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Signal connections
To preserve RF screening integrity the signal connections to the amplifier should be made
using good quality coaxial cable and connectors. This is particularly important with DTT
to minimise the ingress of impulsive electrical interference. The use of cable benchmarked
under the CAI scheme is recommended.
Crimp F connectors, used in accordance with the manufacturers instructions, will give
the best results. The importance of achieving sound braid connections cannot be over-
stressed. Connectors should be tightened with a spanner, not left finger-tight.
Mains power supply
Any fixed wiring installed to supply power for this amplifier should comply with BS 7671
(IEE wiring regulations) and, where relevant, Part P of the building regulations.
System equipotential bonding
A bonding terminal is provided on the amplifier for use where necessary (see Fig. 3).
Distribution systems supplying signals to more than one household should comply with
the safety requirements of BS EN 60728-11. This effectively requires earthed equipotential
bonding of the system. (The use of isolated outlet plates is no longer recommended since
they compromise screening integrity and allow ingress of interference.)
Fig.1
proAMP108U basic aerial amplifier installation.
Fig.2
proAMP108U application with distribution of set-top box outputs and showing
(optional) use of 2-way power unit.
Note: dish and SCART connections omitted for clarity.
Earth terminal
proAMP108U
VCR
(optional)
set-top box
Outlets
proOUT11C
IN
ANT IN
RF OUT-2
(see text)
RF OUT-1
RF OUT
ANT IN
*Power unit
proPSU11F
proAMP108U
IN
Outlets
proOUT11C
IN
Powering options
Power can be supplied to the amplifier by any of the following three options:
n
a
PRO
ception proPSU11F or proPSU12F 12 V power unit connected in any of the
output lines. (Use of the proPSU12F 2-way power unit enables an extra outlet point to
be installed.)
n
a local AC/DC power adaptor capable of providing 5 - 15 V at 25 mA (such as the
PRO
ception proPSA123) connected to the DC power port. The adaptor need not be
regulated and needs to have a standard 2.1 mm DC connector with the correct polarity
(centre pin +ve);
n
one or more DVB-T (Freeview
) receiver(s) of a type which can provide 5 V DC power
from the antenna socket. A separate power unit will not be required if this type of
receiver is in use on any one or more of the outputs, provided that one can be left
connected continuously to the mains supply. The power supply will need to be activated
using the receivers setup menu (refer to receiver instructions).
A green LED indicator on the amplifier confirms that power is being received.
Location and fixing
Choose a location for the amplifier which is dry and not subject to prolonged ambient
temperature conditions of less than -10 °C or more than + 40 °C. The unit should be
fixed as illustrated in Figure 3.
*5-15 V mains
power adaptor
*alternative power supply options
DC power port
PRO
ception
PRO
ception
*Power unit
proPSU12F
IN
*alternative power supply options
*5-15 V mains
power adaptor
Fig.3
Fixing the amplifier.
