2
IntroductIon
The Ness Radio Repeater (Transceiver) is an effective way to increase the range
of Ness radio transmitter devices in harsh and remote conditions.
When a valid signal is received it will automatically decode and then relay
(retransmit) the signal further to a remote unit for action.
The unit is mains powered by a plug pack and has a back up battery to allow
continued operation during mains power failures.
InstallatIon
The Ness Radio Repeater should be located in a position half way between
the furthest transmitter device and the main receiver (a Ness control panel with
radio option or Ness standalone receiver).
For best results mount the repeater vertically as this is the optimum polarisation
for the transmitters and receivers.
Radio range between the main receiver and the repeater is approx. 50m in
free air although environmental factors such as interference from other radio
devices and metallic objects needs to be taken into consideration.
The recommended maximum number of repeaters per system is 3.
Connect the plug pack and battery to activate the repeater.
operatIng Modes
Link J7 sets the Operation Mode.
Link ON: The repeater repeats all valid radio messages. (Default)
Link OFF: The repeater ignores ON, OFF and AUX signals from radio keys.
PANIC signals are still repeated.
This option provided to use in applications where duplicated
ON/OFF/AUX messages might trigger unwanted functions at the
control panel or receiver.
operatIon
The Ness Radio Repeater stores and compares the last 10 radio messages
to prevent sending duplicate messages. Mesages from encrypted devices
are treated as unique and are repeated immediately, whereas non-encrypted
identical messages will not be repeated again for a minimum of 20 seconds.
Messages are repeated at random intervals of 400m/sec ~ 1.8sec. to prevent
radio collisions with other devices or repeaters.
3
IndIcators
The front panel indicators are MAINS ON, BATTERY LOW, RADIO.
MAINS ON indicator is normally on and flashes when Mains Fail is detected.
If a Mains Fail condition persists for more than one hour, the beeper will give
several short beeps every hour until mains power is restored.
BATTERY LOW indicator is normally off and will be either on or flashing to
indicate various battery fail conditions as follows:
Fault
Battery
Is MIssIng
Battery
Is low
Battery
capacIty FaIl
Battery low
IndIcator
On
Single Flash
Double Flash
Beeper
Continuous beeps
until the battery is
connected.
Several short beeps
every hour
Several short beeps
every hour
RADIO Indicator will be on when a valid radio message has been repeated.
specIFIcatIons
SIgNALS TRANSMITTED
All signals from Ness radio devices. Link J7 prevents repeating of
ON/OFF/AUX signals
RADIO SECURITY
Encryption & Supervised operation
COMPATIBILITY
All Ness radio transmitters and receivers
MESSAgE CAPACITY
Store and repeat 10 messages
MAXIMUM NUMBER OF
REPEATERS PER SYSTEM
3
LED INDICATORS
MAINS ON
BATTERY LOW
RADIO
POWER REqUIREMENTS
17VDC plug pack supplied
BACkUP BATTERY
8.4V NiMH
STANDBY CURRENT DRAW
1mA
DIMENSIONS (H x W x D)
210 x 140 x 35 mm
RADIO FREqUENCY
303.875MHz / 868.350MHz
OUTPUT POWER
Less than 100uW PEP
