXE EMI Receiver
84
20 Hz -1GHz
85
Swept spectrum analyzer;
86
FFT analyzer;
86
Noise Figure analyzer
86
“All Digital IF” Advantages
87
Reduce RBW
88
This is
89
Noise Floor Subtraction
90
Improved noise floor
91
(0.2 - 0.4 dB) error
92
• Limit Lines (2000 pts)
93
• 40001 sweep points
93
CISPR 16-1-1 detectors
94
Quasi Peak measurements
94
Page 95
95
Amplitude at
96
Amplitude
96
Limit line edit display
97
Meters
98
Meters tune
99
Strip Chart
100
• Spectrogram
101
• Trace Zoom
101
• Zone Span
101
EMC seminar
102
Solution partners for EMC
104
Roberto Sacchi
105
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