====== Electromagnetic Compatibility (EMC) Measurements of DHD modules ======
{{:emc:5620_far2.jpg?nolink&300|}}
===== General Information =====
==== Name of used standard ====
**DIN EN 55032:2022-08 (VDE 0878-32:2022-08)**
**Electromagnetic compatibility of multimedia equipment**\\
**Emission requirements (CISPR32:2015 + COR1:2016 + A1:2019)**\\

German version EN 55032:2015 + AC:2016 + A11:2020 + A1:2020, Publication date: 2022-08\\

German title: Elektromagnetische Verträglichkeit von Multimediageräten und Einrichtungen - Anforderungen an die Störaussendung (CISPR 32:2015 + COR1:2016 + A1:2019); Deutsche Fassung EN 55032:2015 + AC:2016 + A11:2020 + A1:2020\\

==== Clas­si­fi­ca­tion ====
**EN 55032**, the European harmonized standards adoption of **CISPR 32** applies to **Multimedia Equipment (MME)** and having a rated r.m.s. AC or DC supply voltage not exceeding 600 V and intended **primarily for professional use**, including equipment that falls within the scope of CISPR 22 and CISPR 13. Procedures are given for the laboratory measurement (on site testing excluded) of the levels of spurious signals generated by the MME and limits are specified within the standard for protection of radio services in industrial, commercial or residential environments.\\

The inter­na­tional stan­dard **EN 55032** divides equip­ment, devices and appa­ra­tus in two classes, depend­ing on the type of end using envi­ron­ment:\\

**Class A** equip­ment that may not offer ade­quate pro­tec­tion to broad­cast ser­vices within a res­i­den­tial envi­ron­ment.\\
**Class B** equip­ment that offers ade­quate pro­tec­tion to broad­cast ser­vices in res­i­den­tial envi­ron­ment.\\

Equip­ment intended pri­mar­ily for use in a res­i­den­tial envi­ron­ment shall meet the Class B lim­its. All **other** equip­ment shall com­ply with the **Class A** lim­its.\\ 

**Exam­ples of Mul­ti­me­dia equip­ment (MME):**\\
infor­ma­tion tech­nol­ogy equip­ment– equip­ment hav­ing a pri­mary func­tion of entry, stor­age, dis­play, retrieval, trans­mis­sion, pro­cess­ing, switch­ing, or con­trol of data and/or telecom­mu­ni­ca­tion mes­sages and which may be equipped with one or more ports typ­i­cally for infor­ma­tion trans­fer. (Office machines, elec­tronic busi­ness equip­ment and telecom­mu­ni­ca­tion equip­ment.)\\

  * **audio equip­ment– equip­ment which has a pri­mary func­tion of gen­er­a­tion, input**, stor­age, play, retrieval, trans­mis­sion, recep­tion, ampli­fi­ca­tion, **pro­cess­ing, switch­ing or con­trol of audio sig­nals**. (CD play­ers, receivers, audio ampli­fiers, **mix­ers**.)\\

  * video equip­ment– equip­ment which has a pri­mary func­tion of gen­er­a­tion, input, stor­age, dis­play, play, retrieval, trans­mis­sion, recep­tion, ampli­fi­ca­tion, pro­cess­ing, switch­ing, or con­trol of video sig­nals. (Video play­ers, cam­eras, TV stu­dio equip­ment.)\\
  * broad­cast receiver equip­ment– equip­ment con­tain­ing a tuner that is intended for the recep­tion of broad­cast ser­vices. (Tele­vi­sion and radio ser­vice receivers, ter­res­trial broad­cast receivers.)\\
  * satel­lite broad­cast and/or cable trans­mis­sion equip­ment\\
  * enter­tain­ment light­ing con­trol equip­ment– equip­ment gen­er­at­ing or pro­cess­ing elec­tri­cal sig­nals for con­trol­ling the inten­sity, color, nature or direc­tion of the light from a lumi­naire, where the inten­tion is to cre­ate artis­tic effects in the­atri­cal, tele­vi­sual or musi­cal pro­duc­tions and visual pre­sen­ta­tions\\
  * or com­bi­na­tions of upper men­tioned equip­ment\\

==== Require­ments ====
Con­ducted emis­sion require­ments for AC/DC mains ports, telecom­mu­ni­ca­tion ports, sig­nal ports must be sat­is­fied in fre­quency range 150kHz-30MHz.\\

Radi­ated emis­sion require­ments must be sat­is­fied in fre­quency range:\\
|30MHz-1GHz|if inter­nal fre­quency is up to 108MHz|
|30MHz-2GHz|if inter­nal fre­quency is up to 500MHz|
|30MHz-5GHz|if inter­nal fre­quency is up to 1GHz|
|**30MHz-6GHz**|**if inter­nal fre­quency is higher than 1GHz**|

Inter­nal fre­quency – high­est fun­da­men­tal fre­quency gen­er­ated or used within the EUT or high­est fre­quency at which it oper­ates. This also includes fre­quen­cies which are solely used within an inte­grated cir­cuit.\\

==== Measurement conditions ====
All measurements below were successfully completed for **MME Class A**. Radi­ated emis­sions were measured in the fre­quency range of **30MHz-6GHz**.\\

===== Test Reports =====
[[emc:52-1214|52-1214A/B]]\\
[[emc:52-1220|52-1220A]]\\
[[emc:52-1256|52-1256A/B]]\\
[[emc:52-5614|52-5614A/B/M]]\\
[[emc:52-5620|52-5620A/B/M]]\\
[[emc:52-5810|52-5810A/M]]\\
[[emc:52-5820|52-5820A/M]]\\
[[emc:52-7520|52-7520A/52-7523A]]\\
[[emc:52-7530|52-7530A]]\\
[[emc:52-7540|52-7540A]]FIXME\\
[[emc:52-7550|52-7550A]]FIXME\\
[[emc:52-7224|52-7224A]]FIXME\\
[[emc:52-7235|52-7235A]]FIXME\\
[[emc:52-7498|52-7498A]]\\
[[emc:52-1948|52-1948B]]\\

===== Additional Information =====

==== Test site ====
[[https://ftz-leipzig.de/forschungszentrum/forschungsbereiche/emv/|EMV-Zentrum Leipzig (Forschungs- und Transferzentrum Leipzig e.V.)]]\\

==== Abbreviations ===
|AAN|{{:emc:schwarzbeck_isn_s8.pdf|Asymmetric Artificial Network}}|
|AC|Alternating Current|
|AMN|Artificial Mains Network|
|APC|Audio Power & Control ethernet port (DHD)|
|CISPR|[[wp>CISPR|Comité international spécial des perturbations radioélectriques]]|
|DC|Direct Current|
|EMC|Electromagnetic Compatibility|
|EMV|Elektromagnetische Verträglichkeit|
|EUT|Equipment Under Test|
|FAR|Fully Anechoic Room|
|MME|Multimedia Equipment|