kopia lustrzana https://github.com/mobilinkd/NucleoTNC
Fix incorrect C2 designator for audio input section (should be C1).
rodzic
abf184753c
commit
1c0a6546aa
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@ -211,13 +211,13 @@
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"\n",
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"There are a number of components in this subsection:\n",
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"\n",
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" * C2 - 1uF DC blocking capacitor.*\n",
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" * R1 - 10K DC-offset resistor, along with C2 forms a 15Hz high-pass filter.\n",
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" * C1 - 1uF DC blocking capacitor.*\n",
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" * R1 - 10K DC-offset resistor, along with C1 forms a 15Hz high-pass filter.\n",
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" * D1, D2 - voltage limiter.\n",
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" * U1C - audio buffer.\n",
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" * R7, R10, R14, C4, C6, C8, and U1D - 3-pole active Bessel anti-aliasing filter.\n",
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" \n",
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"C2 was changed in 2021 to a 1uF to improve the low frequency response needed for 9600 baud.\n",
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"C1 was changed in 2021 to a 1uF to improve the low frequency response needed for 9600 baud.\n",
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"\n",
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"The quad op amp U1 is shared across the Audio Input and Audio Output sections.\n",
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" \n",
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@ -311,7 +311,7 @@
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"\n",
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"It might be worthwhile to buy an extra one of each of the passive components in case one is lost or a lead is accidentally cut too short.\n",
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"\n",
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"*Note: C2 was changed from a 220nF capacitor to a 1uF capacitor in early 2021.*\n",
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"*Note: C1 was changed from a 220nF capacitor to a 1uF capacitor in early 2021.*\n",
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"\n",
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"### Substitutions\n",
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"\n",
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@ -578,7 +578,7 @@
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" * Connect one diode from *a49* to the lower ground rail. The cathode band should be nearest *a49*.\n",
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" * Connect one diode from *j49* to the upper power rail. The cathode bnad should be neares the power rail.\n",
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" * Connect a jumper wire across the *e49-f49* gap.\n",
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" * Connect the 1uF capacitor, C2, from *e50* to *g49*.\n",
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" * Connect the 1uF capacitor, C1, from *e50* to *g49*.\n",
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" * Connect the 10kΩ resistor from *h46* to *h49*.\n",
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" * Connect a wire from *i49* to *i36*.\n",
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" * Connect a short jumper from *g37* to *g38*, tying VinA- to VoutA\n",
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