Kipp&Zonen COMBILOG Data Logger - Manual (Page 95)

make absolutely sure that the jumper clips are installed as in-
dicated, and that the bus leads or the bus termination are not
short-circuited by mistake!
10.7 Shielding
In case of increased interference we recommend to use shiel-
ded bus cables. In this case, a shielding should also be carried
out for the cables from power supply and for the signal cables.
There are varying experiences and recommendations concern-
ing the kind of shield connection. In general the shield should
be connected with the protector ground (not data ground!) at
each bus connection. If necessary the shield should be earthed
additionally several times along the course of the cable. With
smaller distances, e.g. with stub cables, the immunity from
noise often is improved if the shield is only applied to the stub
cable exit.
Figure 10.7 Earthing of the bus line shield on the COMBILOG 1022
Hardware Manual COMBILOG 1022
95
Isolierung
Schirmgeflecht zentrale Erdung Central earth in point
isolation
braided shield