[time-nuts] Datum Frequency Counter
d0ct0r
time at patoka.org
Tue Feb 18 03:52:50 UTC 2014
Hello Netizens !
Recently I obtain the "GPS FC" device. Its exactly as shown on the
picture from the datasheet:
http://www.gigatest.net/datum/gps-fc-e.pdf
Now I try to test it. As far as I understood (in accordance with its
specs.), it shold generate the 10Mhz signal as its locked to Satelites.
I connected it through frequency divider (by 64) to my PC-based
oscilloscope (yes, I know, I know, its not for "nuts").
I did preliminary tests with this divider with my T-Bolt and standalone
DATUM OCXDO to make sure its working (see attached files). But that GPS
FC still shows only some noise. In the datasheet, manufacturer mentioned
about so-called "test board". Does anybody knows what is this board
exactly ? For now I just connected power through the 1 MilliHenry coil
and try to get signal from it through the divider which has 0.2nF
capacitor in its input to eliminate DC).
--
WBW,
V.P.
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