电测知识分享 | 10分钟学会！超火网络应用测试教程来了，火速收藏起来

[{"insert":"在当今的网络应用中，当属以太网最流行，特别是终端电脑的连接几乎是以太网的天下，即使无线网卡最终也是以太网协议。终端网络分为有线以太网和无线WF,目前都形成了IEEE的标准。\n今天，我们就来学习一下，"},{"attributes":{"color":"#d92142","bold":true},"insert":"1000M BASE-T（快速以太网）的测试操作"},{"insert":"步骤。\n"},{"attributes":{"bold":true},"insert":"测试项目及参考标准"},{"insert":"\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/dfba890288d72dfb.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"attributes":{"bold":true},"insert":"测试系统搭建"},{"insert":"\n"},{"attributes":{"bold":true},"insert":"仪器/附件/软件清单"},{"insert":"\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/c1728bd6853889fa.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"本次测试需要用到的主要测试仪器型号，涉及是德科技MSOS804A示波器，以及是德科技E5071C网络分析仪。\n我们可以在君鉴科技旗下测试仪器信息服务平台"},{"attributes":{"color":"#d92142","bold":true},"insert":"“每日E问”"},{"insert":"搜寻相关型号，查看仪器的产品参数、配置文档、相关推荐等信息。\n "},{"insert":{"image":"https://files.eteforum.com/article/202308/7b92bb4ac76222ba.png"}},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"此外，我们还可以使用每日E问中的"},{"attributes":{"color":"#d92142","bold":true},"insert":"“智能AI助手”"},{"insert":"功能，通过AI来解答电子测试方面的一些疑问，例如仪器型号介绍等。\n "},{"insert":{"image":"https://files.eteforum.com/article/202308/b8f47e12f7782eb4.png"}},{"attributes":{"align":"center"},"insert":"\n"},{"attributes":{"bold":true},"insert":"连接设备示意图："},{"insert":"\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/1bedb1bb43a00b5c.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"attributes":{"bold":true},"insert":"操作步骤："},{"insert":"\n"},{"attributes":{"color":"#d92142","bold":true},"insert":"Probing for 1000 Base-T Test Mode 1 Tests"},{"insert":"\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/1f52a8e8301c0deb.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"1.用短的直通非屏蔽双绞线网线将DUT连接到以太网测试夹具第2部分的RJ45连接器。\n2.将带有N2752A插座探头连接到正在测试的夹具对应测试点（A、B、C或D），并连接到示波器通道。\n3.确保探头的极性正确。\n4.然后打开D9010ETHC以太网一致性测试软件，在软件内配置DUT的测试项目。\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/841c6cc919b6ef31.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"5.确保DUT正在传输用户界面中指示的适当“测试模式1”信号。\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/be077aec2b430f34.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"6.确定我们DUT切换到我们的“测试模式1”信号在示波器界面出现相应的码型，然后点击 ”connection completed- run test。“\n7.点击results，查看我们测试结果。\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/be17ac2aba43d110.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":" \n"},{"attributes":{"color":"#d92142","bold":true},"insert":"Connection for Test Mode 4 signal test."},{"insert":"\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/e594f8ffebf01c0a.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"1.用短的直通非屏蔽双绞线网线将DUT连接到夹具2上的RJ45连接器\n2.然后用探头放大器加插入前端将示波器CH1与夹具section 2 pairB 连接起来。\n3.将我们DUT进入 test mode 4.然后点击示波器”connection completed- run test“等待测试结果。\n \n"},{"attributes":{"color":"#d92142","bold":true},"insert":"1000 Base-T, Common Mode Voltage"},{"insert":"\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/cf4daf0665428cba.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"1.使用短直通非屏蔽双绞线网线将DUT连接到夹具section 4上的RJ45。\n2.夹具section 4上的BNC接头使用BNC连接线将示波器的通道4连接起来。\n3.将DUT到切换到1000 B ase-T测试模式4。\n4.查看波形，然后点击 connection completed。\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/ec472c94390d65ac.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":" \n"},{"attributes":{"color":"#d92142","bold":true},"insert":"1000 Base-T, MASTER Clock Jitter (/ TX_TCLK)"},{"insert":"\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/7ce1996e7f5be875.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"1.通过非屏蔽双绞线网线将DUT连接到测试夹具section 1 RJ45\n2.通过两根SMA转BNC射频线分别将夹具section 1 D+ CHAN 1 D- CHAN 2 连接起来。\n3.将DUT切换到test mode 2\n4.查看示波器确保DUT正在传输正确的信号。\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/e8c59936c94d2b8b.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":" \n"},{"attributes":{"color":"#d92142","bold":true},"insert":"1000Base-T MDI Return Loss Test with VNA"},{"insert":"\n"},{"insert":{"image":"https://files.eteforum.com/article/202308/2e22c914d2e17d42.png"}},{"insert":" "},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"1. 通过网线将我们示波器与网分连接，示波器能控制上网络分析仪。\n2. 通过非屏蔽双绞线网线将DUT连接到测试夹具section 1 RJ45。\n3. 通过 SMA射频线将网分1端口连接至夹具的section 10。\n4. 通过两根SAM射频线将section 10 D+ D- 短接至夹具 BNLUN。\n5. 然后这设置我们网分，对我们夹具进行校准。\n6. 设置网分测量 为S11。\n7. 起始频率：1MHz。\n8. 终止频率：100MHz。\n9. 打开网分的平均。\n10. 然后点击：cal-选择校准件型号—1port cal-连接夹具专用的校准件，按照open，short，load，对夹具进行校准。\n "},{"insert":{"image":"https://files.eteforum.com/article/202308/252b06a7f715c50d.png"}},{"attributes":{"align":"center"},"insert":"\n"},{"insert":"——作者 君鉴科技/詹军学"},{"attributes":{"align":"right"},"insert":"\n"},{"insert":"——来源 每日E问eteforum"},{"attributes":{"align":"right"},"insert":"\n"},{"insert":"\n"}]