HP Prime Screen Dimming Hack

[JDW]

Thank you for the tip about the 5 second minimum. And thank you, Tim, for initially alerting me to this great new feature.

For those of you who hate guesswork and love PRECISE STEPS like I do, the follow example shows how to use 5000 (5 seconds) for display dimming while in RPN mode:

1. Type 5000 and press Enter
2. Press Blue-Shift and then the ( ) key (to get single quotes ' ')
3. Press Vars
4. Press 7
5. Press 7 again (you should then see 'TDim')
6. Press Enter
7. Press Blue-Shift
8. Press EEX (for Sto)
9. Turn Prime OFF & ON, then wait 5 seconds and see the screen dim.

Now when you press the Vars key and then 7 and 7 and Enter, you should that the content of the TDim variable is this:

#1388:30h

By default the Prime dims after 30 seconds, and the contents of the TDim variable in that case is this:

#7530:30h

I don't know the maximum backlight duration (there obviously is a maximum if there is a minimum), but I can confirm that a setting of 5 minutes (300000) works fine. And note that if you use 5 minutes, the screen will not DIM at that point but instead the Prime will power OFF.