2025-09-21T10:12:11.947Z http://7400.me/ lhf Hexo http://7400.me/2025/09/21/ADVANTEST_TR6142/ 2025-09-21T10:00:00.000Z 2025-09-21T10:12:11.947Z

<p><img src="http://nas.7400.me:7400/TR6142_Teardown/TR6142_00.jpg"></p>

http://7400.me/2025/09/21/FLUKE_PM6690/ 2025-09-21T09:00:00.000Z 2025-09-21T09:58:44.496Z

<p><img src="http://nas.7400.me:7400/PM6690_Teardown/002.jpg"></p>

http://7400.me/2025/02/04/HP3582A/ 2025-02-04T09:00:00.000Z 2025-09-21T09:59:01.434Z

<p><img src="http://nas.7400.me:7400/hp3582a/3582_000.jpg"></p>

http://7400.me/2024/03/03/hp4192A/ 2024-03-03T09:07:07.000Z 2024-03-18T16:37:18.326Z

<p><img src="http://nas.7400.me:7400/hp4192a/000.jpg"></p>

http://7400.me/2023/07/02/hp8662a_PSU_repair/ 2023-07-02T15:00:00.000Z 2023-08-20T15:44:06.121Z

<p><img src="http://nas.7400.me:7400/hp8662a/PSU_repair/001.jpg"></p>

http://7400.me/2023/01/19/service_info/ 2023-01-19T03:28:00.000Z 2023-01-19T03:41:25.400Z

<p>Never underestimate the bandwidth of a station wagon full of tapes hurtling down the highway. </p> <p style='text-align: right;'> ———— Andrew Tanenbaum, 1981 </p> <p>本站图片&#x2F;文件服务器迁移工作已完成，IP地址与域名解析也已恢复。如果短期内您看不到图片，可以尝试刷新浏览设备的DNS缓存，有其他问题欢迎与博主联系。谢谢！<br><img src="http://nas.7400.me:7400/server_migration/2.jpg">P.S. 此次迁移使用一辆破电动自行车完成，机器上共有4.5TB数据，路上花费30分钟，等效带宽约25Gbps。<br></p>

http://7400.me/2022/12/09/hp8562a_repair/ 2022-12-08T17:52:00.000Z 2022-12-24T08:37:49.108Z

<p><img src="http://nas.7400.me:7400/hp8562a_repair/00.jpg"></p> <p>本系列上篇对HP 8562A频谱分析仪进行了详细拆解。本篇记载这台机器的维修过程，牵扯到电源&#x2F;本振PLL&#x2F;中频对数放大器以及CPU系统等。</p>

http://7400.me/2022/12/04/hp8562a_teardown/ 2022-12-04T08:59:00.000Z 2022-12-24T07:55:28.451Z

<p><img src="http://nas.7400.me:7400/hp8562a_teardown/000.jpg"></p>

http://7400.me/2022/11/16/RS_ESH3_repair/ 2022-11-16T15:46:00.000Z 2022-11-16T18:28:17.896Z

<p><img src="http://nas.7400.me:7400/RS_ESH3/repair/000.jpg"></p>

http://7400.me/2022/11/10/RS_ESH3_teardown/ 2022-11-09T16:21:00.000Z 2022-11-16T18:27:18.380Z

<p><img src="http://nas.7400.me:7400/RS_ESH3/teardown/000.jpg"></p>

http://7400.me/2022/10/06/tektronix-496P_repair/ 2022-10-06T14:22:22.000Z 2022-10-06T15:30:44.555Z

<p><img src="http://nas.7400.me:7400/tektronix_496P_repair/000.jpg"></p>

http://7400.me/2022/10/06/tektronix-496P_teardown/ 2022-10-06T10:18:18.000Z 2022-10-06T15:32:40.415Z

<p><img src="http://nas.7400.me:7400/tektronix_496P_teardown/000.jpg"></p>

http://7400.me/2022/09/10/informer213_2/ 2022-09-10T09:37:00.000Z 2022-09-26T03:28:56.340Z

<p><img src="http://nas.7400.me:7400/informer213/f05.jpg"><br>简单记录了通过分析硬件和逆向固件，把IBM版本Informer 213改造为VT100版本Informer 213AE的过程</p>

http://7400.me/2022/08/12/informer213_1/ 2022-08-11T17:04:10.000Z 2022-09-26T03:27:22.625Z

<p><img src="http://nas.7400.me:7400/informer213/00.jpg"><br>这是一台一年前捡来的便携式终端机，相当罕见地使用了EL屏作为显示部件。相信很少有人能抵挡它迷人的橙色辉光。</p>

http://7400.me/2022/07/31/hp8662a_4/ 2022-07-30T17:00:00.000Z 2023-07-05T13:32:01.715Z

<p><img src="http://nas.7400.me:7400/hp8662a/pt4/000.jpg"></p>

http://7400.me/2022/07/30/hp8662a_3/ 2022-07-30T15:00:00.000Z 2023-07-05T13:31:53.090Z

<p><img src="http://nas.7400.me:7400/hp8662a/pt3/1.jpg"></p>

http://7400.me/2022/07/24/hp8662a_2/ 2022-07-24T09:00:00.000Z 2023-07-05T13:31:44.723Z

<p><img src="http://nas.7400.me:7400/hp8662a/pt2/52.jpg"><br>在维修章节提到过，因为VCO故障必须拆开维修，因此从网上买了两个报废的VCO作为练手&#x2F;备件，这两个VCO版本与我的8662A所安装的不同，内部结构也有一点区别。其中一个VCO被破坏性的完全拆解，用以了解内部结构，这里先放上买来的报废VCO拆解，随后是原机VCO的拆解。</p>

http://7400.me/2022/07/24/hp8662a_1/ 2022-07-23T16:00:00.000Z 2023-07-05T13:31:36.953Z

<p><img src="http://nas.7400.me:7400/hp8662a/pt1/cover.jpg"><br>由于8662A十分复杂，在维修部分只附加与故障直接相关的图片，其他图片放在拆解部分。有些图片可能与拆解部分重复。</p>

http://7400.me/2022/06/29/hp5334a/ 2022-06-28T16:00:00.000Z 2022-06-28T19:25:36.872Z

<p><img src="http://nas.7400.me:7400/hp5334a/00.jpg"></p>

http://7400.me/2022/06/28/hp11715/ 2022-06-27T17:16:57.000Z 2022-06-28T18:41:06.014Z

<p><img src="http://nas.7400.me:7400/hp11715a/00.jpg"><br>本次拆解的是一台简单但设计巧妙且高质量的设备，它是HP 11715A，在1970年代末随着8901A调制分析仪一起推出。</p>