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Guest rkruijer

Barometric Setting

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Hi,From the Panel SDK:(>K:BAROMETRIC) Syncs altimeter setting to sea level pressure, or 29.92 if above 18000 feetIs it possible to change the 18000 ft to another figure somewhere?Thanks for your time.Roelof

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I never knew about the 18000 ft, but i've been successfully using that command in a button to reset my altimiter at much lower altitudes... around 3000 to 7000 ft.Have I just been lucky that it worked so far?Scott / Vorlin

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That's a bit misleading, since you can send that command at any altitude you wish. FL180 is just the default transition altitude used by the sim. The command simply sets the kohlsman to 29.92 when activated.

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>That's a bit misleading, since you can send that command at>any altitude you wish. FL180 is just the default transition>altitude used by the sim. The command simply sets the>kohlsman to 29.92 when activated.That is correct but only when you are not ONLINE and/or not using real weather! I forgot to mention it but I am thinking about an ONLINE situation!From my experience being ONLINE:Below 18000 it will set kohlsman to the real local QNH Above 18000 it will set kohlsman to 1013 being the US Transition Level.Of course you can set it with 1013.2 16 * (>K:KOHLSMAN_SET) at an altitude other than 18000.For Europe 18000 is very unrealistic. I would like to be able to adjust it, depending on the country I am flying in!After all. MS does not give Europe a discount do they? :-)Roelof

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>>That's a bit misleading, since you can send that command at>>any altitude you wish. FL180 is just the default transition>>altitude used by the sim. The command simply sets the>>kohlsman to 29.92 when activated.>>That is correct but only when you are not ONLINE and/or not>using real weather! Funny, 'cause I just checked this out while parked on the ramp at KGYY, using real weather and while online with VATSIM...I was able to toggle between QNH and 29.92 (1013.2) with complete freedom... :-wave

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>Funny, 'cause I just checked this out while parked on the ramp>at KGYY, using real weather and while online with VATSIM...>>I was able to toggle between QNH and 29.92 (1013.2) with>complete freedom... :-wave Hi Bill,Can you tell me what you mean with toggle?What do you do to toggle between QNH and 1913.2Are we talking about XML programming?Roelof

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Hi,Try this one and see what happens:(L:some var,enum) 0 == if{ 1 (>L:some var,enum) 16210.5 (>K:KOHLSMAN_SET) } els{ 0 (>L:some var,enum) (>K:BAROMETRIC) } QNH --> QNE vv. all over the world.Jan"Beatus ille qui procul negotiis..."

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"QNH --> QNE vv. all over the world."QNE = What indication will my altimeter give on landing at ... (place) at ... hours, my sub-scale being set to 1013.2 millibars (29.92 inches)? I.e QNE is a height.QNH = What should I set on the subscale of my altimeter so that the instrument would indicate its elevation if my aircraft were on the ground at your station? I.e. QNH is a Kollsman setting.http://www.kloth.net/radio/qcodes.php

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>Hi,>>Try this one and see what happens:>>>(L:some var,enum) 0 == >if{ 1 (>L:some var,enum) 16210.5 (>K:KOHLSMAN_SET) } >els{ 0 (>L:some var,enum) (>K:BAROMETRIC) } >>>QNH --> QNE vv. all over the world.>>Jan>>"Beatus ille qui procul negotiis..."Thanks Jan But that I have covered. I only wanted to know if this 18,000 ft could could be changed on which FS9 supposedly gives the QNE rather then QNH when using (>K:BAROMETRIC)I take it that this default setting cannot be changed leaving us using 16210.5 (>K:KOHLSMAN_SET)Roelof

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>"QNH --> QNE vv. all over the world.">>QNE = What indication will my altimeter give on landing at ...>(place) at ... hours, my sub-scale being set to 1013.2>millibars (29.92 inches)? I.e QNE is a height.>>QNH = What should I set on the subscale of my altimeter so>that the instrument would indicate its elevation if my>aircraft were on the ground at your station? I.e. QNH is a>Kollsman setting.>>http://www.kloth.net/radio/qcodes.phpThanks for the link! Interesting and very revealing.Roelof

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Hi, I sorted it out and this is the deal.FS with real weather or ONLINE Pressing B will set QNH into altimeter. Airport elevation is shown. when on airport. Turn knob on altimeter to create QFE. (0 hight) Pressing B has the same result as (>K:BAROMETRIC) Pressing B above 18.000 ft will set QNE (1013.2). USA TA Below 18.000 (Europe) use 1013.2 16 * (>K:KOHLSMAN_SET to set QNEIn the aircraft you have to turn the knob to set it to read 1013when ascending and passing TA, or when descending and passing TLFrom what I gather it is not possible to adjust the 18.000 to make just pressing B, give you either, like in the USA situation.Roelof

