User`s guide
EXPANSION PORT MOUNTING
27
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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 the length of data cables exceeds 1,5 m
or in the event of, the cable leads towards the switch - board, we
recommend installing over - voltage protectors (surge suppressors),
with data cables they mustn't carry cables with reticular tension
~ 230 V/50 Hz,
all signals to sensors must be twisted pairs.
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sufficient space must be left before individual connectors for handling of cables,
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for correct function of the modem we recommend to use in the switch-board earth-
bonding distribution frame for grounding of power supply of modem, data cables and
antenna,