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> From: Bob Camp
> To: Discussion of precise time and frequency measurement
> Sent: Monday, June 2, 2014 8:01 PM
> Subject: Re: [time-nuts] "Audio" DAC for GPSDO?
>
>
> Hi
>
> There are several reasons why they don’t reco
To: Discussion of precise time and frequency measurement
Sent: Monday, June 2, 2014 8:01 PM
Subject: Re: [time-nuts] "Audio" DAC for GPSDO?
Hi
There are several reasons why they don’t recommend the typical MCU DAC for
control applications:
1) They are noisy at low frequency (1/
hat it's not recommended for control type
> applications.
>
>
> Bob
>
>
>
>
> From: Poul-Henning Kamp
> To: Bob Stewart ; Discussion of precise time and frequency
> measurement
> Sent: Monday, June 2, 2014 4:08 PM
> Subject: Re: [time-nuts] "A
I think these kinds of DACs are meant to be clocked out at some fixed
sample rate, like 44.1KHz and your software has to stuff a FIFO so
there is some milliseconds of delay in the queue. Before you use
these write some pseudo-code and see if you can make it work.
One idea is to never write to
Bob Stewart ; Discussion of precise time and frequency
measurement
Sent: Monday, June 2, 2014 4:08 PM
Subject: Re: [time-nuts] "Audio" DAC for GPSDO?
In message <1401742940.44103.yahoomail...@web142705.mail.bf1.yahoo.com>, Bob
Stewart writ
es:
>Could someone explain to m
In message <1401742940.44103.yahoomail...@web142705.mail.bf1.yahoo.com>, Bob
Stewart writ
es:
>Could someone explain to me how such an audio DAC differs from a non
>-audio DAC and why it's not suitable for this application?=A0 Is this just
>a disclaimer from microchip to avoid liability or is th
Now that my TIC is working with Bert's board, I'm considering taking the next
step of designing a GPSDO from scratch. There are several projects I'd like to
do with a dsPIC33, so that was a natural choice. But I now understand that it
has an "audio" DAC and is not recommended for process contr
