Re: [time-nuts] Thought experiment on a low cost timing board

2006-02-23 Thread Tom Van Baak
So does the basic idea make sense? More importantly can somebody opine on if it's possible to use a 1PPS to discipline an OCXO (I've seen designs to it from a 10KHz signal for sale on eBay)) - Yes, many devices, both professional and amateur, use a precise 1PPS signal to discipline Qz, Rb,

Re: [time-nuts] Thought experiment on a low cost timing board

2006-02-23 Thread Alberto di Bene
Tom Van Baak wrote: I'm curious about the 10 kHz signal. Can you send me a pointer to it? Usually 1 Hz is good enough and in practice most GPSDO use an averaging algorithm that is more akin to 0.01 Hz to 0.001 Hz. http://gpsdo.i2phd.com/ 73 Alberto I2PHD

Re: [time-nuts] Thought experiment on a low cost timing board

2006-02-23 Thread John Pettitt
Tom Van Baak wrote: I'm curious about the 10 kHz signal. Can you send me a pointer to it? Usually 1 Hz is good enough and in practice most GPSDO use an averaging algorithm that is more akin to 0.01 Hz to 0.001 Hz. /tvb See http://www.jrmiller.demon.co.uk/projects/ministd/frqstd.htm

Re: [time-nuts] Thought experiment on a low cost timing board

2006-02-23 Thread Didier Juges
Silabs has some 8051 cored chips that run at 100 MHz with close to 1 instruction/cycle. I use them (not for timing), they really are speedy. The C8051C123 runs at 100 MHz with 2 built-in DACs (and a bunch of other goodies, such as 128kB of flash, 8k of RAM, 2 x 8 input ADCs, one 8 bits/500ks/s,