Does LJLogUD support quadrature encoder outputs from the U3

2 posts / 0 new

Thu, 08/20/2015 - 14:14

rmoleman

I can see from teh datasheet that the U3 supportes 1 quadrature encoder connection, but it is not clear to me if counter inputs can be dispalyed with the LJLogUD.

I am planning on connecting 2 voltage output sensors and 1 rotary encoder and woudl like to see the output of all three sensors on one screen.

Thu, 08/20/2015 - 17:07

LabJack Support

Yes, you can display timers

Yes, you can display timers and counters using the special channel numbers here:

https://labjack.com/support/datasheets/u3/operation/stream-mode/digital-...

See the comments here about dealing with the 32-bit signed value you get from a quadrature mode timer:

https://labjack.com/support/software/applications/ljlogud/ljlogstream-sc...

You can't configure the timer in LJLogUD, so do that using "config defaults" in LJControlPanel. Actually, before doing any of this, you should test the quadrature input using the "test" panel in LJControlPanel.