8510C的原始漂移性能是多少？

磁漂移看起来非常好。
相位漂移不是非常不合理，但有点高。
尝试查看S11和S22的原始阶段或延迟。
测试装置背面有一个后面板环，用于控制电缆长度返回Ref采样器。
惠普有几种不同的长度可以应用，标准的是约1米的电缆盘绕。
如果您调整此电缆以使原始S11上的延迟相对平坦，那么轻微的温度变化（导致电缆膨胀和收缩）将对相位产生较小的影响。



     以下为原文

  The mag drift looks very good. The phase drift is not terribly unreasonable, but a little high.  Try looking at the raw phase or delay of the S11 and S22. There is a rear panel loop on the back of the test set that controls the lenght of the cable back to the Ref sampler. HP had several different lengths taht could be applied, the standard one was about 1 meter of cable coiled up.  If you adjust this cable so that the delay is relatively flat on the raw S11, then slight temperature changes (which cause the cables to expand and contract) will have a smaller effect on the phase.

感谢您对这些线圈的建议。
测试装置后部有两个线圈。
你提到过，那些线圈可以以某种方式调整。
我怎么能这样做？
线圈有3.5毫米连接器。
在线圈和测试装置端部拆下线圈和清洁连接器是否是个好主意？
我们不使用测试装置的内部90dB steap衰减器，但是当将端口1置于10dB位置时，原始S11 linmag重复性变得更好但相位稳定性没有显着改善。
具有10dB内部衰减的相位稳定性现在与平均值相差最大+/- 0.6度。



     以下为原文

  Thanks your advices about those coils. There is two of those coils on rear of the test set. You mentioned, that those coils can adjust somehow. How i can do it?
Coils has 3.5mm connectors. Would it be good idea to remove coils and clean connectors on coil's and test set end's?
We don't use test set's internal 90dB steap attenuators, but when put Port 1 on 10dB position raw S11 linmag repeatability became even better but no significant improvements on phase
stability. Phase stablity with 10dB internal attenuation is now around max +/- 0.6deg from mean value.

感谢您对这些线圈的建议。
测试装置后部有两个线圈。
你提到过，那些线圈可以以某种方式调整。
我怎么能这样做？
线圈有3.5毫米连接器。
在线圈和测试装置端部拆下线圈和清洁连接器是否是个好主意？
我们不使用测试装置的内部90dB steap衰减器，但是当将端口1置于10dB位置时，原始S11 linmag重复性变得更好但相位稳定性没有显着改善。
具有10dB内部衰减的相位稳定性现在与平均值相差最大+/- 0.6度。



     以下为原文

  Thanks your advices about those coils. There is two of those coils on rear of the test set. You mentioned, that those coils can adjust somehow. How i can do it?
Coils has 3.5mm connectors. Would it be good idea to remove coils and clean connectors on coil's and test set end's?
We don't use test set's internal 90dB steap attenuators, but when put Port 1 on 10dB position raw S11 linmag repeatability became even better but no significant improvements on phase
stability. Phase stablity with 10dB internal attenuation is now around max +/- 0.6deg from mean value.

感谢您对这些线圈的建议。
测试装置后部有两个线圈。
你提到过，那些线圈可以以某种方式调整。
我怎么能这样做？
线圈有3.5毫米连接器。
在线圈和测试装置端部拆下线圈和清洁连接器是否是个好主意？
我们不使用测试装置的内部90dB steap衰减器，但是当将端口1置于10dB位置时，原始S11 linmag重复性变得更好但相位稳定性没有显着改善。
具有10dB内部衰减的相位稳定性现在与平均值相差最大+/- 0.6度。



     以下为原文

  Thanks your advices about those coils. There is two of those coils on rear of the test set. You mentioned, that those coils can adjust somehow. How i can do it?
Coils has 3.5mm connectors. Would it be good idea to remove coils and clean connectors on coil's and test set end's?
We don't use test set's internal 90dB steap attenuators, but when put Port 1 on 10dB position raw S11 linmag repeatability became even better but no significant improvements on phase
stability. Phase stablity with 10dB internal attenuation is now around max +/- 0.6deg from mean value.

感谢您对这些线圈的建议。
测试装置后部有两个线圈。
你提到过，那些线圈可以以某种方式调整。
我怎么能这样做？
线圈有3.5毫米连接器。
在线圈和测试装置端部拆下线圈和清洁连接器是否是个好主意？
我们不使用测试装置的内部90dB steap衰减器，但是当将端口1置于10dB位置时，原始S11 linmag重复性变得更好但相位稳定性没有显着改善。
具有10dB内部衰减的相位稳定性现在与平均值相差最大+/- 0.6度。



     以下为原文

  Thanks your advices about those coils. There is two of those coils on rear of the test set. You mentioned, that those coils can adjust somehow. How i can do it?
Coils has 3.5mm connectors. Would it be good idea to remove coils and clean connectors on coil's and test set end's?
We don't use test set's internal 90dB steap attenuators, but when put Port 1 on 10dB position raw S11 linmag repeatability became even better but no significant improvements on phase
stability. Phase stablity with 10dB internal attenuation is now around max +/- 0.6deg from mean value.

