6424E Triggering using AUX as trigger input, programming by Matlab

LinqingLuo · Post by **LinqingLuo** » Sat Jun 12, 2021 4:11 am

Hi,

I am working on using Matlab to collect data using Picoscope 6424E. I have downloaded the SDK and drivers. I try to modify the Matlab example by changing the trigger input.
In the original example, the trigger is at Channel A, the code is shown below:

Code: Select all

enable = 1;
source = trigger_aux;
threshold = 1000; %mV
direction = ps6000aEnumInfo.enPicoThresholdDirection.PICO_RISING;
delay = 0;
autoTriggerMicroSeconds = 1000000; %us

[status.setSimpleTrigger] = invoke(ps6000aDeviceObj, 'ps6000aSetSimpleTrigger', enable, 0, threshold, direction,...
    delay, autoTriggerMicroSeconds);

However, this function only support Channel A, B, C, D. The Aux trigger cannot be enabled by this code.

I try to use another method to set the trigger channel as following:

Code: Select all

actionC = ps6000aEnumInfo.enPicoAction.PICO_CLEAR_ALL;
ps6000aStructs.tPicoCondition.members.source=ps6000aEnumInfo.enPicoChannel.PICO_TRIGGER_AUX;
ps6000aStructs.tPicoCondition.members.condition=1;
[status.setTriggerChannel] = invoke(ps6000aDeviceObj, 'ps6000aSetTriggerChannelConditions', ps6000aStructs.tPicoCondition.members,1,actionC);
ps6000aStructs.tPicoDirection.members.channel=ps6000aEnumInfo.enPicoChannel.PICO_TRIGGER_AUX;
ps6000aStructs.tPicoDirection.members.direction=2;
ps6000aStructs.tPicoDirection.members.thresholdMode=0;
[status.setTriggerDirection] = invoke(ps6000aDeviceObj, 'ps6000aSetTriggerChannelDirections', ps6000aStructs.tPicoDirection.members,1);
ps6000aStructs.tPicoTriggerChannelProperties.members.thresholdUpper=2500;
ps6000aStructs.tPicoTriggerChannelProperties.members.thresholdUpperHysteresis=0;
ps6000aStructs.tPicoTriggerChannelProperties.members.thresholdLower=2500;
ps6000aStructs.tPicoTriggerChannelProperties.members.thresholdLowerHysteresis=0;
ps6000aStructs.tPicoTriggerChannelProperties.members.channel=ps6000aEnumInfo.enPicoChannel.PICO_TRIGGER_AUX;
[status.setTriggerChannelProperty] = invoke(ps6000aDeviceObj, 'ps6000aSetTriggerChannelProperties',ps6000aStructs.tPicoTriggerChannelProperties.members,1,0,1000000);

Again, the code has error.

Could I ask how to use the AUX as trigger input?

Thank you very much!

BTW, I have my code running on Picoscope 6404D very well. How to change that code to Picoscope 6424E directly?