Author Topic: Vantage Vue Back-Light  (Read 4019 times)

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Offline VaJim

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Vantage Vue Back-Light
« on: January 09, 2012, 05:02:40 PM »
I have a Vantage Vue and I'm thinking about leaving the back light (display) on during the night time hours.  Will this cause the inside temperature to rise?  I have it plugged into the AC.

 Anyone try this?

Thanks!

Offline dalecoy

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Re: Vantage Vue Back-Light
« Reply #1 on: January 09, 2012, 05:44:34 PM »
Many questions can be answered from the manual. 

Page 26 of the Vue Console manual:
"Note: When the console receives power from the AC adapter, the backlight remains on until it is
toggled off. Leaving the backlight on for an extended period of time raises the inside temperature
reading and lowers the inside humidity reading.

Offline 4wd

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Re: Vantage Vue Back-Light
« Reply #2 on: January 09, 2012, 05:51:58 PM »
By about 2C, but it varies so offsetting - though possible - not a good idea.

Offline VaJim

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Re: Vantage Vue Back-Light
« Reply #3 on: January 09, 2012, 07:01:27 PM »
Thanks...sounds like it's not a good idea and not many do it. 

Offline drstorm215

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Re: Vantage Vue Back-Light
« Reply #4 on: January 09, 2012, 08:00:56 PM »
I have a pro2 and leave it on at night.
Sure, it raises it up a good 3-4 degree's.
But I would rather be able to see all the outside data at a glance and have a wrong indoor tepmerature.(it just wouldn't be fun if it was dark).
 :grin:


Mike
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Offline dalecoy

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Re: Vantage Vue Back-Light
« Reply #5 on: January 09, 2012, 08:42:31 PM »
Thanks...sounds like it's not a good idea and not many do it. 

Leaving it on "at night" is different from leaving it on "all the time". 

I leave my VP2 backlights (2 consoles) on all the time, and have adjusted the offset so that the inside temperature and humidity readings are "correct" (as compared with other instruments placed near them).  Because inside temperature (and often humidity) are relatively constant, the offset works.

YMMV, of course.

Offline JACK10562

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Re: Vantage Vue Back-Light
« Reply #6 on: January 09, 2012, 09:02:41 PM »
You can very easily recalibrate the sensor display to offset for the increase in temp and decrease in humidity induced from leaving the console backlight on.

Note your baseline ("cold" console) readings, then leave the light on for several hours. Note the difference, and recalibrate the console display to show the base ("cold") readings. You're done. Just leave the backlight on.

Quote
Calibrating Temperature and Humidity
You can calibrate inside and outside temperature; and inside and outside humidity on your
Vantage Vue.
1. Select the temperature or humidity variable to be calibrated.
2. Press and release 2ND, then press and hold SET.
After a moment, the variable you’ve selected begins to blink.
Keep holding SET until the Calibration Offset message displays in
the Weather Center.
3. Press the + or - keys to add or subtract from the temperature offset value.
Inside and outside temperature are calibrated in 0.1° F or 0.1° C increments, up to a
maximum offset of +/ - 12.7 (°F or °C). The variable’s value will change and the Weather
Center shows the offset you have entered.
4. Press DONE to exit calibration.
« Last Edit: January 09, 2012, 09:04:17 PM by JACK10562 »
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Offline VaJim

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Re: Vantage Vue Back-Light
« Reply #7 on: January 10, 2012, 05:58:28 AM »
Thanks for the ideas on the 'offset'.  I may try that.  I did do that on my Envoy and it works fine. :grin:

Offline VaJim

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Re: Vantage Vue Back-Light
« Reply #8 on: January 19, 2012, 05:54:22 PM »
...one other question on this....for those of you who do leave your back light on have you experienced any problems (other than the temp rise).  I'm just wondering if it can shorten the back light life.

Thanks!

Offline SLOweather

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Re: Vantage Vue Back-Light
« Reply #9 on: January 19, 2012, 06:28:07 PM »
I haven't left mine on, but, from my LED experience, LEDs generally don't burn out so much as, over time, their output diminishes. I think that the "10,000 hour" life that some LEDs are quoted as having is the time that they drop to 50% output. A 365 day year has 8,760 hours in it.

That also depends on how hard the LEDs are driven. So, if you left your backlight on 24/7, you might notice dimming somewhere around 14 months from now, or longer. YMMV.

I was just thinking that it would be good to know how much current they draw and realized that I could measure the current of a console with the back light off and then on. And then I remembered the Current Draw and Battery Life table in the catalog...

According to the table on p 16 of the 2011 catalog, the back lights draw 160 ma. Now to examine a console and see how many LEDs there are.

Offline dalecoy

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Re: Vantage Vue Back-Light
« Reply #10 on: January 19, 2012, 06:34:09 PM »
...one other question on this....for those of you who do leave your back light on have you experienced any problems (other than the temp rise).  I'm just wondering if it can shorten the back light life.

Thanks!

I don't know yet.  Mine (2 consoles) have been continually on for something over 4 years (can't remember exactly - may be longer).  Still working OK, and I can't tell that the brightness has diminished - but of course I probably wouldn't notice because it would be so gradual.

Offline C5250

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Re: Vantage Vue Back-Light
« Reply #11 on: January 19, 2012, 10:47:12 PM »
According to the table on p 16 of the 2011 catalog, the back lights draw 160 ma. Now to examine a console and see how many LEDs there are.

From a quick look... 6 on each side. So a total of 12, that suggests each is using about 13mA each. The life projection is usually based on "typical" current (usually 20 mA) and less current means longer life. A little related side note, I always designed for LEDs to use about 10 mA, as that would result in a much longer life.

I too have had a VP2 console running with the backlight on for a few years now with no notable illumination loss.
Precious little in your life is yours by right and won without a fight.

Offline VaJim

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Re: Vantage Vue Back-Light
« Reply #12 on: January 20, 2012, 03:40:27 PM »
Thanks for all the responses.  For those of you who do leave the back light on (24/7), do you apply a temp/humidity offset?

Offline dalecoy

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Re: Vantage Vue Back-Light
« Reply #13 on: January 20, 2012, 04:02:43 PM »
Thanks for all the responses.  For those of you who do leave the back light on (24/7), do you apply a temp/humidity offset?

Yes, of course.

Offline mike_b

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Re: Vantage Vue Back-Light
« Reply #14 on: January 20, 2012, 04:38:19 PM »
Thanks for all the responses.  For those of you who do leave the back light on (24/7), do you apply a temp/humidity offset?
My offset to correct the back-light influence on my VP2 console is -5 degrees F temperature and +5 percent humidity.
Mike, in the Cascade Mountains of Oregon
Davis Vantage Pro2, Cumulus software.

Offline C5250

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Re: Vantage Vue Back-Light
« Reply #15 on: January 20, 2012, 11:06:43 PM »
For those of you who do leave the back light on (24/7), do you apply a temp/humidity offset?

Of course, I don't recall the exact offset, and it's not perfect either. My sling psychrometer lives next to the Console and I tried to match it to that as near as possible.
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Offline VaJim

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Re: Vantage Vue Back-Light
« Reply #16 on: January 23, 2012, 05:59:47 PM »
Thanks to all.

I tried the different work arounds, light lit, small lamp, etc, and none seem pleasing.  Too bright for my taste.  I guess I'll leave the night viewing duties to the Rainwise. 8-)

Offline ch8ch

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Re: Vantage Vue Back-Light
« Reply #17 on: January 14, 2018, 08:52:53 AM »
I left my VUE light on all the time for a few months...it shut off and now when I use it it only stays on for a few minutes and turns off.



 

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