From 2e742d9281b8e86ccd01da372886eaea2379ee3b Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@openmoko.org>
Date: Sun, 24 Oct 2010 20:15:11 -0300
Subject: [PATCH] Assorted termination simulation cleanup.

- term/Makefile: "make qucs" shortcut for invoking qucs
- term/term.sch: disable switch to .dpl page after simulation
- term/term.sch: changed R3 from 50 Ohm to the more common 47 Ohm
- term/term.sch: changed C2 from 22 pF to 330 pF to match TVS
- term/term.sch: renamed Vin to Vdst and put graph in diagram on top
- term/term.sch: added more annotations
---
 cntr/term/Makefile |  4 ++++
 cntr/term/term.sch | 21 +++++++++++++--------
 2 files changed, 17 insertions(+), 8 deletions(-)
 create mode 100644 cntr/term/Makefile

diff --git a/cntr/term/Makefile b/cntr/term/Makefile
new file mode 100644
index 0000000..0416f41
--- /dev/null
+++ b/cntr/term/Makefile
@@ -0,0 +1,4 @@
+.PHONY:		qucs
+
+qucs:
+		qucs `pwd`/term.sch
diff --git a/cntr/term/term.sch b/cntr/term/term.sch
index fef7cdd..7d45c59 100644
--- a/cntr/term/term.sch
+++ b/cntr/term/term.sch
@@ -4,7 +4,7 @@
   <Grid=10,10,1>
   <DataSet=term.dat>
   <DataDisplay=term.dpl>
-  <OpenDisplay=1>
+  <OpenDisplay=0>
   <showFrame=0>
   <FrameText0=Title>
   <FrameText1=Drawn By:>
@@ -16,7 +16,6 @@
 <Components>
   <GND * 1 340 460 0 0 0 0>
   <TLIN Line1 1 570 280 -26 20 0 0 "50 Ohm" 1 "2000 mm" 1 "0 dB" 0 "26.85" 0>
-  <R R3 1 710 280 -26 -59 0 2 "50 Ohm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
   <GND * 1 1280 460 0 0 0 0>
   <GND * 1 1030 460 0 0 0 0>
   <_BJT T1 1 930 280 8 -26 0 0 "npn" 1 "1e-16" 1 "1" 1 "1" 0 "0" 0 "0" 0 "0" 1 "0" 0 "0" 0 "1.5" 0 "0" 0 "2" 0 "100" 1 "1" 0 "0" 0 "0" 0 "0" 0 "0" 0 "0" 0 "0" 0 "0.75" 0 "0.33" 0 "0" 0 "0.75" 0 "0.33" 0 "1.0" 0 "0" 0 "0.75" 0 "0" 0 "0.5" 0 "0.0" 0 "0.0" 0 "0.0" 0 "0.0" 0 "0.0" 0 "26.85" 0 "0.0" 0 "1.0" 0 "1.0" 0 "0.0" 0 "1.0" 0 "1.0" 0 "0.0" 0 "0.0" 0 "3.0" 0 "1.11" 0 "26.85" 0 "1.0" 0>
@@ -26,12 +25,13 @@
   <Vac V3 1 340 330 -89 -26 1 1 "1 V" 1 "1 GHz" 1 "0" 0 "0" 0>
   <.DC DC1 1 70 50 0 50 0 0 "26.85" 0 "0.001" 0 "1 pA" 0 "1 uV" 0 "no" 0 "150" 0 "no" 0 "none" 0 "CroutLU" 0>
   <.TR TR1 1 70 140 0 86 0 0 "lin" 1 "0 us" 1 "1 us" 1 "20000" 0 "Gear" 0 "4" 0 "1 ns" 0 "1e-16" 0 "150" 0 "0.001" 0 "1 pA" 0 "1 uV" 0 "26.85" 0 "1e-3" 0 "1e-6" 0 "1" 0 "CroutLU" 0 "no" 0 "yes" 0 "0" 0>
-  <R R1 1 430 280 -26 15 0 0 "500 Ohm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
   <R R4 1 930 170 15 -26 0 1 "1 kOhm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
   <Vrect V4 1 340 410 18 -26 0 1 "3 V" 1 "50 ns" 1 "50 ns" 1 "1 ns" 1 "1 ns" 1 "5 ns" 0>
   <R R2 1 1190 280 -26 15 0 0 "3 MOhm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
   <C C1 1 1030 370 17 -26 1 3 "3 pF" 1 "1 V" 0 "neutral" 0>
-  <C C2 1 820 370 17 -26 0 1 "22 pF" 1 "" 0 "neutral" 0>
+  <C C2 1 820 370 17 -26 0 1 "330 pF" 1 "" 0 "neutral" 0>
+  <R R1 1 430 280 -26 15 0 0 "500 Ohm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
+  <R R3 1 710 280 -26 -59 0 2 "47 Ohm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
 </Components>
 <Wires>
   <460 280 540 280 "" 0 0 0 "">
@@ -39,7 +39,7 @@
   <740 280 820 280 "" 0 0 0 "">
   <1220 280 1280 280 "" 0 0 0 "">
   <1280 280 1280 460 "" 0 0 0 "">
-  <1030 280 1160 280 "Vin" 1150 180 107 "">
+  <1030 280 1160 280 "Vdst" 1150 180 107 "">
   <930 310 930 460 "" 0 0 0 "">
   <930 100 930 140 "" 0 0 0 "">
   <930 100 1280 100 "" 0 0 0 "">
@@ -58,14 +58,19 @@
   <340 360 340 380 "" 0 0 0 "">
   <1030 400 1030 460 "" 0 0 0 "">
   <1030 280 1030 340 "" 0 0 0 "">
-  <340 280 340 280 "Vsrc" 370 250 0 "">
+  <340 280 340 280 "Vsrc" 290 220 0 "">
 </Wires>
 <Diagrams>
-  <Rect 120 799 1223 219 3 #c0c0c0 1 00 1 0 2e-08 3e-07 1 -0.344949 1 3.63136 1 -1 0.5 1 315 0 225 "" "" "">
-	<"Vin.Vt" #0000ff 0 3 0 0 1>
+  <Rect 120 799 1223 219 3 #c0c0c0 1 00 1 0 5e-08 1e-06 1 -2 2 4.5 1 -1 0.5 1 315 0 225 "" "" "">
 	<"Vsrc.Vt" #ff0000 0 3 0 0 0>
+	<"Vdst.Vt" #0000ff 0 3 0 0 0>
   </Rect>
 </Diagrams>
 <Paintings>
   <Text 1040 390 12 #000000 0 "(parasitic)">
+  <Text 840 390 12 #000000 0 "(TVS)">
+  <Text 400 340 12 #000000 0 "(very weak driver)">
+  <Text 1130 340 12 #000000 0 "(1 uA input leakage)">
+  <Text 250 370 12 #000000 0 "(noise)">
+  <Text 450 440 12 #000000 0 "(10 MHz)">
 </Paintings>