{"id":10073,"date":"2025-11-24T23:46:04","date_gmt":"2025-11-24T23:46:04","guid":{"rendered":"https:\/\/www.besterpcba.com\/?p=10073"},"modified":"2025-11-24T23:46:05","modified_gmt":"2025-11-24T23:46:05","slug":"pcb-build-signal-noise","status":"publish","type":"post","link":"https:\/\/www.besterpcba.com\/zh_hk\/pcb-%e5%bb%ba%e7%ab%8b%e4%bf%a1%e8%99%9f%e5%99%aa%e8%81%b2\/","title":{"rendered":"\u60a8\u7684PCB\u5efa\u69cb\u7684\u8a0a\u566a\u6bd4\uff08SNR\uff09"},"content":{"rendered":"<p>\u4f60\u9ede\u64ca\u4e86\u201c\u4e0a\u50b3\u201d\u3002\u4f60\u770b\u5230\u201c\u8a02\u55ae\u5df2\u63a5\u6536\u201d\u7684\u78ba\u8a8d\u8a0a\u606f\u3002\u4f60\u8a08\u7b97\u5929\u6578\uff1a\u4e09\u5929\u9031\u8f49\uff0c\u661f\u671f\u56db\u51fa\u8ca8\uff0c\u661f\u671f\u4e00\u7d44\u88dd\u3002\u6642\u9593\u7dca\u8feb\uff0c\u4f46\u6578\u5b78\u6210\u7acb\u3002\u4f60\u56de\u5bb6\u4e86\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.besterpcba.com\/wp-content\/uploads\/2025\/11\/pcb-schematics-waiting-on-dark-desk.jpg\" alt=\"\u4e00\u758a\u5370\u5237\u96fb\u8def\u8a2d\u8a08\u539f\u7406\u5716\u64fa\u653e\u5728\u6697\u8272\u6728\u684c\u4e0a\uff0c\u7531\u4e00\u76de\u73fe\u4ee3\u684c\u71c8\u7167\u660e\u3002\u8fa6\u516c\u5ba4\u7684\u5176\u9918\u90e8\u5206\u90fd\u8655\u65bc\u9ed1\u6697\u4e14\u6a21\u7cca\u7684\u72c0\u614b\u3002\" title=\"\u591c\u665a\u7684\u684c\u9762PCB\u8a2d\u8a08\u539f\u7406\u5716\"\/><figcaption class=\"wp-element-caption\">\u7576\u4e00\u500b\u8a2d\u8a08\u6709\u672a\u89e3\u7b54\u7684\u554f\u984c\u6642\uff0c\u5b83\u6703\u9032\u5165\u201c\u884c\u653f\u505c\u7559\u6642\u9593\u201d\uff0c\u7b49\u5f85\u5728\u968a\u5217\u4e2d\uff0c\u800c\u4e0d\u662f\u9032\u5165\u751f\u7522<\/figcaption><\/figure><\/div>\n\n\n<p>\u4f46\u7576\u4f60\u7761\u89ba\u6642\uff0c\u4f60\u7684\u8cc7\u6599\u6703\u9032\u5165\u201c\u9ed1\u6d1e\u201d\u2014\u2014\u524d\u88fd\u7a0b\u5de5\u7a0b\u3002\u5728\u6a19\u6e96\u7684\u88fd\u9020\u6a21\u578b\u4e2d\uff0c\u4f60\u7684\u6a94\u6848\u4e0d\u6703\u50b3\u9001\u5230\u6a5f\u5668\uff0c\u800c\u662f\u50b3\u9001\u5230\u968a\u5217\u4e2d\u3002\u5982\u679czip\u6a94\u4e2d\u6709\u4efb\u4f55\u6a21\u7cca\u4e4b\u8655\u2014\u2014\u7f3a\u5c11\u947d\u5b54