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Sampling at continuous triggers

Question asked by sivan on Apr 18, 2014
Latest reply on Apr 22, 2014 by algoss
Hi,
    As i am very much new to the usage of analyzers and such instruments themselves, i am a bit lost in trying to probe the signals as per my requirement.I have 16803A logic Analyzer. 
  
  My requirement is: 

  while(1)
  {
      if( EOC signal make a high to low transition  )
              sample the data at that instant
      else
          {
             Dont sample
             wait for the trigger
          }
    }


The trigger event occurs at regular intervals, and data needs to be sampled only at the falling edge of  EOC signal and not continuously. 

This is what the  trigger condition i had set:
i) If  bus/signal EOC falling edge occurs  1 consecutively
    then Trigger and fill memory

Sampling condititions
Asynchronous sampling
1) Sampling options:Full channel,500 Mhz
2) Sampling period : 2ns 
3) Acquisition depth : 1M

50% Poststrore

But what guess happening is that, it captures data at the first trigger event ( high to low of EOC) and continues capturing forever till i stop.But my EOC signal makes a low to high transaction at which i expect to stop capturing data.

1) Will trigger and fill memory will fill entire 1 M space ?
2) How do i stop sampling when the EOC is low or at low to high ?
 
Can anyone suggest  me a solution on this please?
Please forgive my ignorance.

Cheers
sivan  

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