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prod/doc/: added atrf-xtal run time; some minor cleanup
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@ -64,7 +64,7 @@ Defective devices can be discarded or retained for a deeper analysis.
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<DD>Device Under Test. An <B>atben</B> or <B>atusb</B> board that
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has left SMT, and is being prepared for testing or in the process
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of being tested.
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<DT>Reference</DT>
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<DT>Reference device</DT>
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<DD>An <B>atben</B> or <B>atusb</B> device that is known to work and
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and that acts as a peer for RF communication with the DUT.
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<DT>SMT</DT>
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@ -93,7 +93,7 @@ production and test process:
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<P>
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<HR>
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Last update: 2011-05-18 <I>Werner Almesberger</I>
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Last update: 2011-05-19 <I>Werner Almesberger</I>
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<HR>
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</BODY>
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</HTML>
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@ -56,8 +56,8 @@ echo 192.168.1.202 jlime >>/etc/hosts
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<H2>Ben system setup</H2>
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The configuration setting described in this section are lost on each
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reset or reboot and either need to be entered again or a setup script
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running at boot time has to be written.
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reset or reboot and either need to be entered again. Alternatively,
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a setup script running at boot time can be written.
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<!-- ---------------------------------------------------------------------- -->
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@ -150,8 +150,10 @@ clock count with an accuracy of about +/−20 ppm:
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atrf-xtal 1000 >ben.xtal
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</PRE>
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<P>
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Note that this value depends on the tolerance of the crystal in the Ben
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and is also affected by temperature. The above accuracy can therefore
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This takes about 5 seconds.
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<P>
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Note that the result depends on the tolerance of the crystal in the Ben
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and is also affected by temperature. Good accuracy can therefore
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only be obtained if this measurement is performed individually on each
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Ben, and if a stable temperature is maintained.
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@ -167,7 +169,7 @@ Ben, and if a stable temperature is maintained.
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Up: <A href="index.html">Production and testing</A>
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Next: <A href="flash.html">Flashing (<B>atusb</B> only)</A>
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<HR>
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Last update: 2011-05-18 <I>Werner Almesberger</I>
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Last update: 2011-05-19 <I>Werner Almesberger</I>
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<HR>
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</BODY>
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</HTML>
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