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mirror of git://projects.qi-hardware.com/ben-wpan.git synced 2024-11-25 18:57:11 +02:00

prod/doc/: completed section on component orientation (with pictures)

This commit is contained in:
Werner Almesberger 2011-05-29 14:46:00 -03:00
parent 46b15effa9
commit a662410560
6 changed files with 92 additions and 3 deletions

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@ -4,8 +4,10 @@ GENERATED=index.html setup.html flash.html test.html analysis.html \
atben-A.png atusb-A.png atben-B.png atusb-B.png \
atben-A-small.png atusb-A-small.png \
atben-B-small.png atusb-B-small.png \
atrf-path-small.png
ORIGINAL=scope-atben-clkm.png scope-atusb-clkm.png scope-atusb-clk.png
atrf-path-small.png \
atben-compor.png atusb-compor.png
ORIGINAL=scope-atben-clkm.png scope-atusb-clkm.png scope-atusb-clk.png \
atben-compor.jpg atusb-compor.jpg
DL=http://downloads.qi-hardware.com/people/werner/wpan/tmp
@ -36,6 +38,10 @@ atben-%-small.png: \
fig2dev -L png -m 0.5 -S 4 >$@ || \
{ rm -f $@; exit 1; }
atben-compor.png: \
atben-compor.fig
fig2dev -L png -m 0.25 -S 4 $< >$@ || { rm -f $@; exit 1; }
atben-%.png: atben.fig
./figfilt `echo $@ | tr -cd 'A-Z'` $< | \
fig2dev -L png -m 2 -S 4 >$@ || \
@ -47,6 +53,10 @@ atusb-%-small.png: \
fig2dev -L png -m 0.5 -S 4 >$@ || \
{ rm -f $@; exit 1; }
atusb-compor.png: \
atusb-compor.fig
fig2dev -L png -m 0.25 -S 4 $< >$@ || { rm -f $@; exit 1; }
atusb-%.png: atusb.fig
./figfilt `echo $@ | tr -cd 'A-Z'` $< | \
fig2dev -L png -m 2 -S 4 >$@ || \

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@ -24,7 +24,50 @@
<SECTION ref="orientation" title="Component orientation">
@@@
There are several components whose footprint has a 180&deg; or even 90&deg;
rotational symmetry, but the component's electrical function is not symmetric.
Therefore, if such a component is incorrectly rotated, it will appear to the
casual observer to be properly placed, but it will not work.
<P>
These components are:
<UL>
<LI>the transceiver chip,
<LI>the microcontroller (<B>atusb</B> only),
<LI>the balun, and
<LI>the LED (<B>atusb</B> only)
</UL>
<!-- ---------------------------------------------------------------------- -->
<SUBSECTION title="atben components">
<B>atben</B> only has the transceiver and the balun. The markings on
both face towards the crystal and the antenna:
<P>
<A href="atben-compor.jpg"><IMG src="atben-compor.png"></A>
<P>
The corner next to pin 1 of the transceiver is marked with small dot.
The picture above also shows the orientation of the text printed on
the package. The balun is marked with a square between pins 1 and 6.
<!-- ---------------------------------------------------------------------- -->
<SUBSECTION title="atusb components">
In <B>atusb</B>, the marking on the transceiver is on the corner between
the crystal and the antenna. The marking on the balun faces towards the
antenna. The microcontroller's "top" side faces towards the USB connector.
<P>
<A href="atusb-compor.jpg"><IMG src="atusb-compor.png"></A>
<P>
It is difficult to determine the LED's orientation by visual inspection.
An efficient approach is to touch the LED's terminals with the probes
of a multimeter set to measure resistance. The small current used for
the measurement will light the LED.
<!-- ====================================================================== -->

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prod/doc/atben-compor.fig Normal file
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@ -0,0 +1,15 @@
#FIG 3.2 Produced by xfig version 3.2.5b
Landscape
Center
Metric
A4
100.00
Single
-2
1200 2
1 3 0 8 4 7 45 -1 -1 0.000 1 0.0000 5895 3240 407 407 5895 3240 6302 3240
1 3 0 8 4 7 45 -1 -1 0.000 1 0.0000 4185 4365 405 405 4185 4365 4590 4365
2 5 0 1 0 -1 50 -1 -1 0.000 0 0 -1 0 0 5
0 atben-compor.jpg
405 1665 11377 1665 11377 8094 405 8094 405 1665
4 1 4 45 -1 18 64 4.7124 4 780 2760 2700 5625 TEXT\001

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prod/doc/atusb-compor.fig Normal file
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@ -0,0 +1,21 @@
#FIG 3.2 Produced by xfig version 3.2.5b
Landscape
Center
Metric
A4
100.00
Single
-2
1200 2
1 3 0 8 4 7 45 -1 -1 0.000 1 0.0000 2295 5670 405 405 2295 5670 2700 5670
1 3 0 8 4 7 45 -1 -1 0.000 1 0.0000 9090 6120 405 405 9090 6120 9495 6120
1 3 0 8 4 7 45 -1 -1 0.000 1 0.0000 11925 5265 405 405 11925 5265 12330 5265
2 5 0 1 0 -1 50 -1 20 0.000 0 0 -1 0 0 5
0 atusb-compor.jpg
135 90 14022 90 14022 9548 135 9548 135 90
2 3 0 4 7 0 45 -1 20 0.000 1 0 -1 0 0 4
9000 1035 8100 585 8100 1485 9000 1035
2 3 0 4 7 4 45 -1 20 0.000 1 0 -1 0 0 4
9945 1035 10845 585 10845 1485 9945 1035
4 1 4 45 -1 18 64 3.1416 4 780 2760 8055 4725 TEXT\001
4 1 4 45 -1 18 64 1.5708 4 780 2760 3825 4590 TEXT\001

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