HP 8590A Freq和Ampl Cal信息在什么文档中有

您可以从几个二手书销售商处购买服务手册。
本手册将描述自我对齐的作用。
您的分析仪有特定问题吗？
戴夫



     以下为原文

  You can purchase a service manual from several used book sellers.  This manual will describe what the self alignment is doing.

Do you have a specific problem with your analyzer?

Dave

戴夫：谢谢你的回复。
我有我认为的'8590A上的整套HP文档，并且描述了几十（！）个自测/ CAL例程和子例程中发生的事情。
我确实有一个具体的问题。
这个单位是我的“学校”单位 - 我买的零件，经过几年的时间成为修复和实验的试验品。
它已经改进到了除了CAL AMPL的最后几步之外的所有步骤。
我可以看到，当屏幕上的校准信号远离屏幕高档时，会出现问题。
然后，果然 - 失败。
我刚才没有把这个单元放在替补席上（并且替补席大约有三个项目），但我怀疑失败是在一些较窄的带宽测试中。
我已经从已知良好的分析仪中交换了模拟模块，同样的故障仍然存在 - 让我怀疑A / D或数字电位器设置中的故障。



     以下为原文

  Dave:

Thanks for the reply.

I have what I believe is the whole set of HP documentation on the '8590A and descriptions of  what is going on in the dozens (!) of self-test/CAL routines and sub-routines just isn't there.

I do have a specific problem.  The unit is my "school" unit - the parts junker I bought and that over a several year period gets to be the guinea pig for fixes and experiments. It has improved to the point that it passes all but the last few steps of CAL AMPL.  I can see that there is going to be an issue when the cal signal on the screen goes well off the screen upscale.  Then, sure enough - FAIL.

I don't have the unit on the bench just now (and the bench is about three projects deep), but I suspect that the failure is in some of the narrower bandwidth tests.  I've swapped analog modules from a known good analyzer and the same failures persist - making me suspicious of failures in A/D or digital pot settings.