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>From what I gather it is not possible to adjust the 18.000 to>make just pressing B, give you either, like in the USA>situation.You're completely missing the point... Setting the "default" 29.92 (or 1013.2) may be done an any time, not just when at or above 18,000'...As I've said previously, the mention of 18,000' in the SDK is misleading, and that is where your confusion has begun.Using the key_event (either C or XML, makes no difference) to set 29.92 on the altimeter may be done even if sitting on the ground.

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Does that mean that the Flight Simulator variable SEA LEVEL PRESSURE is always 29.92 (1013.2) or that the 18000 ft value is ignored?

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>You're completely missing the point... Setting the "default">29.92 (or 1013.2) may be done an any time, not just>when at or above 18,000'...I am just wondering who's missing the point Bill,Do the following test:Go to any airport in Europe. Get real weather. Hit "B" QNH will be set in the altimiter. Right.Now hit the "Y" and slew up to 15.000 ft Hit "B" again. Same thing happens. Now Slew up to above 18.000 ft. Hit "B" again and now it does not set local QNH but QNE. SAS of 1013 as required because TA is 18.000ft in the US.Conclusion! Hitting "B" does 2 diffent things depending on being below or above 18.000 ft.My question is/was. Can one change the 18.000 that seems to be fixed in FS9 to serve the US TA, to a more favourable altitude for your own country!!!?Roelof

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>Does that mean that the Flight Simulator variable SEA LEVEL>PRESSURE is always 29.92 (1013.2) or that the 18000 ft value>is ignored?No! See next message.Roelof

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>I am just wondering who's missing the point Bill,>>Do the following test:>>Go to any airport in Europe. Get real weather. Hit "B" >QNH will be set in the altimiter. Right.>Now hit the "Y" and slew up to 15.000 ft Hit "B" again. Same>thing happens. >Now Slew up to above 18.000 ft. Hit "B" again and now it does>not set local QNH but QNE. SAS of 1013 as required because TA>is 18.000ft in the US.>>Conclusion! Hitting "B" does 2 diffent things depending on>being below or above 18.000 ft.I don't use the "B" key to set that key_event... I have it assigned to Shift-B and that's the difference we're seeing.Alt/Options/Controls/Assignment/Assign Shift-B to "Trigger Rotor Brakes"Don't ask why this works, but believe me... it does! Now you can simply press Shift-B anytime to set the Kohlsman to 29.92 (1013)...

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>I don't use the "B" key to set that key_event... I have it>assigned to Shift-B and that's the difference we're seeing.>>Alt/Options/Controls/Assignment/>>Assign Shift-B to "Trigger Rotor Brakes">>Don't ask why this works, but believe me... it does! >Now you can simply press Shift-B anytime to set the Kohlsman>to 29.92 (1013)...Now that is good to know. A nice shortcut to set SAS. Toggle between QNH and QNE. Why did you keep this from us so long Bill? :)The way I have this programmed in my gauge is a little bit more complicated. When crossing a border with the aircraft the program knows what country it has entered. It then sets TA and TL to the appropriate value for that country. Accordingly it sets QNH/QNE as required. Roelof

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>>Assign Shift-B to "Trigger Rotor Brakes">>>>Don't ask why this works, but believe me... it does! >>Now you can simply press Shift-B anytime to set the Kohlsman>>to 29.92 (1013)...I tried it and to my surprise Shift-B to "Trigger Rotor Brakes"seems to be the normal condition in assignments.So far so good I thought but when I tried to use Shift "B"nothing happened. I wonder if you have an aircraft with a gauge in it that redirects it!I tried the Cessna 172 and B737-400 (default)Roelof

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Er, this is embarrasing... I just looked closer and see now that I had used FSUIPC's Hot Key assignments to accomplish the Shift-B trick... Argh! I feel like such a *:-* now...I did this several years ago and had completely forgotten about it.

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Hi Bill,>I did this several years ago and had completely forgotten>about it.I have that sometimes after one week! :-) I am 72+However, The following should do the trick. Not globally but for a specific panel of course. 1013.2 16 * (>K:KOHLSMAN_SET) I have never worked with FSUIPC setting keys etc.There are simply too many utilities, programs and the likes to cover.Roelof

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