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SL-889 HDMI 2.1 Cat-3 Cable EMI Tester
User Guide
Simplay-UG-SL889-1.1
© 2019-2020 Simplay Labs, LLC.,
17
All rights reserved. CONFIDENTIAL
EMI Limits and Testing
EMI or electromagnetic interference is the measure of the radiated RF energy that a device puts out. The SL-889 makes
measuring the amount of RF energy an HDMI cable emits easy, by providing a calibrated HDMI signal. Maximum
allowable EMI limits vary from country to country, and this tool was developed to help standardize the rf emission
measurement of cables regardless of country standard.
3.2.1.
CISPR 32 EMI Testing Standards
EMI testing per the HDMI Forum Guidelines generally follows the International Electrotechnical Commision CISPR
32:2015 standard. The comission and standard can be found at
. Please refer to the standard for
test setup, chamber set up, emission levels, test pattern, etc.
3.2.2.
HDMI Forum Cat-3 Cable EMI Testing Guidelines
The HDMI Forum has an interest in making sure cables that transmit HDMI signals comply with EMI limits of individual
countries. And because HDMI is a worldwide standard, it made sense to establish a set of EMI Guidelines for Cat-3
cables that could be adopted worldwide. For guidance to performing the radiated emissions checking per the HDMI
Forum Guidelines, please refer to the following HDMI Forum Policy:
“
Category 3 Cable Assembly EMI Testing
Policy and Process, dated
5/7/2020”
(www.hdmiforum.org)
The Forum Policy covers both technical requirements (cable placement, resolution(s), passing criteria, etc), as well as
process requirements (number of cables tested, etc.).
Figure 3.3. HDMI Forum recommended DUT cable placement inside chamber