( 3
) 、
This system is weak power system,so don ’ t use the same cable with
strong power , when it come across strong power,make sure the distance
between them is over 30cm
or
add a severance between them.
( 4
) 、
The wiring connection must be with the same color
。
Don ’ t cut off th e
grounding shielding(iron) wire.If it must be cut off because of construction,then
please reconsider after finishing the construction 。 The iron wire at the bottom
of the floor must be g rounded 。
( 5
) 、
All the connector must solder with tin
to
make sure the contact is
good.And add a thermal unit
to
protect it.
( 6
) 、
For the convenience of construction and aegis,the wiring of terminal
must connect with right number.
Wiring
Wiring
Wiring
Attentions
Attentions
Attentions
1 、 Door Station,Network Switcher and Audio & Video Switcher should use
UPS seperately.
2
、
The balance point of managing center and door station is affected by th e
lenth of cable.So you must re-adjust the balance Potentiometers
3 、 When there are more than one Audio and Video Switcher parallel
connect with one door station,there are many series of cable bus
to
Network
Module.In this condition,each cable bus can ’ t use the same electric cable,or
else it will interfere with each ot her.
4 、 There can ’ t be too long branch in 485 data bus and video bus.This
branch can cause signal reflex and data line mistake
or
two video pictures.It
will be better
to
use series connection,that ’ s the branch connector is in the
wiring terminal of each equipme nt.
5 、 The type and cross-sectional area of the wire, see table5.1.Please don ’ t
use wire with small cross-sectional area
to
instead of those wires with
big.Because the wire with big cross-sectional will enlarge the electric capacity
and assure performance of t he system