42. [ ] added 3n9 between U8 p3 and ground \r
+ removed some tonal noise and \r
\r
-43. [ ] changed R39 to 2k2\r
+43. [X] changed R39 to 2k2\r
+ mic bias now 2.8V\r
+ Changed in #25 RGB 09/10/14\r
\r
-44. [ ] Switcher noise reduction idea\r
+44. [-] Switcher noise reduction idea\r
+ is there away to lock the switcher osc to a uC clock?\r
+ we could make it a multiple of ADC/DAC sample rate\r
+ thus aliasing all noise down to 0 Hz\r
+ need swicther to freerun until uC starts\r
+ From data sheet, switcher freq determined by components. No ext sync capability. RGB 09/10/14\r
+ For intermittent starts, look at ext PS rise time?\r
\r
-45. [ ] review jumpers and see if it makes mores sense to make them 0 ohm 0805s\r
+45. [-] review jumpers and see if it makes mores sense to make them 0 ohm 0805s\r
+ If you implement self test code, then you want J1, but don't ship shunt.\r
+ Same for Reset jumper, J5.\r
+ J3 - there to remove bias from mic input. Need?\r
+ RGB 09/10/14\r
\r
-46. [ ] C24 closer to U1?\r
+46. [-] C24 closer to U1?\r
+ WIll move at re-route time. RGB 09/10/14\r
\r
-47. [ ] C40 should be 47nF\r
+47. [-] C40 should be 47nF\r
+ David used wrong value on prototype\r
+ Changed to 47nF. RGB 9/10/14 See Questions\r
\r
-48. [ ] LD2 opto-isolator footprint wrong (or maybe I ordered wrong part) \r
-\r
-49. [ ] location of C51 net label\r
+48. [-] LD2 opto-isolator footprint wrong (or maybe I ordered wrong part) \r
+ My mistake. Part is 8mm pin to pin, not 6mm.\r
+ Will correct footprint & PCB RGB 9/10/14\r
+ \r
+49. [X] location of C51 net label\r
+ DOne. RGB 9/10/14\r
\r
-50. [ ] SW1 needs bigger pads to make hand solderable\r
+50. [-] SW1 needs bigger pads to make hand solderable\r
+ is this suitable as a PTT switch?\r
+ button is quite small\r
+ locking PTT as per SW3 useful for testing (want to leave tx on)\r
+ Location of PTT sw fits hand. Current sw is small. Might be able to use another switch. Do you really want push-push? Will look at larger pads pending question resolution. RGB 9/10/14\r
\r
-51. [ ] CN12 is hard to solder manually, need larger mechanical pads\r
+51. [-] CN12 is hard to solder manually, need larger mechanical pads\r
+ although this would increase the outline so maybe not a problem\r
+ I'll extend pads, if I can. RGB 9/10/14\r
\r
-52. [ ] CN2 difficult to hand solder, extend padds back towards outline\r
+52. [-] CN2 difficult to hand solder, extend padds back towards outline\r
+ I'll extend pads, if I can. RGB 9/10/14\r
\r
========== ==========\r
+\r
+Questions:\r
+1. SM1000 designed to be operated with 6-16V power supply. Would should recommend 9-15V. Should we recommend PS? Many will operate at 13.8V(rig supply). Do we risk ground loops, etc. using rig supply?\r
+2. Should C37, C39, C40 be 50V? Or, only caps connected to VIN?\r
+3. Are you going to supply speaker? Need J4?\r
<element name="C39" library="_RoweTel" package="CAP-CHEMI-HA0" value="220uF,25V" x="48.18" y="37.75" locked="yes" smashed="yes">
<attribute name="NAME" x="48.43" y="30.5" size="0.8128" layer="25" ratio="10"/>
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<element name="C21" library="AA-ipc-7351-capacitor" package="CAPC1608X92N" value="10nF,16V" x="37" y="56.25" locked="yes" smashed="yes" rot="R180">
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</element>
<element name="C15" library="AA-ipc-7351-capacitor" package="CAPC1608X92N" value="2.2uF,16V" x="40.5" y="69.85" locked="yes" smashed="yes">
-<attribute name="NAME" x="39.6" y="68.05" size="0.8128" layer="25" ratio="10"/>
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<attribute name="VALUE" x="39.025" y="67.5625" size="1" layer="27" font="vector" ratio="10"/>
</element>
<element name="C3" library="AA-ipc-7351-capacitor" package="CAPC1608X92N" value="20pF,16V" x="25.5" y="51.5" locked="yes" smashed="yes" rot="R270">
<attribute name="NAME" x="48" y="83" size="0.8128" layer="25" ratio="10" rot="R90"/>
<attribute name="VALUE" x="50.2875" y="79.75" size="1" layer="27" font="vector" ratio="10" rot="R90"/>
