DAQExpress Analog Triggers

[bcoates]

Hello,

We have been using DAQExpress at my company for some time after switching from SignalExpress. One feature that I am having a hard time with is the Trigger Function with Analog signals. When trying to configure a Start Trigger with my hardware connected, the only option I can select is for a Digital Edge Trigger, the other options for Analog Edge, Analog Window and Time trigger are greyed out and not able to be selected.

Previously in SignalExpress there was no issue to create an analog trigger using other channels you are measuring.

Hardware I am using is a cDAQ-9174 chassis with several different cards (9215, 9203, 9217 in this case).

I tried looking through NI's site but wasn't able to find any information about this. Any help would be appreciated.

Thanks

EDIT: After some further research it looks like this may be because I do not have DAQmx installed, going to try this first.

[Apex_Waves]

Correct, you will need to install the newest version of DAQmx. You can also reset the configuration data in NI MAX by going to the tools menu- this will remove all devices from NI MAX and will require a computer restart. You can also reinstall DAQexpress and power cycle all your devices.

Should you need them, here are some helpful links: 
Info on DAQexpress Triggering
cDAQ Manual

[kakas]

I have the same problem with our USB-6216. Analog triggering worked well with SignalExpress, but switching to DAQExpress, only digital trigger is available. I have updated all software including DAQmx. All the units were power cycled. No change, very frustrating.

The trigger info referred by Apex_Waves does not even mention analog triggering.

I also do not see setting of pre-trigger recording which was available with Signal Express.

[kakas]

I went back to SignalExpress, and now analog trigger also disappeared from there.

What is going on?

[bcoates]

What I found after researching my original issue is that there was native analog triggering built in to SignalExpress and this feature was not included in DAQExpress. You can still use analog triggering in DAQExpress but only if you are using one of the 9205/9206/9775 cards. Those cards can be used for analog triggering, which is what I did in my case.

You also may be able to create a VI function in DAQExpress for triggering but I have not had the time to try this yet.

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YIV5CAO&l=en-CA 

[kakas]

What I found that analog triggering is not working with Signal Express any more. Seems that there is a piece of software which (after updating) blocks the analog triggering.

I found this article detailing the triggering capability of different devices.

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000kIhASAU

Our device does support any analog triggering any more. 

Why NI stepped back and unsupported this feature?