Re: [time-nuts] Seeking Toyocom or NDK through hole oscillator information
On 6/14/18 4:27 AM, Tim Shoppa wrote: Quoting Wikipedia; 16.368 MHz is 16 times the 1.023 MHz C/A GPS signal chipping rate; multiplied by 96.25 to get the 1575.42 MHz L1 frequency and multiplied by 75 to get the 1227.60 MHz L2 frequency. Possibly something Trimble significant with the 16.368 MHz frequency that I'm not yet aware of... if anyone would care to speculate, please do. A typical direct sampling receiver would sample the RF at 16.368, and that puts the L1 received signal nicely at fs/4. The P code would overlap the sampling bandwidth of 8.184 MHz, but the C/A code fits well within that range. And, since it's not at "zero", any doppler just moves it from the center, but it's still "positive" frequency. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Seeking Toyocom or NDK through hole oscillator information
Quoting Wikipedia; 16.368 MHz is 16 times the 1.023 MHz C/A GPS signal chipping rate; multiplied by 96.25 to get the 1575.42 MHz L1 frequency and multiplied by 75 to get the 1227.60 MHz L2 frequency. > On Jun 14, 2018, at 1:53 AM, skipp isaham via time-nuts > wrote: > > Seeking Toyocom or NDK through hole oscillator information > > > Hello again to the group, > > I'm looking for a Data Sheet or information that would provide > the connection information for a (Epson) Toyocom TCO-519 or NDK > PIA3003A Oscillator module, both are through hole mounting. > > Both appear to be a reasonably conventional, but now a discontinued > through-hole part, but I'm unable to find any same or similar data > sheet information that would tell me how to use connect them. Both > are 16.368 MHz > > Appearance wise, they are both an approx 1 inch square, 3/8" high, > silver metal covered oscillator module. Five through hole mounting > connection leads on the bottom, one in each corner, the fifth lead > is centered along the side between two corners. > > A data sheet or even just the generic connection information with > an idea of what each pin does would be wonderful. A few of these > arrived in a parts donation box hand labeled "Trimble Development". > > Possibly something Trimble significant with the 16.368 MHz > frequency that I'm not yet aware of... if anyone would care > to speculate, please do. > > > Thank you in advance for your replies > > cheers, > skipp > > direct Email skipp...@yahoo.com > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] Seeking Toyocom or NDK through hole oscillator information
Seeking Toyocom or NDK through hole oscillator information Hello again to the group, I'm looking for a Data Sheet or information that would provide the connection information for a (Epson) Toyocom TCO-519 or NDK PIA3003A Oscillator module, both are through hole mounting. Both appear to be a reasonably conventional, but now a discontinued through-hole part, but I'm unable to find any same or similar data sheet information that would tell me how to use connect them. Both are 16.368 MHz Appearance wise, they are both an approx 1 inch square, 3/8" high, silver metal covered oscillator module. Five through hole mounting connection leads on the bottom, one in each corner, the fifth lead is centered along the side between two corners. A data sheet or even just the generic connection information with an idea of what each pin does would be wonderful. A few of these arrived in a parts donation box hand labeled "Trimble Development". Possibly something Trimble significant with the 16.368 MHz frequency that I'm not yet aware of... if anyone would care to speculate, please do. Thank you in advance for your replies cheers, skipp direct Email skipp...@yahoo.com ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
