AN2321 Freescale Semiconductor / Motorola, AN2321 Datasheet - Page 34

• Manufacturer Part Number: AN2321
• Description: Designing for Board Level Electromagnetic Compatibility
• Manufacturer: Freescale Semiconductor / Motorola

AN2321/D
Immunity to
Conducted RF
Disturbances:
IEC 1000-4-6
Immunity to
Powerline Surge
Transients:
IEC 1000-4-5
Immunity-
Household
Appliances, Tools
and Similar
Equipment:
EN55104
REFERENCES
34
The purpose of this standard is to verify the EUT immunity against conducted
RF disturbances in the frequency range 9kHz to 230MHz. The EUT is
functioned and monitored in accordance with the prepared test plan while the
RF is injected onto the leads. All cables of the EUT can act as receptors of
radiated RF energy which can then appear on the cables as voltages up to
10 Vrms. This test can be difficult to perform as there are a multitude of different
networks and coupling units required.
The purpose of this test is to verify the EUT immunity to high energy surges
caused by over-voltage from switching, lightning and other similar transients.
Many equipment specifications, in particular ITE equipment, already require
compliance with this standard. This test can cause damage to the EUT so it is
best not to perform it unless the EUT has effective transient suppression in-
built.
The purpose of this standard is to verify that appliances and similar devices
have an adequate level of immunity to electromagnetic disturbances. This is a
product family standard for immunity. ESD, EFT, radiated immunity, conducted
RF, surges, voltage dips and variations are covered.
Designing for Board Level Electromagnetic Compatibility
1. System Design and Layout Techniques for Noise Reduction in
2. Determining MCU Oscillator Start-up Parameters,
3. Resetting Microcontrollers During Power Transitions,
4. Resetting MCUs, Motorola Engineering Bulletin, EB413.
5. Trends in EMC Testing of Household Appliances,
6. EMC at Component and PCB Level,
7. Printed Circuit Board Design Techniques for EMC Compliance,
Freescale Semiconductor, Inc.
For More Information On This Product,
MCU-Based Systems, Motorola Application Note, AN1259.
Motorola Application Note, AN1783.
Motorola Application Note, AN1744.
SCHAFFNER Application Note, SAN014.
Martin O’Hara, Newnes, 1998.
Mark I. Montrose, IEEE press series, 2000.
Go to: www.freescale.com
MOTOROLA