13
Aerial Siting (continued)
Alternatively, a Vodafone mobile phone may be used to locate the point of
strongest signal. The signal strength indicator is normally a bar or line at the
side of the display on the mobile telephone. Note: The mobile phone MUST
use the Vodafone network. A mobile phone that uses a different radio net-
work will NOT show the correct signal strength.
This ‘mobile phone’ method can not provide information on the availability, sig-
nal strength and interference status of all radio Base Stations in the surround-
ing area. Use of the CS2366 Radio Test Set is recommended.
When you have identified the point of the strongest signal, make a note of this
point and use it when installing the DualCom aerial.
An optional extra CS2056 Aerial Extention lead is available. This is 5 metres
long. When used, it will reduce the signal by approx 10%. Therefore, the aerial
must be positioned to improve the signal strength by at least 10% in order to
provide any benefit.
Remember: It is always easier to find the point of strongest signal before the
equipment is fitted to a wall. Moving aerials, cables, trunking etc. after installa-
tion is wasted time and effort.
DualCom Mounting
DualCom may be mounted in a boxed power supply or other suitable case. The
CS1520 and CS1530, grade 2 and 3 power supplies are ideal for this. The case
has mountings and screw retainers for a DualCom, space for 7 amp/hour battery(s)
and plenty of room for wiring.
Security
DualCom should be protected from physical assault and tampering by being
fitted inside a tamper protected enclosure forming part of the alarm system,
e.g. the Control Panel. The CS1520 or CS1530 Power Supplies are also ideal
for this.
No installation or user programming of the NVM is necessary.
See Appendix 1, Tables 30, 31 & 32 for setup options using the A & B buttons.
Contact CSL Technical Support with any programming or other queries. See
page 11.
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