Setting initial backlight vale in PV

Discuss issues and ideas you have to configuring displays with PowerVision
drphil69
Posts: 139
Joined: Wed Mar 02, 2011 5:59 pm

Setting initial backlight vale in PV

Post by drphil69 » Wed Mar 20, 2013 12:27 pm

Hello,

For some reason I am having a difficult time setting the initial backlight value in the configuration tool. I am using a PV450 and the newest 2.6 configuration software.

I was able to set Day/Night = 2 for the initial setting, so that it comes up in night mode (customer preference). I also set Brightness.Night = 90. After downloading, it powers up initially bright, then immediately dims to a very low value. It does the same thing after cycling power. Is there something in the provided code that could change the night brightness back to some default value?

I can change it manually, but my customer does not want that. They want to be able to upload the program to a new display and run without messing with any of those settings.

Thanks,
Phil
drphil69
Posts: 139
Joined: Wed Mar 02, 2011 5:59 pm

Re: Setting initial backlight vale in PV

Post by drphil69 » Wed Mar 20, 2013 1:01 pm

I my have found the issue. In the calculation for Brightness.Day_Temp, Brightness.Day_Temp is used in the calculation. In the calculation for Brightness.Night_Temp, Brightness.Day_Temp is also in the calculation. I believe in the night calculation it should contain the night_temp, not the day_temp.
drphil69
Posts: 139
Joined: Wed Mar 02, 2011 5:59 pm

Re: Setting initial backlight vale in PV

Post by drphil69 » Wed Mar 20, 2013 2:40 pm

Update - that did not work. There's no Brightness.Night_Temp variable. Not sure why. Also, if I change the brightness manually, then cycle power, it goes back to the very dim screen.
drphil69
Posts: 139
Joined: Wed Mar 02, 2011 5:59 pm

Re: Setting initial backlight vale in PV

Post by drphil69 » Wed Mar 20, 2013 3:07 pm

Update - got it. I started with a previous program, and it appears they only used day setting, so the code for night was wrong.