AVT2820 UK

Modification of the AVT3003 set - digital frequency meter. One of the most important changes is the modification of the input circuit for the 100MHz range. The prescription U664 is used to measure higher frequencies. Inputs from both channels are switched electronically via a multiplexer. The introduction of modifications made it possible to power the meter from one voltage - it simplified the power supply. The way of displaying measurement results was also changed and the impulse counter function (rarely used) was abandoned.

The device is particularly recommended in electronic laboratories and the website

Selected parameters:

• modification of the AVT3003 frequency meter
• layout on the ATTiny 2313 processor
• two measuring inputs - range up to 100 MHz and 100 MHz - 1.3GHz
• frequency reading with improved resolution - 20 Hz on the 100 MHz range, 1 kHz on the 1.3 GHz range
• Measurement reading - 2x16 characters LCD alphanumeric display
• input track selection switch
• layout using SMD components
• power supply - 230 Vac
• programmed layout
  
  Detailed description in
  EdW 4/07