>>Mesh Performance

Mesh Performance

The performance of any RFI / EMC window is dependent on how well it is bonded to the equipment screen. The following tables show the screening capability of the mesh, where the mesh itself is clamped to the screen with no gaskets in between.The shielding performance will improve as the window size reduces, due to the performance characteristics of the aperture. Mesh selection should be based on required performance and with the way that it interacts with your chosen display.

SHIELDING PERFORMANCE (dB ATTENUATION)

Test Window 300 x 300 mm

Openings

Wire

E

FIELD

PLANE

WAVE

Mesh

per inch

diameter

1 MHz

10 MHz

100 MHz

100 MHz

400 MHz

1 GHz

10 GHz

Copper

100

0.001

90

90

70

50

20

Copper

100

0.002

107

111

85

70

70

58

Stainless

50

0.002

94

90

82

58

55

28

Stainless

80

0.001

106

88

82

64

60

34

Stainless

100

0.001

128

112

92

77

80

86

74

Stainless

80 x 60

0.001

102

105

103

75

60

43

Test Window 1000 x 1000 mm for BLK / Cu / 100 opi / 0.002 / 90º

Frequency

Mode

ITO (dB)

Single Mesh (dB)

Double Mesh (dB)

100 KHz

E

-

98

123

1 MHz

E

-

93

152

10 MHz

E

32

78

124

100 MHz

E

28

65

111

400 MHz

P

32

60

115

1 GHz

P

28

50

94

10 GHz

P

24

-

67

Test methods used were consistent with MIL – STD – 285
The about test results are for guidance only

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