[time-nuts] Sub Pico Second Phase logger
Joseph M Gwinn
gwinn at raytheon.com
Mon Dec 15 15:25:18 UTC 2008
Bruce,
time-nuts-bounces at febo.com wrote on 12/11/2008 08:36:47 PM:
> Joe
>
> Attached is noise spectrum (1kHz and below) of AP192 with nothing
> connected to inputs.
> Sampling rate 96KSPS.
> Frequency bin equivalent noise bandwidth ~ 3Hz.
> Noise has similar spectrum to flicker noise with a noise corner of
> around 300Hz or so.
The noise floor ain't so bad, -130 dB (dBm? dbV?) at maybe 10 Hz, even if
it's 20 dB worse than at 1 KHz.
Has anyone measured the Allan Deviation?
Joe
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