Rooster CW Transceiver Rev3
Page 8 of 26
22
nd
Nov 2023
Now we can perform the ‘Buzz’ test
With the headphones connected, touch the board with a metal screw driver on Pin 5 of the
position for U2. If you touch the shaft of the screw driver you should hear a loud buzz in the
headphones. Repeat the test but this time touch pin 4 of the U2 position
You may find that Pin 5 produces a louder Buzz than Pin 4.
This tests the audio and filter section of the board.
Pin 5 Buzz Test
Pin 4 Buzz Test
Summary of Contents for Bassinet
Page 22: ...Rooster CW Transceiver Rev3 Page 22 of 26 22nd Nov 2023 Circuit Diagrams...
Page 23: ...Rooster CW Transceiver Rev3 Page 23 of 26 22nd Nov 2023...
Page 24: ...Rooster CW Transceiver Rev3 Page 24 of 26 22nd Nov 2023...
Page 25: ...Rooster CW Transceiver Rev3 Page 25 of 26 22nd Nov 2023 Board Layout...