感谢您对这些线圈的建议。
测试装置后部有两个线圈。
你提到过，那些线圈可以以某种方式调整。
我怎么能这样做？
线圈有3.5毫米连接器。
在线圈和测试装置端部拆下线圈和清洁连接器是否是个好主意？
我们不使用测试装置的内部90dB steap衰减器，但是当将端口1置于10dB位置时，原始S11 linmag重复性变得更好但相位稳定性没有显着改善。
具有10dB内部衰减的相位稳定性现在与平均值相差最大+/- 0.6度。



     以下为原文

  Thanks your advices about those coils. There is two of those coils on rear of the test set. You mentioned, that those coils can adjust somehow. How i can do it?
Coils has 3.5mm connectors. Would it be good idea to remove coils and clean connectors on coil's and test set end's?
We don't use test set's internal 90dB steap attenuators, but when put Port 1 on 10dB position raw S11 linmag repeatability became even better but no significant improvements on phase
stability. Phase stablity with 10dB internal attenuation is now around max +/- 0.6deg from mean value.

感谢您对这些线圈的建议。
测试装置后部有两个线圈。
你提到过，那些线圈可以以某种方式调整。
我怎么能这样做？
线圈有3.5毫米连接器。
在线圈和测试装置端部拆下线圈和清洁连接器是否是个好主意？
我们不使用测试装置的内部90dB steap衰减器，但是当将端口1置于10dB位置时，原始S11 linmag重复性变得更好但相位稳定性没有显着改善。
具有10dB内部衰减的相位稳定性现在与平均值相差最大+/- 0.6度。



     以下为原文

  Thanks your advices about those coils. There is two of those coils on rear of the test set. You mentioned, that those coils can adjust somehow. How i can do it?
Coils has 3.5mm connectors. Would it be good idea to remove coils and clean connectors on coil's and test set end's?
We don't use test set's internal 90dB steap attenuators, but when put Port 1 on 10dB position raw S11 linmag repeatability became even better but no significant improvements on phase
stability. Phase stablity with 10dB internal attenuation is now around max +/- 0.6deg from mean value.

uppp ...一些奇怪的原因我的转发复制所以我的时代，对不起



     以下为原文

  uppp...some strange reason my re: post dublicated so my times, sorry

不需要道歉 - 我们会将重复内容留在那里，因为它可以帮助我们的支持团队。
到目前为止，我们无法复制重复的问题。



     以下为原文

  No apology needed - we'll leave the duplicates there as it may help our support team. So far we are unable to replicate the duplicate issue.

不需要道歉 - 我们会将重复内容留在那里，因为它可以帮助我们的支持团队。
到目前为止，我们无法复制重复的问题。



     以下为原文

  No apology needed - we'll leave the duplicates there as it may help our support team. So far we are unable to replicate the duplicate issue.

测试



     以下为原文

  Test

关于线圈变换和漂移问题的主要猜测有什么创意评论和/或想法吗？
Normaly我们使用大约60厘米的测试端口电缆进行1端口或2端口测量校准。
如果我理解正确，那么在测试装置后面使用那些1米线圈是正常的。
我注意到8510C校准菜单在几秒钟内有一个软键“端口扩展”。
我应该保持零吗？
8510C用户手册我没有找到有关该设置的任何信息。
出厂预设将其设置为0秒，这似乎是默认值。



     以下为原文

  Any creative comments and/or ideas for my main guestion about that coil changings and drift issue? Normaly we using around 60cm test port cable(s) where we do the 1-port or 2-port measurement calibration.
That case is normal to use those 1 meter coils on rear of  the test set if i have understood right. I noticed that 8510C calibration menu has a softkey "Port extension" in seconds. Should i keep it always zero? 8510C user manual i didn't find any information about that setting. Factory preset set it to 0sec which seems to default value.

当无法在非连接器放大器的输入端进行校准时，端口扩展是一个非常有用的功能。
我通常校准同轴电缆的末端并将短“猪尾”焊接到DUT，通常位于PCB上。
然后我将校准端连接到我的短尾纤，将DUT附近的尾纤焊接端短路（短路比开路更好），并将端口延伸调整为史密斯圆图中的短路。
这是一个后期计算功能，因此它不会影响您的测量（对数幅度视图），但它在史密斯圆图中的显示方式（包括相位）。
有些分析仪还可以对振幅进行补偿，就像您尝试使用重型分析仪站在地面上测量高位天线一样，长距离同轴天线将为您提供可以补偿的损失，而无需
爬上校准程序。
论坛中可能已经有很多关于此的内容并在手册中进行了描述。



     以下为原文

  Port extension is a very useful feature that you want to use when it is not possible to calibrate at the input of your non-connectorized amplifier as an example. I typically calibrate the end of my coax and solder a short "pig-tail" to the DUT, typically located on a PCB. Then I connect the calibrated end with my short pigtail, short circuit the soldered end of the pigtail near the DUT (a short is better defined than an open) and adjust the port extension to look like a short in the Smith chart. This is a post calculation feature so it will not affect your measurement (log magnitude view) but how it looks on screen in the Smith chart (phase included). Some analyzers also have a compensation for amplitude in the same way as if you try to measure a high located antenna with your heavy analyzer standing on ground, the long coax up to the antenna will give you losses that is possible to compensate for without having to climb for the calibration procedure.
There is probably a lot written in the forum about this already and described in the manuals.

如果您查看原始S11阶段或延迟（未校正），您可以通过在后部添加一根延长电缆（更好地使用半刚性电缆）来更改因子环，直到S11的阶段为平坦（零延迟）。
这里的想法是测试和参考通道上的电缆长度（环路在ref通道中）将是相同的，加热和冷却将导致相同的膨胀量，因此跟踪将更稳定w.r.t.
相。



     以下为原文

  if you look at the raw S11 phase or delay (without correction) you can change the factor loop by adding a little extension cable (better use semi-rigid cable) to the rear until the phase of S11 is flat (zero delay).  The idea here is that the cable length on the test and reference channels (loops are in the ref channel) will be the same, and heating and cooling will cause the same amount of expansion, and so the trace will be more stable w.r.t. phase.