\u5716\u3001\u95dc\u65bc\u932b\u818f\u64f4\u5c55\u7684\u77db\u76fe\u8a18\u9304\uff0c\u6216\u7db2\u8def\u6e05\u55ae\u8207Gerber\u5e7e\u4f55\u5716\u4e0d\u7b26\u2014\u2014\u6642\u9593\u5c31\u505c\u6b62\u4e86\u3002\u5b83\u4e0d\u662f\u66ab\u505c\uff0c\u800c\u662f\u91cd\u7f6e\u3002\u4f60\u4ed8\u8cbb\u7684\u201c3\u5929\u9031\u8f49\u201d\u53ea\u662f\u4e00\u500b\u865b\u69cb\uff0c\u56e0\u70ba\u9019\u500b\u6642\u9418\u53ea\u6709\u5728\u5de5\u7a0b\u67e5\u8a62\uff08EQ\uff09\u89e3\u6c7a\u5f8c\u624d\u6703\u958b\u59cb\u8a08\u6642\u3002\u9019\u5c31\u662f\u201c\u884c\u653f\u505c\u7559\u6642\u9593\u201d\uff0c\u5728\u8a31\u591a\u5de5\u5ee0\uff0c\u6b64\u6642\u9593\u4f54\u4e86\u4ea4\u8ca8\u6642\u9593\u768480%\u3002\u677f\u5b50\u4e26\u672a\u88ab\u8755\u523b\uff0c\u800c\u662f\u5728\u7b49\u5f85\u4e00\u5c01\u96fb\u5b50\u90f5\u4ef6\u4e32\u4e2d\u6d41\u7d93\u4e09\u500b\u4e0d\u7406\u89e3\u4f60\u8a2d\u8a08\u7684\u7269\u7406\u7279\u6027\u7684\u4eba\u3002<\/p>\n\n\n<h2 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id=\"the-entropy-of-the-middleman\">\u4e2d\u9593\u4eba\u71b5<\/h2>\n\n\n<p>\u5927\u591a\u6578\u88fd\u9020\u6d41\u7a0b\u5931\u6557\uff0c\u539f\u56e0\u5728\u65bc\u5728\u8cc7\u6599\u4f86\u6e90\uff08\u4f60\uff09\u8207\u57f7\u884c\u8cc7\u6599\u7684CAM\u7ad9\u4e4b\u9593\u63d2\u5165\u4e86\u4e00\u500b\u975e\u6280\u8853\u6027\u7684\u4eba\u54e1\u3002\u9019\u88ab\u7a31\u70ba\u201c\u7d93\u7d00\u4eba\u6a21\u578b\u201d\u3002\u5728\u9019\u7a2e\u8a2d\u7f6e\u4e2d\uff0c\u4f60\u7684\u6280\u8853\u67e5\u8a62\u6703\u7d93\u904e\u4e00\u689d\u5371\u96aa\u7684\u8def\u5f91\uff1a\u5f9e\u73fe\u5834\u7684CAM\u5de5\u7a0b\u5e2b\uff0c\u8f49\u8b6f\u6210\u5c0d\u92b7\u552e\u4ee3\u8868\u7684\u7c21\u5316\u5099\u8a3b\uff0c\u7136\u5f8c\u4ee5\u96fb\u5b50\u90f5\u4ef6\u50b3\u9001\u7d66\u4f60\u516c\u53f8\u7684\u63a1\u8cfc\u7d93\u7406\uff0c\u6700\u5f8c\u518d\u8f49\u767c\u7d66\u4f60\u3002<\/p>\n\n\n\n<p>\u9019\u662f\u4e00\u5834\u7528\u9ad8\u98a8\u96aa\u88fd\u9020\u898f\u683c\u9032\u884c\u7684\u96fb\u8a71\u904a\u6232\u3002\u8cc7\u8a0a\u5c31\u50cf\u80fd\u91cf\uff1a\u6bcf\u4e00\u6b21\u50b3\u905e\u90fd\u6703\u55aa\u5931\u4e00\u4e9b\uff0c\u53d7\u5230\u71b5\u7684\u5f71\u97ff\u3002\u4f60\u53ef\u80fd\u8981\u6c42\u5728\u5dee\u5206\u5c0d\u4e0a\u6709\u7279\u5b9a\u7684\u963b\u6297\u5bb9\u5dee\u3002\u92b7\u552e\u4ee3\u8868\u71b1\u8877\u65bc\u7d50\u6848\uff0c\u4e14\u7f3a\u4e4f\u96fb\u6a5f\u5de5\u7a0b\u80cc\u666f\uff0c\u53ef\u80fd\u6703\u5c07\u201c90\u6b50\u59c6+\/- 