Tom Bruhns wrote:
> On Aug 13, 12:19 pm, Joerg <notthisjoerg...@removethispacbell.net>
> wrote:

>>Hello Folks,

>>Question: It seems that most portable DSOs in the 200MHz/1GSPS class
>>don't offer delayed trigger anymore which makes pulse-echo measurements
>>a real pain. Why don't they?

>>After all it's just a simple counter that is needed. Same for hold-off
>>which typically ain't there either :-(

>>Beats me but IIRC I used delayed trigger on a lower end TDS220 although
>>its data sheet said that it could not do it. However, that scope had
>>some other serious issues (noise) so I asked the client to obtain a used
>>2265. Old Faithful, of course, always has delayed trigger but sure
>>enough the plastic clutch for that function fell apart right away.
>>Designing a trigger delay into an analog scope is no small feat but for
>>a DSO it should be really easy.

>>--
>>Regards, Joerg

>>http://www.analogconsultants.com

> Is this a "when are you going to stop beating your mother" sort of
> question?  Check out the Agilent 5000 series of scopes, listed as
> "new" on the Agilent web site today.  Trigger delay range:  pre-
> trigger, the greater of 1 screen or 125usec; post-trigger 1 second
> range minimum, up to 500 seconds for slower timebase settings.

> On bottom-end scopes, especially ones with deep memory, trigger delay
> may well be dropped for a combination of reasons:  the desire to
> differentiate the product line, and the lower need given lots of
> memory--acquire once, inspect in detail wherever you want.  One of my
> DSOs doesn't have specific trigger delay, but does let you set up the
> display of any portion of the memory, as a "delayed trace".