Infiniium 9000单触发器失败

我有一个运行固件3.50的MSO9104A。
我试图在波形的上升沿使用单个触发，在大约100 ms内上升到40V。
我试图通过GPIB自动化数据收集。
我的问题是，有时单个触发器失败 - 我可以看到触发器触发并显示波形，但屏幕然后立即变为空白并且触发器保持启用状态。
如果我循环DUT再次加速，我可以成功捕获下一个斜坡，并且触发器解除。
我知道第一个建议是升级到最新的固件，但发行说明没有提到解决这个问题。
相反，最新的固件更新更多是关于新硬件和选项。
除非我需要一个已知的修复或新的羽毛，否则我通常会谨慎升级。
问题间歇性地发生 - 有时我可以毫无问题地使用10+触发器，然后在接下来的几个触发器上出现问题。
它已经发生在GPIB编程和手动设置范围，虽然我已经能够使用GPIB尝试更多。
我尝试重新启动示波器，更改触发器级别，更改通道带宽以及将GPIB命令减少到最低限度。
以下是我通过GPIB发送的命令，在调试期间会有一些延迟。
添加延迟似乎没有帮助。
：syst：pres：syst：head off：chan1：disp on：chan1：scal 10：chan1：offs 30：tim：ref cen：tim：pos 80e-3：tim：scal 20e-3：trig：edge：slop pos
：trig：lev chan1,10：trig：swe sing：sing这一切似乎都正确地设置了范围，但偶尔我会得到失败的触发器。
我很感激帮助。



     以下为原文

  I have an MSO9104A running firmware 3.50. I am trying to use a single trigger on the rising edge of a waveform which ramps to 40V in about 100 ms. I am trying to automate data collection over GPIB. My problem is that sometimes the single trigger fails - I can see the trigger fire and display a waveform, but the screen then immediately goes blank and the trigger stays ARMed. If I cycle the DUT to ramp up again, I can successfully catch the next ramp, and the trigger disarms.

I know a first suggestion will be to upgrade to the latest firmware, but the release notes don't mention solving this issue. Rather, the latest firmware updates are more about new hardware and options. I'm typically wary to upgrade unless I need a known fix or new feather.

The problem occurs intermittently - sometimes I can go 10+ triggers without a problem, then have a problem on the next several triggers. It has occurred with GPIB programming and manually setting up the scope, although I've been able to try it a lot more with GPIB. I've tried rebooting the scope, changing the trigger level, changing channel bandwidth, and paring back my GPIB commands to the bare minimum.  

Here are the commands I'm sending over GPIB, with some delays sprinkled in during debugging. Adding delay doesn't seem to help.
:syst:pres
:syst:head off
:chan1:disp on
:chan1:scal 10
:chan1:offs 30
:tim:ref cen
:tim:pos 80e-3
:tim:scal 20e-3
:trig:edge:slop pos
:trig:lev chan1,10
:trig:swe sing
:sing

This all seems to setup the scope correctly, but then occasionally I get the failed trigger.

I appreciate the help.