CDA70 MODEM DESCRIPTION
21
For compliance of EN 60439 - 1 + A1 specification it is necessary observe next
assembly of the modem to the switch - board:
•
round antenna we recommend to observe a distance of 6 cm from cables and metal
surfaces on every side according to the next picture due to the elimination
of interference, while using an external antenna except for the switch-board it is
necessary to fit a lightening conductor,
•
for single cables we recommend to bind the bunch according to the following picture,
for this use we recommend:
length of the bunch (combination of power supply and data cables) can
be maximum 1,5 m, if length of data cables exceeds 1,5 m or in the
event of, the cable leads towards the switch - board, we recommend to
use fit over – voltage protectors (surge suppressors),
with data cables they mustn't carry cable with reticular tension
~ 230 V/50 Hz,
all signals to sensors must be twisted pair.
Содержание CDA 70
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