Heros tiny SCR Preselector User Manual Download Page 23

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Manual

tiny SCR PRESELECTOR

NOTES:

Heros technology Limited disclaims all liability arising from this information and its use.

It is your responsibility to ensure that your application meets with your specifications.

Information contained in this publication regarding device applications and the like is provided only for your convenience

and may be superseded by updates.

Heros technology Limited makes no representations or warranties of any kind whether express or implied, written or oral,

statutory or otherwise, related to the information, including but not limited to its condition, quality, performance,

merchantability or fitness for purpose.

Summary of Contents for tiny SCR Preselector

Page 1: ...ontrolled Radio Preselector via USB v2 0 or I2C Bus Modular 1 8MHz to 30MHz Tunable Band Pass Filter bank tiny SCR Preselector User manual Revision B September 2009 Heros Technology Ltd 2006 All right...

Page 2: ...n your projects I2C Bus or USB control modules optional Tin plated enclosure available USB control module option PC controlled through graphical user interface GUI Full speed USB v2 0 compliant Plug a...

Page 3: ...twork of low ESR RF capacitors of 1 pF 2 pF 4 pF 8 pF 16 pF 32 pF 64 pF and 128 pF are connected to the coil in serial fashion emulating the variable capacitor needed to tune the series resonant circu...

Page 4: ...on your radio project due the simple implementation of the I2C protocol on any microcontroller It is based on the well know PCF8575 remote 16 bit I O expander for I2C Bus Two power drivers ULN 2803A...

Page 5: ...sible On the other hand the large core offers a non loaded Q efficiency value exceeding 400 providing selectivity and high stop band stop band characteristic limiting the bandwidth in front of the mix...

Page 6: ...equency Notice due to the response of typical series tuned circuits the attenuation of the pass band filter increases with less capacity A good practice is to avoid values smaller than 50 picofarads 6...

Page 7: ...ELECTOR Another Graphic User Interface is included It incorporates the same functions that the standard GUI HEROS technology Limited 2006 All rights reserved tiny SCR Preselector working with SoftRock...

Page 8: ...llation Windows XP OS Insert the CD ROM labelled tiny SCR Preselector Software in your drive Copy the file included in the CD in your computer e g My Documents Close the program if previously was open...

Page 9: ...Manual tiny SCR PRESELECTOR Mark on Include this location and click on Browse button Mark on Install from a list or specific and click next HEROS technology Limited 2006 All rights reserved...

Page 10: ...Manual tiny SCR PRESELECTOR Select the file Driver located inside the file copied in your computer and click OK and Next Installing the USB driver HEROS technology Limited 2006 All rights reserved...

Page 16: ...reselector Output PIC 18F2455 Control module Full speed USB v2 0 Plug and Play Windows 2K XP Vista 7 OS Control from PC Service Coonnector Power Drivers Gas Discharge Tube Antenna Input 8 bits 256pf v...

Page 17: ...t a Broadcast Band rejection filter has been connected to the input of the tiny SCR Preselector in order to remove interferences from MW stations N2PK Vector Network Analyzer My VNA program software H...

Page 23: ...our specifications Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates Heros technology Limited...