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嗨,我在尝试执行相位参考校准时看到错误。
请参阅随附的屏幕截图 虽然显示了错误消息,但它允许我继续完成校准程序,直到我被提示通过模块到端口1的电缆将ECal模块直接连接到端口2.然后根据提示连接 命中测量,端口1的不均匀功率闪烁,同时继续通过路由,直到最后以另一个错误结束,我相信无法定位ecal或类似的东西。 似乎所有错误都必须与ECal相关。 我用两个不同的ecal模块尝试了这个,结果相同......哦,还有一件事,我只记得看到网络分析软件启动时闪烁的另一个错误,说了一些关于defaultcalfile *违规的信息,不确定这是否相关 ...我已经出去做了几个星期的手术,并且不确定在我出门的时候可能在这个盒子上做了什么或者尝试了什么,所以如果有些事情可能已经腐败,我也不会感到惊讶......自从今天回来以后, 我已经安装了A09.90.01,并希望创建一个覆盖10MHz - 33GHz的相位参考校准集。 我们真的很期待相位参考校准电流低至10MHz! PNAX = N5245A with opt083编辑:rfelectek于2013年7月2日下午5:23 ::正确的型号从N5244A到N5245A并添加屏幕截图编辑:rfelectek于2013年7月2日下午5:42 ECal阶段ref error_rcvr overloadR4.rtf4 .6 MBECal phase ref error.rtf4.6 MBECal phase ref error_orient.rtf4.6 MB 以上来自于谷歌翻译 以下为原文 Hi, I am seeing an error when trying to perform Phase Reference cal. See attached screen capture. Although the error message is displayed, it allows me to continue through the calibration routine, right up to the point that I am prompted to attach the ECal module directly to port 2 with a cable from module to port 1. I then connect as prompted and hit measure, a unlevel power at port 1 flashes while it continues to go through the routing until finally ending with another error that I believe says unable to orient ecal or something like that. It seems as if all the errors must be related to the ECal. I have tried this with two different ecal modules, same result...Oh, one more thing, I just remembered seeing another error flashing up at launch of network analyzer software, says something about defaultcalfile* violation, not sure if that may be relevant... I have been out for a couple weeks for surgery and not sure what may have been done or tried on this box while I was out so I would not be surprised if something may have become corrupt... Since coming back today, I have installed A09.90.01 and would like to create a phase reference calset that will cover 10MHz - 33GHz. We are really looking forward to having the phase reference cal working down to 10MHz! PNAX = N5245A with opt083 Edited by: rfelectek on Jul 2, 2013 5:23 PM :: correct model number from N5244A to N5245A and add screen captures Edited by: rfelectek on Jul 2, 2013 5:42 PM 附件 |
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8个回答
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感谢您提供详细报告。
我们已经复制了您所看到的“不平衡”错误。 关于使用重要的源衰减器设置,A.09.90.01代码中存在错误。 功率水平最终设置不正确,这是导致源不平衡和ECal方向失败的原因。 我们正在修复下一版本的固件。 无论如何,相位参考校准不是40dB的输入衰减。 如果使用0dB的源衰减,您将获得更好的校准。 然后,您应该使用Cal All功能执行第二层校准,输入衰减为40dB。 这是因为Cal All功能包括一个衰减器校准,可以将相位参考校准从0dB衰减器平面正确地移动到40dB衰减器平面。 此外,我们已经复制了calkit错误。 这是女性 - 女性2.92毫米ecals的问题。 如果使用可插入的ecal,则校准将正常进行。 我们正在寻找解决问题的方法,我可以尽快为您提供固件测试版。编辑:johanericsson于2013年7月3日下午4:53 以上来自于谷歌翻译 以下为原文 Thank you for the detailed report. We've reproduced the "unleveled" error that you are seeing. There is a bug in the A.09.90.01 code with regards to using significant source attenuator settings. The power level ends up getting set incorrectly, and this is what causes the source unleveled and the ECal orientation to fail. We're putting a fix into the next version of the firmware. Regardless, the phase reference cal is not as good with 40dB of input attenuation. You will get a better calibration if you use 0dB of source attenuation. And then, you should use the Cal All feature to perform the 2nd tier calibration with 40dB of input attenuation. That's because the Cal All feature includes an attenuator calibration that will properly move the phase reference cal from the 0dB attenuator plan to the 40dB attenuator plane. Also, we have reproduced the calkit error. It is an issue with female-female 2.92 mm ecals. If you use an insertable ecal, then the calibration will proceed normally. We are looking at fixing the issue, and I can provide you with a beta of the firmware as soon as it is available. Edited by: johanericsson on Jul 3, 2013 4:53 PM |
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嗨约翰,谢谢你的回复! Ecal模块都是相同的型号,只是不同的序列号...我将尝试没有衰减的相位参考校准,看它是否有效。 我还将重新启动Network Analyzer应用程序并尝试在启动时获取错误的屏幕截图。 问候 - 史蒂夫 以上来自于谷歌翻译 以下为原文 HI Johan, Thanks for the response! The Ecal modules were both the same model, just different serial numbers... I will try the phase reference cal with no attenuation and see if it works. I will also restart Network Analyzer application and try to get screen capture of the error at startup. regards -Steve |
