SWEEP GENERATOR APPLICATION PAGE
      Last Updated Wednesday 7th November 07             		 


      The above Picture shows the complete SWEEP KIT1. Please Note the above picture does not show the EC12E encoder which is covered by the knob, but is included. Ribbon cable is not included in the Kit, as we do not keep it in stock..

       

      WHAT WILL THE DDS & SWEEP GEN SOFTWARE ALLOW YOU TO DO?

      PLEASE NOTE:THE PIC ASM OR HEX SOFTWARE IS NOT SUPPLIED WITH THE KITS OR AVAILABLE. WE ONLY SUPPLY PRE PROGRAMMED PIC CHIPS.

      Refer to the Software Notes for more detailed information & Use, Download the Sweep Readme document.

      The Software is designed to be used for a simple signal generator, but also has an inbuilt sweep function & with the addition of the Power Head Kit can also measure RF Power. Standard functions are Frequency Tuning, Step Size, Calibrate, Memory, Sweep Direction, Sweep Start Stop, Sweep speed, Fast Sweep, VFO/Sweep mode. 

      With the addition of a Power Head Kit, it can also measure RF power in dBm, Watts, & Volts.

      The software does not allow for any display offset or Transceiver Radio functions, as it has been designed to make a useful piece of test equipment. A DDS suitable for building a Transceiver is the DDS Kits 1 &2.

      BASIC SOFTWARE SPECIFICATIONS

      1/ Frequency range programmable from a minimum frequency of 1Hz, to a Maximum output frequency of 60MHz, ( Using a Osc4 30MHz osc module & DDS x6 multiplier ).

      2/ Variable Rate Tuning & Adjustable Step Size 1Hz, 10Hz, 100Hz, 1kHz, 10kHz, 100kHz, 1MHz, 10MHz, 100MHz, 1GHz etc

      3/ Programmed to use a low cost Mechanical Rotary Encoder.

      4/ Software fine tuning of the Reference oscillator frequency.

      5/ Programmable for various Reference oscillator frequencies & DDS x1 or x6 Multiplier.

      6/ Up to 11 Sweep Generator Memories can be programmed, ( Including start & finish frequency, & sweep rate ).

      7/ There are two Sweep modes Slow & fast, in each there are 10 sweep speeds.

      Slow sweep mode.

      0 10 Hz per sec 5 Hz per step every 1/2 sec    
      1 30 Hz per sec 15 Hz per step every 1/2 sec    
      2 100 Hz per sec 25 Hz per step every 1/4 sec    
      3 300 Hz per sec 75 Hz per step every 1/4 sec    
      4 1 KHz per sec 125 Hz per step every 1/8 sec    
      5 3 KHz per sec 375 Hz per step every 1/8 sec    
      6 10 KHz per sec 1.25 KHz per step every 1/8 sec    
      7 30 KHz per sec 3.75 KHz per step every 1/8 sec    
      8 50 KHz per sec 6.25 KHz per step every 1/8 sec    
      9 67 KHz per sec 8.20 KHz per step every 1/8 sec    

      Fast sweep mode.

      0 12 Hz per sec 50 Hz per step every Step Every 4.096mS    
      1 37 Hz per sec 150 Hz per step every Step Every 4.096mS    
      2 60 Hz per sec 250 Hz per step every Step Every 4.096mS    
      3 180 Hz per sec 750 Hz per step every Step Every 4.096mS    
      4 300 KHz per sec 1250 Hz per step every Step Every 4.096mS    
      5 1 MHz per sec 3750 Hz per step every Step Every 4.096mS    
      6 3 MHz per sec 12.5 KHz per step every Step Every 4.096mS    
      7 9 MHz per sec 37.5 KHz per step every Step Every 4.096mS    
      8 15 MHz per sec 62.5 KHz per step every Step Every 4.096mS    
      9 20 MHz per sec 82.0 KHz per step every Step Every 4.096mS    

      8/ Memorises the last frequency on power up.

      7/ Calibration menu to program optional Power Head Kits.

      8/ Programmable menu to set for when using an input attenuator or amplifier on the Power Head.

      Refer to the Software Notes for more detailed information & Use, Download the Sweep Readme document.

       

       


      The Sweep Generator Kit above uses Takachi Aluminium Box ( 150x100x120mm ) RS Components 401-8982.
      The front panel was cut out using a nibbling tool & filed with a very fine metal file.

      PARTS LIST 1.

      1 x Power Switch ( FARNELL )
      1 x 16x 2 LCD Display ( LCD1 )
      1 x Knob 29mm suit 6mm shaft ( KNOB1 )
      1 x 4 x 4 Keypad ( KEYPAD2 )

      		 1 x SMA Socket ( SMA17 )
      1 x 4 Pin Mini XLR Chassis Plug       ( MXCM4 )
      1 x 4 Pin Mini XLR Line Socket ( MXLF4 )

      FOR KITS REFER TO THE DDS KIT PAGE

      PARTS LIST 2.

      1 x EME85 DDS Kit ( EME85 KIT )
      1 x 70MHz LPF Kit ( 70MHz KIT )
      1 x 30MHz Oscillator Module ( OSC4 )
      1 x Control Board Kit ( EME159 KIT )
      1 x Connector KIT ( EME159 CONN )
      1 x SMA PCB Socket ( SMA09 )

      12x Bolt Panhead M3x6mm ( BOLT04 )
      4 x Bolt Countersunk M3x6mm ( BOLT06 )
      4 x M3 Star Washer ( WASHER01 )
      1 x SMA R/Angle Plug ( SMA17 )
      0.5 x ft RG316 Cable ( RG316 )
      8 x 10mm Metal Spacers ( SPACER03 )

      FOR KITS REFER TO THE DDS KIT PAGE

      POWER HEADS COMING SOON.....

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