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SRM6220 902-928 MHz
License-Free Frequency Hopping Spread Spectrum Ethernet Radio Modem
Contact Data-Linc Group for the latest updates to Specifications
Scope
The work under this section includes the labor, materials, equipment and supervision for furnishing
spread spectrum radio modems as indicated on product drawings and specification sheets.
Submittals
Provide shop drawings and product data for furnished equipment.
Provide operation and configuration manuals in accordance with Section, OPERATION AND MAINTENANCE
MANUALS.
Manufacturer
The radio modems shall be Spread Spectrum Frequency Hopping license-free wireless radio modems as supplied by the Data-Linc Group or pre-approved equal.
Unitary Responsibility
To unify responsibility for proper operation of the spread spectrum radio modems, it is the intent of
these Engineering Specifications that all components shall be furnished by a single supplier.
General
All radios shall have the capacity to operate using Ethernet with serial tunneling.
All radio modems supplied must be FCC approved under article 15. Each radio modem shall be
capable of store and forward data routing and support the application protocol communication.
All radio modems shall be license-free frequency hopping spread spectrum radio modems.
All radio modems shall operate in the 902-928 MHz Spread Spectrum band.
All radio modems shall not require FCC site license. All radio modems shall have FCC equipment authorization as a FCC Part 15-Subclass C.
All radio modems shall have the capability to transmit 25 miles (40 km) with line of site using omni
directional antenna, farther with the use of Repeaters.
All radio modems shall be factory or user configurable via a personal computer with the Microsoft Windows operating system and Data-Linc Group SetLinc software. Opening the modem enclosure
to change configuration settings is not acceptable.
All radios shall have the ability to read and write radio configuration settings to computer files.
All radio modems shall be configurable with SetLincTM software (included) to operate as a Master, Remote, Repeate or Repeater/Remote, and shall be capable of forwarding data packets in a prescribed route to an end destination. Each Master station and its assigned Remote units shall RF communicate using unique hopping codes to permite non-interfering operation with other Master/ Remote systems. Up to fifteen (15) separate radio systems shall operate simultaneously in the same location without interference.
All radio internal PC boards including the RF section, modem section and diagnostic sections must
be enclosed in a single metal housing to eliminate interference with other electronic equipment.
Radio modem housing shall be stand-alone or DIN rail mountable.
Communications Requirements
All radio modems shall have a 10BaseT straight and crossover CAT5 ports.
All radio modems shall have Serial-Linc connections via RS232 and RS485 supporting serial data tunneling
via UDP or TCPIP, modbus TCP/IP to modbus RTU, and Ethernet/IP to DF1 conversion.
All unit configuration will be performed using SetLinc software via Ethernet or Serial-Linc ports.
All radios will have a dedicated serial port for diagnositcs.
All radio modems shall communicate using RF data modulation at GFSK 144 Kbps or 188 Kbps.
All radio modems shall have an effective data throughput of up to 110 Kbps.
All radio modems shall use 112 distinct channels in the 902 to 928 MHz band.
All modems shall have error check ing utilizing a CRC 32 bit error checking.
All radios shall provide secure communication using proprietary wireless technology and data encryption
All radio modems shall be capable of providing point-to-point, multi-point operation.
External antennas shall be capable of being mounted up to two hundred fifty (250') feet (76 meters) from radio modem.
Electrical
10 to 28 VDC; 12 VDC wall mounted transformer.
Power connection shall be via a latching screw terminal block with external ground connection.
Transmit power shall be 650 mA @ 12 VDC @ 1 watt.
Receive current shall be 100 mA @ 12 VDC.
Idle current shall be 65 mA @ 12 VDC.
Radios shall have the following indicators visible on the Outside surface: P (Power, red), RF L (RF Link, amber), I (RF In, green), O (RF Out, yellow), LAN L (LAN Link, green), LAN A (LAN Activity, yellow), and M1/M2 (Mode, yellow/red)
Radios shall have 1W maximum (10 field programmable steps from 0.1 to 1W) output power (+30 dBm).
Radios shall provide a typical response time of 5 to 15 ms.
Receiver
Sensitivity shall be -110 dBm @ 10-4 raw BER;
-108 dBm @ 10-6 raw BER
Selectivity shall be 40 dB @ FC ± 230 KHz;
60 dB @ FC ± 460KHz
System gain shall be 138 dB.
Operating Environment
Radio shall be rated for NEMA 1 environments.
Radio shall operate over a range of -40° to +167°F (-40° to +75°C).
Manufacturer
The Spread Spectrum Ethernet Radio Modem shall be SRM6220 as supplied by Data-Linc Group.
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