无法识别探测器

还有一些事情需要注意。
当我拿到我的1158A时，我遇到了类似的问题。
当我将它连接到示波器时，它会立即弹出一个方框，告诉我它不兼容。
然而，在拆卸探头时，我发现它有一个吹制的5v调节器。
在更换它并重新组装探头后，示波器立即识别它并且它完美地工作。
但是，在这种情况下，框会在几秒钟后弹出，而不是立即弹出。
在弹出消息之前连接探针时，范围似乎悬而未决。
此外，探针本身似乎也是功能性的。
我拆开了探头并尝试插入弹簧针的子集并在示波器上进行尝试。
似乎当中心三个弹簧针被移除并且探头连接到示波器时，示波器根本无法识别它（它的作用就像没有探头连接），但示波器显示屏上的迹线反映了输出
探头中的差分放大器，表明探头的模拟部分工作（例如，当我得到它时，它没有像1158A一样短路）。
是否有人知道更多关于autoprobe界面的信息，可能会对这里可能发生的事情有所了解？
我在EEV博客上发现了一个论坛帖子，表明探针使用串行EEPROM进行识别，1130A内部的电路板上有一个ST 24C02 I2C EEPROM。
是否存在内容可能已损坏的可能性，只需重新编程EEPROM可能会使探针再次完全正常工作？



     以下为原文

  A few more things to note, actually.  When I got my 1158A, I had a similar problem.  When I connected it to the scope, it immediately popped up a box telling me that it was incompatible.  However, upon disassembling the probe, I discovered that it had a blown 5v regulator.  After replacing it and reassembling the probe, the scope immediately recognized it and it worked perfectly.  

In this case, however, the box pops up after several seconds, not immediately.  And the scope seems to hang between when the probe is conneted before the message pops up.  Also, the probe itself also seems to be functional.  I disassembled the probe and experimented with inserting subsets of the pogo pins and trying it on the scope. It seems that when the center three pogo pins are removed and the probe is connected to the scope, the scope doesn't recognize it at all (it acts like there is no probe connected), but the trace on the scope display reflects the output of the differential amplifier in the probe, indicating that the analog portion of the probe works (e.g. it isn't shorted like the 1158A was when I got it).  

Is there anyone who knows more about the autoprobe interface that might be able to shed some light on to what might be going on here?  I found a forum post on the EEV blog that indicates the probes use a serial EEPROM for identification, and the board inside the 1130A has an ST 24C02 I2C EEPROM on it.  Is there any possibility that is contents might have gotten corrupted and simply reprogramming the EEPROM might render the probe fully functional again?

它可能在安捷伦维修中心进行维修。
它不是用户可编程的，也不是可修复的。
人



     以下为原文

  It's probably repairable, at an Agilent repair center. It's not user programmable, or repairable.

Al

根据安捷伦网站的说法，他们不会修理探头，他们只能以2万美元的价格更换它们。
我不认为我需要一个全新的探测器，只需重写I2C EEPROM，这对任何恰好使用I2C的微控制器都应该是可行的。
我尝试将逻辑分析仪连接到1130A和1156A探头的探头ID I2C引脚。
对于我的1156A，它会读出一次EEPROM。
对于1130A，它在放弃之前至少读出3次。
我还在AVR板上写了一个小程序来读出内存内容。
他们看起来并没有明显腐败，但我不知道该寻找什么。



     以下为原文

  According to the Agilent website, they don't repair the probes, they only replace them for about $2k.  I don't think I need a whole new probe, just a rewrite of the I2C EEPROM which should be doable with any microcontroller that happens to speak I2C.  

I did try connecting a logic analyzer to the probe ID I2C pins for both the 1130A and the 1156A probes.  For my 1156A, it reads out the EEPROM once.  For the 1130A, it reads it out at least 3 times before giving up.  I also wrote a small program on an AVR board to read out the memory contents.  They don't look obviously corrupted, but I have no idea what to look for.

写入EEPROM的数据是专有的。
它可能包括产品编号，序列号和其他识别信息。
对于一些非常高BW的探测器，它包括S参数信息，因此示波器可以校正“系统”对探头尖端的响应。
如果您有另一个1130探测器，您可能可以通过比较找出它，但除此之外我会说探测器不可用。
人



     以下为原文

  The data written in the EEPROM is proprietary. It might include the product number, serial number, and other identifying information. For some of the very high-BW probes, it includes S-Parameter information, so that the scope can correct the response of the 'system' to the probe tip. If you had another 1130 probe, you might be able to figure it out by comparison, but otherwise I'd say that probe is not usable.

Al