Certificate Of Compliance

HBCS Report # EMC_12003 Page 32 of 36
9. Magnetic Immunity
Test
Requirement(s):
EN 61000-4-8: 1993
(A1:2001)
Test Engineer(s): N/A
Test Results: None Test Date(s): N/A
Test Procedures:
A Magnetic Immunity test was performed using the mode of operation and configuration noted within
this report . The test was run per the procedures given in EN 61000-4-8.
The EUT and any associated equipment that is part of the test set up, and I/O cables is placed on top of
10-cm spacers above the ground plane. The cables (where applicable) must be positioned such that at
least 1 meter of their length is exposed to the magnetic field. The cables may have to be serpentine on
the spacers to accomplish this. Remotely located devices (such as ethernet host PC’s) must be located
at a minimum distance of 1 meter (39.4 inches) away from the induction coil. The EUT will be subjected
by using an induction coil of standard dimension 1m x 1m as specified in the standard.
There are two separate loops used to perform the magnetic field immunity test. The first is a vertical
loop that uses the Ground Reference Plane (GRP) as the bottom leg of the loop. This loop is used to
apply the "X" (passing through the sides of the EUT) and "Z" (passing through the front and back of the
EUT) components of the magnetic field to the EUT. The second is a horizontal loop that is supported
over the GRP around the EUT. This is used to apply the "Y" (passing through the top and bottom of the
EUT) component of the magnetic field to the EUT. In each case the loops must be located at least 1
meter (39.4 inches) from any magnetic material except the GRP and the EUT. It may be necessary to
remove items from the test area in order to accommodate this requirement.
The induction coil will be rotated by 90⁰ in order to expose the EUT to the test field with different
orientations.