Rise / Fall advanced trigger introduction | PicoScope 7

[Music] in this video we'll be looking at the picoscope 7 rise and fulltime Advanced

triggers to illustrate the trigger we'll be using this waveform that you see on the display it's a low speeed 1.25 khz

regular waveform with controlled um rise and fall times that you see there um if we expand that waveform a little bit

use the rulers we can see that the rise and fall time is something in the order of 155 160 microc something like

that and that that is representative of a good waveform um if something other than that happens we want to know about it so I've

set the picoscope to run and you can see pretty well immediately that there are some glitches in there there are something that's going wrong so what I want to do now is take go to the next

stage and use the advanced trigger to isolate those particular points that are going wrong that will perhaps enable us to correlate those errors with something

else in the system that's that's causing it cause and effect analysis in other words so I'll hold that for a moment go

into the trigger and I'm going to move from having the type as a simple Edge and select the rise and full time

trigger and there are one or two additional settings now in additional in addition to the source um and the the pre-trigger setting there are two

thresholds that I need set for the uh for the rise and the full-time um conditions first of all the the threshold the upper threshold let's set

that to 3 Vols and the lower threshold let's set that was about three of volt and you can see that

represented now there on the bar and they back in what I want to do I want to know

first of all if there is any edges that are triggering faster than a particular time far so less than and I can set a

time here let's set that say to 100 seconds but micros seconds and then set the picoscope to

run and almost immediately well in fact immediately we can see yes there are um Regular

occurrences of an edge here that is that is definitely too fast so if I expand that a little bit and do what we did before with

the um with the rollers we can see in this case that uh I've got a rise time here of a

little under 70 micros so that would be representative of an error condition that is too fast in the uh in the circuit that we're um that we're trying

to test um just for a bit of fun why don't we do it the other way around so let's set the time condition to greater than

but this time set the time to let's go for 220 micros

220 let's see what happens and yeah once again um we can see here there are occurrences of this edge

here um which we can expand a little bit and same trick with the with the rulers let's have a look at what the rise time of that is should be more than 200

micros and yes it is we we've got some of those edges now that are regularly repeating at around the 300 microc mark

so that also would be an error condition in the uh in the device scenario that I

described before so that's very simply how to isolate uh errors in um in rise

and full times in in a in a device under test rise and full time triggering has many applications um high-speed design

um EMC compliance uh pre compliance design that sort of thing so it's it's an extremely useful tool in um in a lot of

applications um the advanced trigger the ryzen full-time Advanced trigger um is now available on all currently available

picoscope models currently on the market so the the picoscope 2000b series the 3000d series The 4,000

a series The 5000 D series and the 6000 E Series all have the the ryzen fulltime Advanced trigger so I hope that's

something that you'll find useful and um enable you to debug your circuits and get your products to Market even faster than before thanks for

watching [Music]