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CE TEST REPORT
13.3 TEST PROCEDURE
a.
The EUT shall be operated within its intended climatic conditions. The temperature and relative
humidity should be recorded.
b.
This test method test can be performed without using a sell shielded enclosure. This is because the
disturbance levels applied and the geometry of the setups are not likely to radiated a high amount of
energy, especially at the lower frequencies. If under certain circumstances the radiated energy is
too high, a shielded enclosure has to be used.
c.
The test shall be performed with the test generator connected to each of the coupling and decoupling
devices in turn while the other non-excited RF-input ports of the coupling devices are terminated by a
50 ohm load resistor.
d.
Filters shall be used to prevent ( higher order or sub- ) harmonics form disturbing the EUT. A
High-Pass Filter. 100KHz, ( HPF ) may be required with the test generator.
characteristics of the Low-Pass Filters ( LPF ) shall be sufficient to suppress the harmonics down to
the immunity level required within that band. These filters shall be inserted with the test generator
before setting the test level.
e.
The frequency range is swept from 150 KHz to 230 MHz, using the signal levels established during
the setting process, and with the disturbance signal 80% amplitude modulated with a 1KHz sinewave,
pausing to adjust the RF-signal level or to switch coupling devices as necessary. The rate of sweep
shall no exceed 1.5 x 10
shall no exceed 1% of the start and thereafter 1% of the preceding frequency value.
f.
The dwell time at each frequency shall not be less than the time necessary for the EUT to be
exercised, and able to respond. Sensitive frequencies e.g. clock frequency(ies) and harmonics or
frequencies of dominant interest shall be analyzed separately.
g.
An alternative test procedure may be adopted, wherein the frequency range is swept incrementally,
with a step size not exceeding 4% of the start ad thereafter 4% of the preceding frequency value.
The test level should be at least twice the value of the specified test level.
h.
In cases of dispute, the test procedure using a step size not exceeding 1% of the start and thereafter
1% of preceding frequency value shall take precedence.
i.
Attempts should be made to fully exercise the EUT during testing, and to fully interrogate all exercise
modes selected for susceptibility.
j.
The use of special exercising programs is recommended.
k.
Testing shall be performed according to a Test Plan, which shall be included in the test report.
l.
It may be necessary to carry out some investigatory testing in order to establish some aspects of the
test plan.
Test Engineer :
SPORTON International Inc.
TEL : 886-2-2696-2468
FAX : 886-2-2696-2255
-3
decades/s. Where the frequency is swept incrementally, the step size
ROXY CHOU
Report No. : C121401
The band stop
Page Number
: 52 of 62
Issued Date
: Feb. 21, 2001
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