For some time I have been working on the design and implementation of a
low cost, medium performance, gpsdo/timer/counter.
Some fully functional samples will soon be available and to some extend
I'm able to analyze the performance of the gpsdo and the timer/counter.
The single shot time resolution of the counter/timer is 40 ps and with
its 10k samples/s linear regression, the performance of the
timer/counter is comparable to my best clock sources and counters so I'm
unable to assess the true performance of the counter/timer.
To overcome this measurement limitation I'm hoping to find 1 or 2
persons, preferably from Europe, willing to help me with measurements
and other experiments.
Important prerequisites for adding value are:
- Availability of a clock source(s) with a 1s ADEV well below 5-e12 and
able to generate both low frequency (such as 1 or 100Hz) and high
frequency (such as 10 MHz or up to 6GHz) test or reference clocks
- For comparison a timer/counter with 20 ps or better time resolution
with resolution enhancement and a gate time at least in the 10ms to 10 s
range.
- For evaluation of the limited performance GPSDO (1s ADEV is about
1e-10) , a clear sky view active puck or better GPS antenna (single band)
- Willing to do firmware updates when new software is available and
occasional assist with specific testing requests and provide feedback on
the user interface and other usability aspects.
- Interested to experiment with a new test device and communicate with a
limited group of other beta testers.
If you are willing to help, please reply only to my email address (see
cc:) (for sure not to the time-nuts list) listing (some of) the
equipment you plan to use for testing.
If selected, you will receive in a couple of weeks or months one sample
of the gpsdo/timer/counter, which you may keep free of charge after the
testing, and instructions on how to provide feedback.
If, after receiving the sample, you appear to have no time to
contribute, I will kindly request you to return the sample on short
notice so it can be send to someone else as only limited amount of
samples will be available
Erik.
For some time I have been working on the design and implementation of a
low cost, medium performance, gpsdo/timer/counter.
Some fully functional samples will soon be available and to some extend
I'm able to analyze the performance of the gpsdo and the timer/counter.
The single shot time resolution of the counter/timer is 40 ps and with
its 10k samples/s linear regression, the performance of the
timer/counter is comparable to my best clock sources and counters so I'm
unable to assess the true performance of the counter/timer.
To overcome this measurement limitation I'm hoping to find 1 or 2
persons, preferably from Europe, willing to help me with measurements
and other experiments.
Important prerequisites for adding value are:
- Availability of a clock source(s) with a 1s ADEV well below 5-e12 and
able to generate both low frequency (such as 1 or 100Hz) and high
frequency (such as 10 MHz or up to 6GHz) test or reference clocks
- For comparison a timer/counter with 20 ps or better time resolution
with resolution enhancement and a gate time at least in the 10ms to 10 s
range.
- For evaluation of the limited performance GPSDO (1s ADEV is about
1e-10) , a clear sky view active puck or better GPS antenna (single band)
- Willing to do firmware updates when new software is available and
occasional assist with specific testing requests and provide feedback on
the user interface and other usability aspects.
- Interested to experiment with a new test device and communicate with a
limited group of other beta testers.
If you are willing to help, please reply only to my email address (see
cc:) (for sure not to the time-nuts list) listing (some of) the
equipment you plan to use for testing.
If selected, you will receive in a couple of weeks or months one sample
of the gpsdo/timer/counter, which you may keep free of charge after the
testing, and instructions on how to provide feedback.
If, after receiving the sample, you appear to have no time to
contribute, I will kindly request you to return the sample on short
notice so it can be send to someone else as only limited amount of
samples will be available
Erik.
