怎么在B2902A上通过SCPI设置自动触发和屏幕转储

我试图通过SCPI命令触发扫描协议。
我希望能够将触发器设置为“自动”，并且相当于按下机器上的触发按钮。
我搜索程序员指南和命令专家，只找到使用手动触发器的命令。
有没有办法将触发器设置为自动，然后使用TRIG：ALL：IMM命令触发电源？
我目前的代码如下。
现在它加载所有内容并按照预期显示图形，但它似乎没有触发。
首先，加载包含所有扫描参数的状态文件，然后：DISP：ENAB ON DISP：VIEW GRAP TRIG：ALL：IMM（@ 1：2）此时图像显示，它应该是新触发的数据集
，但它只显示最后收集的数据。
我也试图从电源获得屏幕转储。
我使用了HCOP：SDUM：FORM JPG和HCOP：SDUM：DATA？
命令并返回一些内容，但我不确定如何处理数据并将其转换为可查看的格式。
妮可，任何见解都会受到赞赏



     以下为原文

  I am trying to trigger a sweep protocol through SCPI commands. I want to be able to set the trigger on "auto" and do the equivalent of pressing the trigger button on the machine. I scoured programmers guides and command expert and only found commands to use the manual trigger. Is there a way to set the trigger to auto and then use the TRIG:ALL:IMM command to trigger the power supply?

My current code is below. Right now it loads everything and brings up the graph like it is supposed to, but it doesn't seem to trigger.
First, a state file with all of the sweep parameters is loaded, then:
DISP:ENAB ON
DISP:VIEW GRAP
TRIG:ALL:IMM (@1:2)
At this point the image shows and it should be a newly triggered data set, but it just shows the last data collected.  

I am also trying to get a screen dump from the power supply. I used the HCOP:SDUM:FORM JPG and HCOP:SDUM:DATA? commands and it returns something, but I'm not really sure how to deal with the data and get it into a viewable format.

Any insights would be appreciated,
Nicole