Hello,
A recently published paper might be of interest to the time-nuts community. We
studied how well an unmodified commercial software defined radio (SDR)
device/firmware could serve in comparing high-performance oscillators and
atomic clocks. Though we chose to study the USRP platform, the d
Bob Camp:
> In many DMTD (and single mixer) systems, a lowpass and high pass filter are
> applied to the signal coming out of the mixer.
> This is done to improve the zero crossing detection. It also effectively
> reduces the “pre detection” bandwidth. My understanding
> of the setup in your pap
Jim Lux:
If you pick the right USRP models, you can lock the sampling clocks
together or distribute the clock. I don't know if that distribution is
sufficiently high quality for time-nuts kinds of applications.
A bit of extra detail related to this but not reported in print... The N210 has
two m
Atilla Kinali:
Yes, the spec'ed SNR of the ADS62P44 is 74dBFS (typ) while the LTC2216
is spec'ed with 81dBFS (typ). Additionally, the input amplitudes in
Sherman and Jördens experiments were kept around half scale, which is
another -6dB in SNR. There is another ~15dB in difference, but I currently
On Jul 29, 2016, at 5:14 PM, Kevin Rosenberg wrote:
I had a question about your experience. You mentioned using a input
signal near the maximum of the USRP’s ADC to get the best SNR. I
reviewed the schematics and application notes. I found a maximum Vpp
mentioned of 3.3V. I was wondering what vol
