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prod/doc/: converted analysis.html to analysis.hmac; language cleanup
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@ -11,8 +11,8 @@ DL=http://downloads.qi-hardware.com/people/werner/wpan/tmp
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all: $(HTMLS) $(PNGS) $(JPGS)
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all: $(HTMLS) $(PNGS) $(JPGS)
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index.html: index.hmac style.inc hmac.pl
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%.html: %.hmac style.inc hmac.pl
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perl hmac.pl index.hmac >$@ || { rm -f $@; exit 1; }
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perl hmac.pl $*.hmac >$@ || { rm -f $@; exit 1; }
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flow.png: flow.fig
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flow.png: flow.fig
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fig2dev -L png -m 0.7 -S 4 $< $@ || { rm -f $@; exit 1; }
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fig2dev -L png -m 0.7 -S 4 $< $@ || { rm -f $@; exit 1; }
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@ -1,19 +1,34 @@
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<TITLE>Production and testing: Fault analysis</TITLE>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<BODY>
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<HTML>
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<HTML>
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<H1>Production and testing: Fault analysis</H1>
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<TITLE>Production and testing: Fault analysis</TITLE>
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<BODY bgcolor="#ffffff" link="#000000" vlink="#404040">
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<INCLUDE file="style.inc">
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<PAGE_BAR title="Production and testing">
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<PAGE_ITEM href="setup.html">Software setup</PAGE_ITEM>
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<PAGE_ITEM href="flash.html">Flashing</PAGE_ITEM>
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<PAGE_ITEM href="test.html">Functional test</PAGE_ITEM>
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<PAGE_CURR href="analysis.html">Fault analysis</PAGE_CURR>
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</PAGE_BAR>
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<SECTION_BAR>
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<SECTION_ITEM href="#components">Components</SECTION_ITEM>
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<SECTION_ITEM href="#voltages">Voltages</SECTION_ITEM>
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<SECTION_ITEM href="#clock">Clock frequency</SECTION_ITEM>
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</SECTION_BAR>
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<!-- ====================================================================== -->
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<!-- ====================================================================== -->
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<H2>Component placement and orientation</H2>
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<SECTION ref="components" title="Component placement and orientation">
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<!-- ====================================================================== -->
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<!-- ====================================================================== -->
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<H2>Supply voltages</H2>
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<SECTION ref="voltages" title="Supply voltages">
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The transceiver has three voltage domains:
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The transceiver has three voltage domains:
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<UL>
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<UL>
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@ -42,7 +57,7 @@ ranges. Any voltages outside of these ranges indicate a problem.
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<!-- ---------------------------------------------------------------------- -->
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<!-- ---------------------------------------------------------------------- -->
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<H3>Measurement setup</H3>
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<SUBSECTION title="Measurement setup">
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The measurements should be performed with a digital multimeter.
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The measurements should be performed with a digital multimeter.
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The transceiver's analog and digital supplies (1.8 V) are only
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The transceiver's analog and digital supplies (1.8 V) are only
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@ -77,7 +92,7 @@ can be checked. If they are correct, proceed with checking the clock.
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<!-- ---------------------------------------------------------------------- -->
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<!-- ---------------------------------------------------------------------- -->
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<H3>Measurement points on atben</H3>
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<SUBSECTION title="Measurement points on atben">
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The supply voltages on <B>atben</B> can be measured at the terminals of
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The supply voltages on <B>atben</B> can be measured at the terminals of
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components as shown in this table:
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components as shown in this table:
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@ -100,7 +115,7 @@ This image shows the location of the measurement points:
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<!-- ---------------------------------------------------------------------- -->
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<!-- ---------------------------------------------------------------------- -->
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<H3>Measurement points on atusb</H3>
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<SUBSECTION title="Measurement points on atusb">
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The supply voltages on <B>atusb</B> can be measured at the terminals of
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The supply voltages on <B>atusb</B> can be measured at the terminals of
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components as shown in this table:
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components as shown in this table:
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@ -125,9 +140,9 @@ This image shows the location of the measurement points:
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<!-- ====================================================================== -->
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<!-- ====================================================================== -->
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<H2>Clock frequency</H2>
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<SECTION ref="clock" title="Clock frequency">
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The flawless performance of the crystal oscillator is crucial for
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The precision of the crystal oscillator is crucial for
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operation. Anomalies are easy to detect with even a low-cost oscilloscope
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operation. Anomalies are easy to detect with even a low-cost oscilloscope
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and pinpoint specific problems and help to select further analysis steps.
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and pinpoint specific problems and help to select further analysis steps.
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<P>
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<P>
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@ -145,7 +160,7 @@ applies to <B>atben</B> as well as to <B>atusb</B>.
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<!-- ---------------------------------------------------------------------- -->
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<!-- ---------------------------------------------------------------------- -->
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<H3>Measuring the clock on atben</H3>
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<SUBSECTION title="Measuring the clock on atben">
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<B>atben</B> normally does not output a clock signal. A 1 MHz clock
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<B>atben</B> normally does not output a clock signal. A 1 MHz clock
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can be enabled with the following command:
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can be enabled with the following command:
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@ -173,7 +188,7 @@ The clock signal (CLKM) is available on the test pad shown here:
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<!-- ---------------------------------------------------------------------- -->
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<!-- ---------------------------------------------------------------------- -->
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<H3>Measuring the clock on atusb</H3>
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<SUBSECTION title="Measuring the clock on atusb">
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The transceiver provides the clock for the microcontroller in <B>atusb</B>.
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The transceiver provides the clock for the microcontroller in <B>atusb</B>.
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A clock signal is therefore always available. Immediately after reset,
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A clock signal is therefore always available. Immediately after reset,
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@ -207,7 +222,7 @@ depending on how much code was successfully flashed.
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<!-- ---------------------------------------------------------------------- -->
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<!-- ---------------------------------------------------------------------- -->
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<H3>Precision measurements</H3>
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<SUBSECTION title="Precision measurements">
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The clock frequency of <B>atben</B> can be measured with an accuracy
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The clock frequency of <B>atben</B> can be measured with an accuracy
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of about +/− 100 ppm using the program <B>atrf-xtal</B>. <B>atrf-xtal</B>
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of about +/− 100 ppm using the program <B>atrf-xtal</B>. <B>atrf-xtal</B>
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@ -232,9 +247,6 @@ be good <B>atben</B> board on the same Ben at a comparable temperature.
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<P>
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<P>
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<HR>
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<HR>
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Up: <A href="index.html">Production and testing</A>
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Prev: <A href="test.html">Functional test</A>
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<HR>
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Last update: 2011-05-27 <I>Werner Almesberger</I>
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Last update: 2011-05-27 <I>Werner Almesberger</I>
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<HR>
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<HR>
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</BODY>
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</BODY>
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