SignalExpress

cancel
Showing results for 
Search instead for 
Did you mean: 

Triggering on frequency entering and leaving window SignalExpress Bug

In the recording options of SignalExpress,  when one sets up a trigger to trigger entering or leaving a window of frequencies, This does not work properly.

 

I was using a Signal Acquire Voltage step, then doing Tone extraction on the Voltage channel.  I hooked up a frequency generator to the voltage in.  As I ramped the frequency of the generator up and down expecting the trigger to start logging to disk, I was sadly dissapointed to not see this work properly.

 

As a side note, I also had a voltage threshold trigger set also, now that I think about it and the Trigger Logic was set to OR, but this shouldn't have anything to do with the problem

 

Can anyone Confirm?

Ben Yeske
0 Kudos
Message 1 of 4
(6,049 Views)
Please post your project and and as many details of your hardware setup as you can so we can reproduce this.  Thanks!
0 Kudos
Message 2 of 4
(6,034 Views)

This Problem has been confirmed and had been issued a CAR(Corrective Action Request) # 180783.

 

Ben Yeske
0 Kudos
Message 3 of 4
(6,025 Views)

The hardware involved was a USB-Compact Daq Chassis.  I was using the NI-9233.  The Recording log was set to trigger on leaving a window of frequencies.  The frequency parameter was acquired from the tone extraction step on an analog voltage channel.

 

Seems pretty straightforward to me, and one should be able to reproduce the inconsistent entering window/leaving window triggering behavior with a wide variety of hardware.

 

 

Ben Yeske
0 Kudos
Message 4 of 4
(6,023 Views)