10%\u201d\u89e3\u91cb\u70ba\u4e00\u5834\u50f9\u683c\u8ac7\u5224\uff0c\u800c\u975e\u786c\u6027\u7269\u7406\u9650\u5236\u3002\u4ed6\u5011\u53ef\u80fd\u6703\u627f\u8afe\u201c\u6a19\u6e96100\u6b50\u59c6\u5c31\u5df2\u7d93\u8db3\u5920\u201d\uff0c\u537b\u5f9e\u672a\u8aee\u8a62\u8ca0\u8cacPolar Si9000\u8a08\u7b97\u5668\u7684\u4eba\u3002\u5728\u932f\u8aa4\u88ab\u767c\u73fe\u2014\u2014\u901a\u5e38\u662f\u5728\u677f\u5b50\u672a\u901a\u904e\u8a0a\u865f\u5b8c\u6574\u6027\u6e2c\u8a66\u5f8c\u2014\u2014\u201c\u5feb\u901f\u9031\u8f49\u201d\u5df2\u7d93\u8b8a\u6210\u4e86\u5ee2\u54c1\u3002<\/p>\n\n\n\n<p>\u5c0d\u65bc\u7ba1\u7406\u7dca\u6e4aNPI\u6642\u9593\u8868\u7684\u4eba\u4f86\u8aaa\uff0c\u9019\u6703\u5e36\u4f86\u4e00\u7a2e\u5371\u96aa\u7684\u932f\u89ba\u3002\u5e38\u5e38\u6703\u5c07\u201c\u5df2\u4e0b\u8a02\u55ae\u201d\u548c\u201c\u5df2\u958b\u59cb\u4f5c\u696d\u201d\u6df7\u6dc6\u3002\u5982\u679c\u4f60\u5728\u4e0a\u50b3\u8cc7\u6599\u4e09\u5929\u5f8c\u6536\u5230\u95dc\u65bc\u7f3a\u5c11\u201c <code>.drl<\/code> \u6a94\u6848\u6216\u6a21\u7cca\u7684Excellon\u683c\u5f0f\u7684\u5de5\u7a0b\u67e5\u8a62\uff0c\u5728\u4f60\u4e0a\u50b3\u8cc7\u6599\u4e09\u5929\u5f8c\uff0c\u4f60\u7684\u5c08\u6848\u4e0d\u50c5\u50c5\u662f\u5ef6\u9072\u4e86\u4e09\u5929\u3002\u5b83\u662f\u6240\u6709\u8a72\u93c8\u689d\u4e2d\u7684\u96fb\u5b50\u90f5\u4ef6\u7b49\u5f85\u6642\u9593\u7684\u7e3d\u548c\u3002\u7d93\u7d00\u4eba\u6a21\u578b\u512a\u5148\u8003\u616e\u4ea4\u6613\uff1b\u5de5\u7a0b\u6a21\u578b\u5247\u5fc5\u9808\u512a\u5148\u8003\u616e\u8cc7\u6599\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-physics-of-direct-access\">\u76f4\u63a5\u5b58\u53d6\u7684\u7269\u7406\u5b78<\/h2>\n\n\n<p>\u5be6\u969b\u901f\u5ea6\u4e0d\u518d\u7531\u947d\u5b54\u4e3b\u8ef8\u8f49\u901f\u6c7a\u5b9a\u2014\u2014\u800c\u662f\u7531\u9023\u7d50\u6027\u6c7a\u5b9a\u3002\u7576\u4f60\u5f9e\u6280\u8853\u5faa\u74b0\u4e2d\u79fb\u9664\u5546\u696d\u5c64\u6642\uff0c\u4f60\u6539\u8b8a\u4e86\u5efa\u9020\u7684\u7269\u7406\u898f\u5247\u3002 <\/p>\n\n\n\n<p>\u4f86\u770b\u770b\u201c\u963b\u6297\u5669\u5922\u201d\u3002\u4f60\u6b63\u5728\u8a2d\u8a08\u4e00\u500b\u7b26\u5408USB 3.0\u8981\u6c42\u7684\u96fb\u8def\u677f\u3002\u4f60\u9700\u8981\u7279\u5b9a\u7684\u5806\u758a\u4f86\u9054\u523090\u6b50\u59c6\u7684\u5dee\u5206\u963b\u6297\u3002\u5728\u820a\u4e16\u754c\u4e2d\uff0c\u4f60\u731c\u6e2c\u6750\u6599\uff0c\u50b3\u9001\u6a94\u6848\uff0c\u7b49\u5f85\u88fd\u9020\u5ee0\u544a\u8a34\u4f60\u4ed6\u5011\u7684Rogers 4350B\u6216Isola 370HR\u7684\u5eab\u5b58\u662f\u5426\u7b26\u5408\u4f60\u7684\u731c\u6e2c\u3002<\/p>\n\n\n\n<p>\u5728\u76f4\u63a5\u5b58\u53d6\u6a21\u578b\u4e2d\uff0c\u9019\u7a2e\u5354\u5546\u6703\u5be6\u6642\u9032\u884c\uff0c\u901a\u5e38\u5728\u8a2d\u8a08\u5b9a\u7a3f\u524d\u3002\u4f60\u4e26\u4e0d\u662f\u5728\u96fb\u5b50\u90f5\u4ef6\u4e2d\u806f\u7e6b\u92b7\u552e\u4ee3\u8868\uff1b\u4f60\u548cCAM\u5de5\u7a0b\u5e2b\u5728\u770b\u540c\u4e00\u500b\u87a2\u5e55\u3002\u4f60\u53ef\u80fd\u6703\u767c\u73fe\u4f60\u6307\u5b9a\u7684\u4ecb\u96fb\u8cea\u539a\u5ea6\u5728\u7576\u524d\u5eab\u5b58\u4e2d\u4e0d\u53ef\u7528\uff0c\u4f46\u4e00\u500b\u76f8\u5bb9\u7684\u66ff\u4ee3\u54c1\u6b63\u64fa\u5728\u8ca8\u67b6\u4e0a\u3002\u4f60\u5c31\u5728\u90a3\u88e1\u4f5c\u51fa\u6c7a\u5b9a\u3002\u4f60\u5728\u4f60\u7684\u4f48\u5c40\u8edf\u9ad4\u4e2d\u8abf\u6574\u8d70\u7dda\u5bec\u5ea6\u2014\u2014\u5982Altium\u3001Cadence\u6216\u4f60\u4f7f\u7528\u7684\u8edf\u9ad4\u2014\u2014\u4ee5\u7b26\u5408\u65b0\u6750\u6599\u5e38\u6578\uff0c\u7136\u5f8c\u6b63\u5f0f\u91cb\u51fa\u5de5\u55ae\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.besterpcba.com\/wp-content\/uploads\/2025\/11\/engineers-collaborating-on-pcb-design-remotely.jpg\" alt=\"\u4e00\u500b\u5de5\u7a0b\u5e2b\u5f9e\u80a9\u8180\u5f8c\u65b9\u770b\u8457\u986f\u793a\u8907\u96dc\u96fb\u8def\u677f\u4f48\u5c40\u7684\u96fb\u8166\u87a2\u5e55\uff0c\u89d2\u843d\u7684\u4e00\u500b\u8996\u983b\u901a\u8a71\u4e2d\uff0c\u4e00\u4f4d\u5de5\u7a0b\u5e2b\u6307\u8457\u5171\u4eab\u8a2d\u8a08\u3002\" title=\"\u5de5\u7a0b\u5e2b\u5408\u4f5c\u8a2d\u8a08PCB\"\/><figcaption 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