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the test laboratory according to DIN EN ISO<br />

17025 by DAkkS has been the first step. At<br />

that point, we were active, and it was foreseeable<br />

that such recognition would happen.<br />

Visit from BI and BIG­EU representatives<br />

The second component consists of a visit to<br />

the test-laboratory by BI and BIG-EU delegates,<br />

the <strong>BACnet</strong> Test Laboratories Acceptance<br />

Committee (BTL-AC). This visit on the<br />

premises of MBS GmbH already took place in<br />

the summer of 2011. As part of this appointment,<br />

we were able to clarify conformance<br />

with all additional requirements successfully.<br />

Round robin test<br />

The third prerequisite for recognition by the<br />

BIG-EU and BI is a Round Robin Test that<br />

must be completed successfully. A device<br />

with known bugs is submitted to all participating<br />

laboratories, to be tested for conformity<br />

Wie schätzen Sie den derzeitigen Bedarf an <strong>BACnet</strong> Konformitätsprüfungen<br />

ein?<br />

Da es immer mehr <strong>BACnet</strong> Geräte am Markt gibt, ist die Nachfrage sehr<br />

hoch. Obwohl wir erst seit einem Dreivierteljahr testen, haben uns bereits<br />

sehr viele Anfragen erreicht.<br />

Was war die größte Herausforderung bei der Akkreditierung?<br />

Die größte Herausforderung bestand für uns in der Abbildung der technischen<br />

Prüfungen auf die Prozessbeschreibungen, welche die hohen<br />

formalen Ansprüchen der Akkreditierungsstelle erfüllen mussten.<br />

Haben Sie Tipps für andere Einrichtungen, die sich als Labor für<br />

<strong>BACnet</strong> Konformitätstests akkreditieren lassen wollen?<br />

Sie sollten den Aufwand nicht unterschätzen, vor allem in zeitlicher Hinsicht.<br />

Sie sind jetzt das dritte Testlabor weltweit, das <strong>BACnet</strong> Konformitätsprüfungen<br />

anbietet. Wie wird die Vergleichbarkeit der Tests sichergestellt?<br />

Seit 2011 veranstalten BI und BIG-EU die oben beschriebenen Round-Robin-<br />

Tests, bei denen alle Labore das gleiche Gerät testen und zu vergleich baren<br />

Ergebnissen kommen müssen. Um den Dialog der Labore zu fördern, ist<br />

zusätzlich ein jährlicher Workshop zum Informationsaustausch geplant.<br />

with the <strong>BACnet</strong> standard. The test is carried<br />

out under conditions similar to those of a customer<br />

order. The test unit is subjected to a full<br />

trial. Depending on the feature set of the device,<br />

such testing takes several weeks. The<br />

test results of all laboratories are compared at<br />

the end of the experiment by the BIG-EU and<br />

BI together. While this method is time consuming,<br />

it is necessary to ensure the consistent<br />

quality of the tests in all laboratories. The<br />

Round Robin Tests are repeated for quality<br />

assurance of laboratories regularly. Participation<br />

in this Round Robin Test was completed<br />

successfully by us.<br />

5. Auditing of the employees of DAkkS<br />

The successful audit of our laboratory by two<br />

external staff of DAkkS finally took place in<br />

November 2011, the official certificate of recognition<br />

was finally delivered to us in March 2012.<br />

Dialog­der­Labore­fördern<br />

Promote­dialogue­between­laboratories<br />

Nils-Gunnar Fritz im Gespräch mit der Redaktion des <strong>BACnet</strong> <strong>Europe</strong> Journals.<br />

Nils-Gunnar Fritz in an interview with the editors of the <strong>BACnet</strong> <strong>Europe</strong> Journal.<br />

6. First <strong>BACnet</strong> tests<br />

Nils-Gunnar­Fritz<br />

Leiter des MBS Testlabors<br />

Leader of the MBS test lab<br />

MBS GmbH<br />

support@mbs-software.de<br />

www.mbs-software.de<br />

Anwendungen­Solutions<br />

The whole process of work to build a testing<br />

laboratory, thus, took well over a year to complete.<br />

Since early 2012, the MBS GmbH has<br />

now started work in their laboratory and already<br />

tested several devices with a positive result in<br />

respect of valid <strong>BACnet</strong> standard.<br />

How do you assess the current demand for <strong>BACnet</strong> conformance<br />

tests?<br />

Due to increasing number of <strong>BACnet</strong> devices on the market, there is,<br />

more than ever, a high demand. Although our tests started three-quarters<br />

of a year ago, we are already getting a lot of inquiries.<br />

What was the biggest challenge for the accreditation?<br />

Our greatest challenge has been the mapping of the technical tests on the<br />

process descriptions, which had to fulfil the high-level formal requirements of<br />

the accreditation body.<br />

Do you have tips for other organizations wishing to become<br />

accredited as a test lab for <strong>BACnet</strong> conformance tests?<br />

They should not underestimate the complexity, especially in terms of time<br />

required.<br />

You are now the third testing laboratory in the world that offers <strong>BACnet</strong><br />

conformance testing. How is the comparability of the tests ensured?<br />

Since 2011, BI and BIG-EU organize the above-described Round Robin<br />

Tests, in which all laboratories have to test the same device and have to<br />

achieve comparable results. In addition, to foster dialogue between laboratories,<br />

an annual workshop to share information is planned.<br />

<strong>BACnet</strong> <strong>Europe</strong> Journal­17­10/12 15

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