Data Modem

HIGH SPEED RADIO MODEM

RFI 9256 SERIES 3

SPREAD SPECTRUM 900MHz RADIO MODEM

MDI has vast experience in driving automation equipment without wires.
This product is ideal when cable distances are too great or not possible.

The Magic Button RFI 9256 Series 3 is (COST EFFECTIVE) and is license free high performance data radio capable of functioning in hostile RF environments with data throughput of 115 Kbps. Receiver design provides superior rejection of unwanted signals in hostile crowded spectrum

Features:

Economical
Dual RS-232 ports
Suitable for voice and data
Forward correction
ARQ is a software selectable
Air data speed 115 Kbps
In built diagnostic channel
Up to 30 Kms point to point
User friendly intuitive software
Interface speeds 110 to 115000bps
RF power up to 1 watt software selectable
Programmable I/O fo SCADA applications
Front panel indicators for RSSI, TX power and status
Can be installed and commissioned without test equipment

Applications"

Point to Multipoint Data Acquisition and Control

Intelligent built in modem can interface with virtually any standard Data logger, PLC, computer; i.e any RS232 device. In built buffers handshake with input / output devices at data speeds up to 115,000 bps and transparently move data to the other end.

Linking of local and remote RS232 serial ports

Depending upon the geography and terrain, the radio modems can communicate reliably over considerable distances. Good line of site paths from mountain top to hill can extend useful range up to 30 km. The RFI 9256 can be used as a repeater to extend the range indefinitely.

Parallel digital O/I and expansion

8 parallel digital I/O in addition to the standard RS232 serial port, are provided in the RFL 9256 model radio modems. Expansion radio interface modules (RIM) permit very large SCADA capability. For more details regarding interface parameters, contact the manufacturer.

Diagnostics Functions

The second RS 232 port can be used as a diagnostics channel for the monitoring network performance, and for additional data routing if required.

Specifications:

MODEL RFI 9256 Series 3

Physical Specs:

Dimensions 190mm L x 80mm W x 35mm H

Weight 260 grams

Construction Alodined aluminum chassis and cover, with integrated display

General Specs:

Operating Voltage 9 to 16 VDC negative ground

Operating Current

Standby mode 150mA

Transmit mode Averages 350mA

Operating temperature range -10 TO +60 deg C

Operating Humidity range Up to 95% non-condensing RH @ 50 deg C

Parameter and mode settings In Built software

Transmitter Specs:

Output Power 1mW to 1 Watt software selectable

Spurious emissions < -60 dBc

Output protection Transmitter is fully protected for any load @ full power @ 60 deg C

Receiver Specs:

Sensitivity <-108dBm for BER part 1 in 10^-4

End to end performance Better than 1 in 10^- BER for S/N 20 dB or better

Frequency range 915-928 MHz (Australia) 902-928 MHz (FCC) 921-929 MHz (NZ)

RSSI display range -110 to 115,000 bps, software selectable all modes

Data System :

RS 232 Handshaking Hardware/ software/ none software selectable

Protocol models All common variants PLCs supported including

Point/ point, point/ multipoint and Hayes modes

Interface data speed 110 to 115,000 bps, software selectable all modes