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Nemko USA, Inc. 

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The OATS normalized site attenuation characteristics are verified for compliance every year. Registration of 
the OATS are on file with the Federal Communications Commission, under Registration Number 90579, and 
are also registered with Industry Canada under Site Numbers 2040B-1 and 2040B-2. 

 

 

 
Nemko USA, Inc. is accredited to ISO/IEC 17025 by the National Voluntary Laboratory Accreditation Program 
(NVLAP) for Electromagnetic Compatibility and Telecommunications testing. Part of the accreditation process 
involves the demonstration of competence in various test methods. 
 
Prior to the beginning of work, Nemko personnel work with their clients to ensure the proper test standards and 
test methods are utilized. Applicable tests and the minimum criteria for a pass condition are listed in the 
administrative section of this report. 

 
 

 
The harmonized documents published for Electromagnetic compatibility and Radio spectrum Matters (ERM); 
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 1: Common technical 
requirements are EN 301 489-1. The applicable tests and the minimum criteria for a pass condition that are 
listed in the administrative section of this report are taken from these standards. 
 
Digital devices sold in Canada are required to comply with the Interference Causing Equipment Standard for 
Digital Apparatus, ICES-003, Issue 4. These test methods and limits are specified in the Canadian Standards 
Association’s Standard CAN/CSA-CISPR 22-02 and are “essentially equivalent” with the CISPR 22 
(EN55022) rules for unintentional radiators per EMCAB-3, Issue 4 (December 2005). No additional testing is 
required for compliance to ICES-003. 

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1.  Test Laboratory 
2.  AC Power for Peripheral Devices (120V, 60 cycles, single phase) 
3.  Non-Conducting tables 80 cm above ground plane 
4.  EUT 
5.  Support audio source for audio link 
 

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For quality assurance of ongoing productions to comply with RFI interference limits, CISPR 22 Clause 7 
stipulates a statistical sampling procedure. In summary, this rule states that the manufacturer should ensure 80% 
of the units must be in compliance with an 80% confidence level. Refer to CISPR 22, Clause 7 for a detailed 
description of the sampling procedure. 
 
 

 
EN 55022 specifies the general configuration of the EUT and associated equipment, as well as the test platform 
for conducted emissions testing. Tabletop

 

devices are placed on a non-conducting surface 80 centimeters above 

the ground plane and 40 centimeters from a vertical ground plane wall. The EUT was powered via an Artificial 
Mains Network (AMN). Both quasi-peak and average detector measurement modes are used. If however, the 
average limit is met while using a quasi-peak detector, the test unit is deemed to meet both the limits, and 
measurement with the average detector receiver is unnecessary. The quasi-peak and average emission levels are 
then recorded and compared to the applicable EN 55022 limits to determine compliance. 

 
 

 
When performing all testing of equipment, the actual emissions of the EUT are segregated from ambient signals 
present within the laboratory or the open-field test range. Preliminary testing is performed to ensure that 
ambient signals are sufficiently low to allow for proper observation of the emissions from the EUT. Ambient 
signals within the laboratory are compared to those noted at the nearby open-field site to discriminate between 
signals produced from the EUT and ambient signals. In the event that a significant emission is produced by the 
EUT at a frequency that is also demonstrating significant ambient signals, the spectrum analyzer is placed in the 
peak mode, the bandwidth is narrowed and the EUT's signal is centered on the analyzer. The scan width is 
expanded to 50 kHz while monitoring the audio to ensure that only the EUT signal is present, the analyzer is 
switched to quasi-peak mode, and the level of the EUT signal is recorded.