Joe
Joe Gwinn wrote:
Bruce,
At 1:00 AM + 7/26/09, time-nuts-requ...@febo.com wrote:
Message: 3
Date: Sun, 26 Jul 2009 12:29:24 +1200
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
Subject: Re: [time-nuts] Measuring phase shift between 1 Hz DMTD
signals by I+Q processing
Joe Gwinn wrote:
Bruce,
At 1:00 AM + 7/26/09, time-nuts-requ...@febo.com wrote:
Message: 3
Date: Sun, 26 Jul 2009 12:29:24 +1200
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
Subject: Re: [time-nuts] Measuring phase shift between 1 Hz DMTD
signals by I+Q processing
To: Discussion
Bruce Griffiths wrote:
Joe
Joe Gwinn wrote:
Bruce,
At 1:00 AM + 7/26/09, time-nuts-requ...@febo.com wrote:
Message: 3
Date: Sun, 26 Jul 2009 12:29:24 +1200
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
Subject: Re: [time-nuts] Measuring phase shift between 1 Hz DMTD
It occurs to me that there is a possible alternative to the ZCD-chain
approach typical in DMTDs, if one is willing to provide two mixers
and two ADCs per channel, with a 90 degree phase offset between LO
signals provided to the mixers of a channel. The output of the four
ADCs will be a pair
Joe Gwinn wrote:
It occurs to me that there is a possible alternative to the ZCD-chain
approach typical in DMTDs, if one is willing to provide two mixers and
two ADCs per channel, with a 90 degree phase offset between LO signals
provided to the mixers of a channel. The output of the four ADCs
Joe Gwinn wrote:
Magnus,
At 4:01 PM + 7/25/09, time-nuts-requ...@febo.com wrote:
Message: 5
Date: Sat, 25 Jul 2009 16:38:23 +0200
From: Magnus Danielson mag...@rubidium.dyndns.org
Subject: Re: [time-nuts] Measuring phase shift between 1 Hz DMTD
signals by I+Q processing
To: Discussion
Bruce Griffiths wrote:
If one uses a mixer output frequency of several kHz then one can avoid
the flicker noise region if one uses a high pass filter between the ADCs
and the mixer preamps.
Traditionally the beat frequency balance against the flicker noise in
which a lower beat frequency