</element>
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<attribute name="NAME" x="56.7" y="82.1" size="0.8128" layer="25" ratio="10" rot="R270"/>
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</element>
<attribute name="VALUE" x="48.3" y="64.9" size="1.27" layer="27" rot="R90"/>
</element>
<element name="C51" library="AA-ipc-7351-capacitor" package="CAPC1608X92N" value="100nF,16V" x="42" y="66" locked="yes" smashed="yes" rot="R270">
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<attribute name="VALUE" x="39.9625" y="67.25" size="1" layer="27" font="vector" ratio="10" rot="R270"/>
</element>
<element name="C52" library="AA-ipc-7351-capacitor" package="CAPC1608X92N" value="100nF,16V" x="37" y="73.25" locked="yes" smashed="yes">
<via x="16.3" y="57.2" extent="1-16" drill="0.4" diameter="0.8"/>
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+<wire x1="16.8" y1="55.8" x2="16.3" y2="57.2" width="0" layer="19" extent="1-1"/>
</signal>
<signal name="N$5">
<contactref element="C12" pad="1"/>
<via x="22" y="75" extent="1-16" drill="0.4"/>
<wire x1="20.25" y1="74.8" x2="21.8" y2="74.8" width="0.4" layer="1"/>
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<wire x1="14.7" y1="62.5" x2="13.5" y2="62.5" width="0.2" layer="1"/>
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<contactref element="C49" pad="2"/>
<contactref element="R22" pad="1"/>
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+<wire x1="39.96" y1="18.25" x2="51.96" y2="18.25" width="0" layer="19" extent="1-1"/>
+<wire x1="63.5" y1="10.5" x2="51.96" y2="18.25" width="0" layer="19" extent="1-2"/>
+<wire x1="15.2" y1="55.8" x2="19.2" y2="56.25" width="0" layer="19" extent="1-1"/>
<wire x1="-5.7" y1="58" x2="2.5" y2="49.75" width="0" layer="19" extent="1-1"/>
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+<wire x1="-5.8" y1="29.5" x2="1.9" y2="39.5" width="0" layer="19" extent="1-1"/>
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<signal name="NRST">
<contactref element="U1" pad="14"/>
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<wire x1="38.8" y1="63.4" x2="37.9" y2="62.5" width="0.2" layer="16"/>
<contactref element="R22" pad="2"/>
-<wire x1="-4.2" y1="29.5" x2="35.25" y2="61.75" width="0" layer="19" extent="1-1"/>
+<wire x1="-4.2" y1="29.5" x2="33.5" y2="63.5" width="0" layer="19" extent="1-1"/>
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<signal name="DAC1_OUT">
<contactref element="U1" pad="29"/>
<signal name="N$50">
<contactref element="R43" pad="2"/>
<contactref element="C36" pad="1"/>
-<wire x1="67.6" y1="59.5" x2="49.5" y2="65.45" width="0" layer="19" extent="1-1"/>
+<wire x1="49.5" y1="65.45" x2="67.6" y2="59.5" width="0" layer="19" extent="1-1"/>
</signal>
<signal name="N$63">
<contactref element="T1" pad="1"/>
<signal name="N$9">
<contactref element="R52" pad="2"/>
<contactref element="C36" pad="2"/>
-<wire x1="67.6" y1="56.5" x2="59" y2="54.46" width="0" layer="19" extent="1-1"/>
+<wire x1="59" y1="54.46" x2="67.6" y2="56.5" width="0" layer="19" extent="1-1"/>
</signal>
<signal name="PE0">
<contactref element="U1" pad="97"/>
<part name="V63" library="A-SUPPLY2" deviceset="GND" device=""/>
<part name="V64" library="A-SUPPLY2" deviceset="GND" device=""/>
<part name="U$8" library="A-SUPPLY2" deviceset="+VIN" device=""/>
-<part name="C40" library="AA-ipc-7351-capacitor" deviceset="CAPACITOR_" device="0603" value="100nF,25V"/>
+<part name="C40" library="AA-ipc-7351-capacitor" deviceset="CAPACITOR_" device="0603" value="47nF,25V"/>
<part name="R50" library="AA-ipc-7351-resistor" deviceset="RESISTOR_" device="0603" value="10,1%"/>
<part name="V65" library="A-SUPPLY2" deviceset="GND" device=""/>
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State=2\r
Number=0\r
\r
-[Win_2]\r
-Type="Board Editor"\r
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-[Win_3]\r
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[Desktop]\r
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