Exfo QA-805 Manual do Utilizador descarregar pdf (Página 15)

Introduction

QualityAssurer 805 7

Physical Description of QA-805 Unit

Rear FRU Physical Layout

Logic Ground

Logic ground is used as reference for low voltage electronics and is

isolated from the chassis/shelf ground and 48 V power lines. For EMI/EMC

purposes, it might be needed to connect the logic ground and shelf ground

together.

To connect both grounds, a screw with a conductive metal washer is

installed in this location (GND) as shown in the following picture. To

disconnect, remove this screw.

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Exfo QA-805 Manual do Utilizador Página 15