| Products > Test Equipment |
| Replacement for the PM9610 Prescaler for Philips PM6654 High precision Counter |
| << < (11/18) > >> |
| david69:
Thank You for Your idea. |
| nctnico:
Yes, extra stitches are necessary and put an extra via (or two) at each capacitor in the RF path to connect the capacitor to the reference plane otherwise the current will flow along the edges of the copper ground pour on the top and the circuit won't work as expected. |
| on4top:
someone has any empy pcb's available ? regards Tom |
| david69:
I placed board with prescaler in counter. I have tested 50MHz sine signal, counter starts rightly count from 45mV RMS and logaritmic detector works fine, and disable prescaler without signal. It needs some test on UHF, but I don`t have gener :( The output from AD8313 can`t be pulled to ground |
| david69:
test UHF 1GHz, works well, level sinus signal 100mV RMS. AD8313 volume to ground occurs noice, 30mV RMS signal, is good with MAR6, original PM9610 has 10mV level. Chanel A date is 120MHz, but counts up 200MHz |
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