[time-freq] Reflock 2
Merv Thomas vk6bmt at iinet.net.auWed Feb 29 09:49:29 UTC 2012
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Hi - I have a populated board that is not working. The output of the BFT92 transistor on the REF input chain - that is the input to CPLD pin 89 GCLK2 is being pulled down to about 180 mv. If I cut the trace on the board to this pin then the output from the BF92 goes up to 2.6v Seems like an internal short in the CPLD chip. The input to pin 91 GCLK3 has 2.6v on it from the BF92 in the VCXO input chain which seems correct. Does this show that the CPLD is not serviceable please? I know most of the forum comments on this subject go back some years so I am hoping that maybe Luis Cupido or someone can answer my question!!! Regards,Merv VK6BMT
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