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

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