From lmuller@cern.ch Fri Oct 20 20:05:46 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!cern!lmuller
From: lmuller@cern.ch (Lisa Müller)
Newsgroups: comp.dsp
Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Oct20.200546.9513@cern.ch>
Date: Fri, 20 Oct 1995 20:05:46 GMT
Organization: European Laboratory for Particle Physics, Geneva
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How the 14 ASCII characters per node are encoded into the record groove.

Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'.
The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).

The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design.

-- 
Lisa Müller | lmuller@cern.ch
PGP Key fingerprint: 09DA E77E 966E B3F6
"Keep the channels open."

From agarcia@hanse.de Sat Oct 21 11:12:46 1995
Path: ashpoly!cascade!brgate!saturno!hanse!agarcia
From: agarcia@hanse.de (Anja García)
Newsgroups: comp.dsp
Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Oct21.111246.5329@hanse.de>
Date: Sat, 21 Oct 1995 11:12:46 GMT
References: <1995Oct20.200546.9513@cern.ch>
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In article <1995Oct20.200546.9513@cern.ch>, lmuller@cern.ch (Lisa Müller) writes:
> How the 14 ASCII characters per node are encoded into the record groove.
> Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'.

On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text.

Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns.

-- 
Anja García | agarcia@hanse.de
PGP Key fingerprint: 86A5 8BFA 427F 23C8
"Keep the channels open."

From ngarcia@mindspring.com Sun Oct 22 17:30:46 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!mindspring!ngarcia
From: ngarcia@mindspring.com (Nadine García)
Newsgroups: comp.dsp
Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Oct22.173046.1884@mindspring.com>
Date: Sun, 22 Oct 1995 17:30:46 GMT
References: <1995Oct20.200546.9513@cern.ch>
Organization: MindSpring Enterprises
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In article <1995Oct20.200546.9513@cern.ch>, lmuller@cern.ch (Lisa Müller) writes:
> How the 14 ASCII characters per node are encoded into the record groove.

The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration!

Unsubscribe me from this list! (Wait, this is Usenet, never mind).

-- 
Nadine García | ngarcia@mindspring.com
PGP Key fingerprint: 702C 3D56 822B F65C
"Keep the channels open."