currently working on a Symmetricom GPSDO with Furuno Board.
unit had been on for several days, but it won't find any satelites.
PPS and 10MHz outputs are working, so the OCXO is ok.
after reading ( part of ) this thread, i tried some commands with putty and the serial connection.
did factory reset and read out the status.
noticed that my antenna voltage is about 190mV, so started there with further analysis.
( all other screenshots in this thread show voltages of about 5V )
put the antenna to my probe on the scope and got attached readout.
there are spikes, 10msec long and about 10V every 250msec.
for the rest a flat line.
is this normal behaviour, or is there something wrong with the antenna supply ?
how to proceed?