Roseman Engineering RF-14 WAF Unit High Power 915 MHz-RPC-RF-14 User Manual MAXIMUS FuelFocus System

Roseman Engineering Ltd. WAF Unit High Power 915 MHz-RPC-RF-14 MAXIMUS FuelFocus System

Users Manual

Kiryat Atidim P.O.Box 58181 Tel-Aviv 61580, Israel. Tel: 972-3-5731801 Fax: 972-3-5731807 http://www.roseman.co.il WAF - High Power RFC-RF-41 Installation Guide The WAF (Wireless Automated Fueling) Unit is a transmitter that in conjunction with the Vehicle Identification Sox (VIS) enables to identify the vehicle automatically s connected to the antenna via ina RF module The single anten. on the fuel Island 485 with a Separate ground connection-short COAX cable and to the CPU via RS General description The EUT is a Medium power 24dBm Output FHSS transceiver module operating at the ISM frequency band 902-928 Mhz And utilize a master transmitter in a master-slave network. The modem has an External antenna. The modem is being used as a master in a station controller. The environment is a fuel station.
Kiryat Atidim P.O.Box 58181 Tel-Aviv 61580, Israel. Tel: 972-3-5731801 Fax: 972-3-5731807 http://www.roseman.co.il Technical description The device is a complete RF transceiver, it has its own reference oscillator and permanently attached antenna. The only connectors are RJ-45 for data signal and power feed and Grounding terminal. The data inputs are buffered. The EUT operates with DC voltage of 9 to 30 Vdc. Current consumption is maximum 150 mA. When the transceiver transmits a frame with different frequency every 380 mSEC, the frequency is changed on a predetermined, pseudo random pattern. There are 51 different frequencies. The occupancy time on any frequency is 380 mSEC. The cycle period is 51*380msec which is 19.38 second. The transmission frame is divided to 19 time slots 20 mSEC each. The second and the last slot are not used. The first time slot is used for one beacon transmission of 5.8 mSEC and a command of up to 7 mSEC. The other active time slots contain only the beacon and leave the slot open for the response. This means that the maximum Tx on time is 17*5.8 + 7 = 106 mSEC, which is 28% duty cycle. The user may send data to the module only during the last time slot. The module signals this time slot by outputting low level at the TXFLAG output. The data is transferred to or from the transceiver by serial communication with baud rate of 28800. The transceiver includes a CPU. The CPU is a buffer for the data inputs. It receives the data from the user at any time and sends it at the correct time slot to the transceiver. The module transceiver has its own RF shield and cable dipole antenna without connector. The output power is constant 24 dBm.
Kiryat Atidim P.O.Box 58181 Tel-Aviv 61580, Israel. Tel: 972-3-5731801 Fax: 972-3-5731807 http://www.roseman.co.il FCC Compliance Statement: This device has been tested and found to comply with the limits for a Class B digital device, pursuant to FCC Part 15, sub-part C of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in residential installations. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio and television reception. However, there is no guarantee that interference will not occur in a particular installation. If this device does cause such interference, which can be verified by turning the device off and on, the user is encouraged to eliminate the interference by one or more of the following measures: – Re-orient or re-locate the receiving antenna. – Increase the distance between the device and the receiver. – Connect the device to an outlet on a circuit different from the one that supplies power to the receiver. – Consult the dealer or an experienced radio/TV technician. WARNING! Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of human body.
Kiryat Atidim P.O.Box 58181 Tel-Aviv 61580, Israel. Tel: 972-3-5731801 Fax: 972-3-5731807 http://www.roseman.co.il INSTALLATION REMARKS:  The WAF unit with the Antenna must be installed more than 2m (80") above the ground.  The WAF unit must be installed at list 1m (40") from any metal material.  The WAF unit can be installed in any plastic enclosure, the Antenna must be placed in a vertical position, fixed with plastic holders:
Kiryat Atidim P.O.Box 58181 Tel-Aviv 61580, Israel. Tel: 972-3-5731801 Fax: 972-3-5731807 http://www.roseman.co.il

Navigation menu