[opendtv] Re: Transition report
- From: "Dale Kelly" <dalekelly@xxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 17 Jun 2009 09:52:27 -0700
Doug wrote:
>With digital, is not the exciter designed to compensate for any
amplitude AND PHASE anomalies of the transmit antenna? This is
a few lines of computer code and some canned FFT routines, even
in the absolute worst cases. In good cases it could be
>a simple FIR filter code. Does eat up DSP power, of course.
I had completely forgotten the exciter feedback loop feature.
Dale
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx
[mailto:opendtv-bounce@xxxxxxxxxxxxx]On Behalf Of Doug McDonald
Sent: Wednesday, June 17, 2009 5:44 AM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Transition report
John Shutt wrote:
> With NTSC, the antenna is usually peaked to pass the visual carrier, the
> aural carrier, and the chroma psudocarrier.
>
> John
>
>
With digital, is not the exciter designed to compensate for any
amplitude AND PHASE anomalies of the transmit antenna? This is
a few lines of computer code and some canned FFT routines, even
in the absolute worst cases. In good cases it could be
a simple FIR filter code. Does eat up DSP power, of course.
Doug McDonald
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