• All specifications are subject to change without notice.

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001-01 / 20030823 / e9632_zj.fm

EMC Components

ZJSR Series

3-Terminal Filters for Signal Line and DC Power Line

Lead(Round)

AN EXAMPLE OF MEASURING

NOISE SUPPRESSION EFFECT

(Radiation spectrum)

TTL OUTPUT WAVEFORM WITHIN A SHIELDING CASE

MODEL

RADIATION LEVEL

(a)WITHOUT EMC FILTER

(b)WITH EMC FILTER

BICONICAL ANTENNA INDUCED WAVEFORM

Anechoic chamber

(FCC filed)

Specimen

under test

3m

Antenna

height:

1 to 4m

Vertical/horizontal

polarization planes

Mesh size: less than 30mm

Antenna height above

ground: 25cm

EMC receiver system

Nonconductive

stand

Time(10ns/DIV.)

900mm

T TL74ALS04

EMC filter

Shield case

R:500

Ω

C:50pF

1000

300

100

30

10

3

1

Frequency(MHz)

0

20

40

60

80

100

VCCI(3m)

TTL74ALS04

1000

300

100

30

10

3

1

0

20

40

60

80

100

VCCI(3m)

Frequency(MHz)

Time(10ns/DIV.)

Time(100ns/DIV.)