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13
ⅴ、
The wire that from the power source to the door station and
door station to locks, the section area of which should be
bigger than 0.5mm
2
, and the length have t
★
The possible problems if the wiring does not conform to the
reques
ⅰ
. If the section area of mian line or branch line is too slim,
it may cause the indoor phones don't work when it is icked
up or hanged off,and can't unlock the gate,or the low volume
of indoor phones and things like that.
ⅱ
. If the section area of the wire that from power source to door
station and door station to electronic lock is too slim. it may
cause the indoor phone can't unlock the gate.
★
The wiring request of visible partial
：
ⅰ
. Visible partial has two electric wires, one is for the
surveillance requests (M),
the other is for the video coaxial
cable (vi). The system of video coaxial cable uses SYV75-3,
and should pay attention that the outer layer shield cann't use
as the wire to supply power, otherwise it possibly causes the
power source undulation to interfere picture
ⅱ
.The section area should be bigger than 0.5mm
2
,when the
length of
wire is less than 30M
