PT 200M, Быстрый старт

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Quick Start Manual Rev 1.0
003R-620-100
Page 13
6.5. Connecting Shields
To obtain full EMC or for RFI immunity, cable shields MUST
be connected to the earth lug on the rear of the instrument.
This figure shows the connecting cables restrained using cable
ties fastened around the cable strain relief anchors.
6.5.1. Cable Shield Connection and Earthing
•
Care should be taken when connecting shields to maximise
EMC or RFI immunity and minimise earth loops and cross-
talk (interference) between instruments.
•
For full EMC or for RFI immunity, termination of the cable
shields at the earth lug is very important. The earth lug of
the instrument must be separately connected to ground
potential via a reliable link.
•
The instrument should only be connected to earth via a single
reliable link to avoid earth loops.
•
Where each instrument is separately earthed, interconnecting
cable shields should be connected at one end only.
•
Caution: Some load cells connect the cable shield directly to
the load cell (and therefore the scale base). Connection of
the load cell cable shield in this situation may be site specific.