16
Cabling Audio Systems
1)
Cabling should be Star Configuration (Topology). ie. Each Handset cable should go back
to a junction box or central cabinet and NOT looped from one Handset to the next. This is
purely for maintenance reasons.
2)
It is recommended that 1mm diameter conductors are used from the power supply to the
(+) POSITIVE and (-) NEGATIVE of the speaker unit.
3)
It is recommended that 1mm (preferably 1.5mm) diameter conductors are used for the
lock circuit.
4)
Standard BT telephone cable is recommended (0.4mm per conductor) for reasons of
higher quality audio reproduction and because the pairs are twisted thereby providing a
powerful defence against interference.
5)
Standard alarm cable can also be used although there is a greater risk of interference.
Special care must be taken to ensure clean and neat terminations.
6)
All low voltage cabling must be run totally separated from high/mains voltage cables.
Please note that far better results are achieved using thicker conductors than combinations of
thinner conductors.
Power
Power the MIHP/6 Speaker using a 12V DC power source.
Amperage draw is dependent upon consumption characteristics of the locking used, the lengths of cable runs, the number of
handsets required to switch on simultaneously etc. As a general guide, allow 1 Amp per door. If unsure, please contact Noralsy.
Standby for Audio Systems
Simply add 12V battery to 12V DC power supply.
General Wire Diameter Guidlines – per conductor
Distance
Call/Speech/Release
Metres
CA, 2, 1, 9, 6
mm
50
0.4
100
0.8
200
1.0
300
1.6
For greater distances, please contact Noralsy for advice.
1 2 3
1
2
4
5
6
3
1
2
3
1
2
4
3
1
2
3
1
2
4
5
3
1
2
3
1
2
3
View Side-On
PCB Facing Up
View Side-On
PCB Facing Up
View Side-On
PCB Facing Up
View Side-On
PCB Facing Up
1 2
1 2 3
1 2
4
3
1 2
4 5
3
1 2
4 5 6
3
1 2
4 5 6 7
3
1 2
4 5 6 7 8
3
Direction of View
1 2
1 2
4 5 6
3
Any Noralsy
Control Unit
Door Controller
Speaker Unit
Access Pass Reader/Receiver
Keypad
Call Decoder
Module
Standardisation of
Terminal Numbering
Place Noralsy unit on a flat surface with
PCB facing skywards. View terminal blocks
from the outside looking in. Terminal No. 1
is always the first on the left of every
terminal block strip.
General Information
Our policy is one of continuous product improvement, we reserve the right to change specifications and prices without notice. All information is given in good faith. No responsibility can be accepted for errors, omissions or
incorrect assumptions. Picture reproduction of products are within the limitations of both colour and black and white printing and are intended as a guide only.
Star
Topology
N.A.C.D. LIMITED
UNIT 10, AVEBURY COURT, MARK ROAD, HEMEL HEMPSTEAD, HERTS HP2 7TA
TEL:
01442 211848
FAX:
01442 212776
EMAIL:
WEB:
http//:www.nacd.co.uk
NORALSY
™
MASTERING ACCESS CONTROL
™
™