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请删除编辑:rfelectek于2013年7月3日下午6:47 以上来自于谷歌翻译 以下为原文 Please remove Edited by: rfelectek on Jul 3, 2013 6:47 PM |
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Mod请删除编辑:rfelectek于2013年7月3日下午6:46 以上来自于谷歌翻译 以下为原文 Mod please remove Edited by: rfelectek on Jul 3, 2013 6:46 PM |
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再次感谢,抱歉重复回复,我在论坛上也遇到了错误......我今天没有机会做另一个相位参考校准,因为我需要尽快获得一些数据,所以我做了参考混音器校准 。 在低频和低功率水平下,我仍然存在相位/ GD测量的一些问题。 也许这是接收器灵敏度问题? 我需要降至-80dBm输入,单位有~60dB增益10MHz-200MHz,LO为~2GHz。 我需要在-80dBm到-50dBm的功率扫描下获得良好的AM / PM测量。 我尝试使用20dB源极电阻校准并在-20dBm校准,然后将功率改为-50dBm并在输入端增加30dB衰减器达到-80dBm但在功率范围的低端仍然得到不良响应。 那么,在低端我从DUT出来〜-15dBm,接收器灵敏度还是低频耦合器更差? 我可以通过在这里反转耦合器来获得更好的测量吗? 以上来自于谷歌翻译 以下为原文 Thanks Again, Sorry for duplicated replies, I am having trouble with the Forums giving me errors too... I did not get a chance to do another Phase reference calibration today as I needed to get some data ASAP so I did a reference mixer calibration. I am still having some issues with phase/GD measurements at low frequencies and low power levels. maybe this is receiver sensitivity issue? I need to go down to -80dBm input and unit has ~60dB gain 10MHz-200MHz, LO is ~2GHz. I need to get good AM/PM measurements with -80dBm to -50dBm power sweep. I tried cal with 20dB source att and calibration at -20dBm then change power to -50dBm and add 30 dB pad at input to achieve -80dBm but still get bad response at lower end of power range. So, at the low end I am coming out of DUT ~-15dBm, is the receiver sensitivity or coupler at low frequencies worse? Could I get a better measurement by reversing coupler here? |
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linlin10 发表于 2018-11-28 08:41 耦合器转角频率约为500 MHz,因此50 MHz时损耗增加20 dB,10 MHz时增加35 dB。 因此,您可能希望反转端口2耦合器(您可以使用复选框为第一层cal进行相位参考)。 此外,您可能需要反转端口1耦合器,因为这会将源功率降低约14 dB并提供相同的S11灵敏度。 (作为一种帮助,这些类型的测量 - 高增益和低功率 - 在我的书的第6.3节中详细描述,http://www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html) 以上来自于谷歌翻译 以下为原文 The coupler corner frequency is about 500 MHz, so by 50 MHz the loss increases by 20 dB, and by 10 MHz its increased by 35 dB. So this is a case that you might want to reverse the port 2 coupler (you can do this for the first tier cal for phase reference with the checkbox). Also, you might want to reverse the port 1 coupler, as this will reduce the source power by about 14 dB and give the same S11 sensitivity. (just as an asside, these types of measurments -high gain and low power -- are described in detail in section 6.3 of my book, http://www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html ) |
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脑洞大赛9 发表于 2018-11-28 08:58 嗨,Joel博士,感谢您提供有关低频耦合器性能的信息! 在设置这些测试时我会考虑到这一点。 顺便说一句 - 我确实有你的书Regards -Steve的副本 以上来自于谷歌翻译 以下为原文 Hi Dr. Joel, Thank you for the info on the coupler performance at lower frequencies! I will take this into consideration when setting up these tests. BTW- I do have a copy of your book Regards -Steve |
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脑洞大赛9 发表于 2018-11-28 08:58 > {quote:title = Dr_joel写道:} {quote}>耦合器转角频率约为500 MHz,因此50 MHz时损耗增加20 dB,10 MHz时增加35 dB。 >>那么这是一个你可能想要反转端口2耦合器的情况(你可以使用复选框为第一层cal进行相位参考)。 >>此外,您可能想要反转端口1耦合器,因为这会将源功率降低约14 dB并提供相同的S11灵敏度。 >我正在尝试校准SMC通道,端口耦合器已反转,但无法通过不平衡/超出范围错误的功率校准。 有没有办法告诉PNAX软件端口1耦合器是反转还是我可以增加低端可调功率范围的另一种方法? 如果我理解正确,我实质上是增加端口1源衰减,但是30 dB源衰减器设置最小功率调整设置是-61dBm ...请告诉我我缺少的。 谢谢! 以上来自于谷歌翻译 以下为原文 > {quote:title=Dr_joel wrote:}{quote} > The coupler corner frequency is about 500 MHz, so by 50 MHz the loss increases by 20 dB, and by 10 MHz its increased by 35 dB. > > So this is a case that you might want to reverse the port 2 coupler (you can do this for the first tier cal for phase reference with the checkbox). > > Also, you might want to reverse the port 1 coupler, as this will reduce the source power by about 14 dB and give the same S11 sensitivity. > I am trying to calibrate SMC channel with Port coupler reversed but cannot get past the power cal with unlevel/out of range errors. Is there a way to tell the PNAX software that the Port 1 coupler is reversed or another way that I can increase the adjustable power range on the low end? If I understand correctly, I am essentially increasing port 1 source attenuation but with 30 dB source attenuator setting the minimum power adjustment setting is -61dBm... Please tell me what I am missing. Thank you! |
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