FM Analysis > General Discussion

1GHz Freq Counter

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Hartmut:
I have checked my counter: broken prescaler, not divides by 256
dp-led defective in the display.

Jan:
The U664B divides by 64 but you need a prescaler of 256 (like SAB6456 or U813BS).

Alternatively you may use U664B but there must be another divider by 4 present on the PIC input (this may be based on some 74xx logic circuit). This will result in total division by 256.

Hartmut:
Hello!

Thanks for the advice. I have bought a U813 BS SI and now the counter is working properly. I need to change the display still does not work because of the DP. Thanks again for the instructions. I wish all users a Merry Christmas.

Hartmut

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