E8257C选项007斜坡扫描问题

我有一个选择007的E8257C，我很难过，当我在斜坡模式下扫描时，我得到一个错误508 Frac N解锁。
主要是1-3GHz是我可以复制故障的频率范围。
我认为这可能与服务说明E8257C-15有关。
我已经取代了Frac N.我已经进行了调整。
我升级Fw包括选项，我尝试重新加载或执行cal常量的恢复，认为可能是损坏的数据，然后重新进行TME调整。
这不会在步骤扫描或列表中产生任何类型的错误。
在相同的频率范围内。
但在步骤中我可以看到Freq是不正确的。
从我看到的情况来看，变量预标量上有一个切换点。
我正在使用实时规范。
我可以将扫描速度降低到2秒仍然在斜坡上，但这是我在保持解锁错误时最慢的速度。
我可以看到一个看起来像FMing的切换点。
再次，这似乎与服务说明E8257C-15有关。
我已经阅读了足够的知道在RAMP模式下不使用采样器所以这给我留下了Frac N，Reference assy或YIG驱动程序。
任何想法将不胜感激。
Joe L编辑：jlubecky于2013年9月18日下午1:20编辑：jlubecky于2013年9月18日下午2:11



以下为原文

I have an E8257C with opt 007 and I am stumped I am get ting an error 508 Frac N unlocked when I sweep in ramp mode. mainly 1-3GHz is the freq range I can duplicate the failure. I thought this may be related to the service note E8257C-15. I have replaced the Frac N. I have run the adjustments. I upgraded Fw including options, I tried reloading or doing a restore of cal constants thought maybe corrupt data, then reran TME adjustments. This doesn't give any kind of error in step sweep or list. over same freq range. But in step I can see Freq is incorrect. From what I'm seeing it looks like there is a switching point on the variable prescalar. I am using a realtime spec an. and I can slow down the sweep down to 2 second still in ramp but this is the slowest I can go while maintaining the unlock error. I can see a switching point that looks like its FMing. again this really seems like its related to the service note E8257C-15. I have read enough to know the sampler is not used when in RAMP mode so this leaves me with Frac N , Reference assy, or YIG driver. any ideas would be greatly appreciated.

Joe L

Edited by: jlubecky on Sep 18, 2013 1:20 PM

Edited by: jlubecky on Sep 18, 2013 2:11 PM