Commercial In Confidence
9
1.3.3
RECEIVER
The receiver is a very low current double conversion superheterodyne with an active
balanced mixer for very good intermodulation. Careful attention to spurious response,
adjacent channel and blocking performance, makes the product ideal for crowded telemetry
channels.
1.3.4
MPU CONTROL & INTERFACE BOARD
The Microprocessor (MPU) control & interface board is the heart of the product and at the
centre is a 128K flash microprocessor that controls all the interface circuits to the radio
modules and external Input/outputs. As well as the control functions, the processor provides
DSP functionality that enables full duplex modem operation between 150 – 9600bps.
The board also contains all necessary electronic potentiometers for full remote alignment and
control, these settings and other parameters are stored within the MPU ‘s non-volatile
EEPROM.
1.3.5 SOFTWARE
The processor has 128K of flash memory from which the code is executed and EEPROM for
storing programmed parameters
.
This ensures plenty of room for future upgrades and
custom applications.
1.3.6 CUSTOM
SOFTWARE
Custom software or protocols for specific client applications, can be written and included
as PC programmable options in relatively short time scales and normally at nominal costs.
Further details can be obtained from the sales office.
1.3.7 CONTINUOUS
DEVELOPMENT
The ART series has been designed with continuous development in mind and with less than
one third of the code space currently in use, there is plenty of room for protocols such as
MODBUS & TCPIP. For additional space (should it be required) a piggy back memory board
with a further 512k is available to download new code to the processor.
The fact that the product may have been deployed in the field, before changes have been
made, makes no difference, as changes and upgrades can easily be sent over the radio link
via our secure over air programming protocol.
1.4
CHANNEL
SELECTION
The ART Series can be PC programmed with up to 80 discrete channels. Alternatively,
complete band allocations like the UK MPT1329 and MPT1411 bands can be downloaded
from the PC software, provided of course that the channels are within the products tuneable
bandwidth. Once programmed, channels can then be selected via rotary switches on the
front panel (or via the keypad on the display version) , from a PC program, via the serial port
or over the radio link.
1.5
PROGRAMMABILITY
Apart from one or two link selectable options (like single/dual antennas) , all the parameters
of the ART Series can be programmed via the serial port using either DOS or Windows
95/98 based software or over the radio link via the ART’s secure “over air programming
mode”. The individual program can be stored on disc for future use or printed.
