Newbie S-NAV question

[dbrunone]

So I bought a glider with an S-NAV&GPS-NAV not long ago, and I don't really know how to use either. However, when I start up the S-NAV, the unit thinks I am at 28300ft, when actual elevation is 434ft. Obviously, it won't let me adjust the altimeter enough to get the right elevation. On the startup "altimeter" screen, I set the pressure setting to the same as my regular altimeter (29.92 or whatever), but the altitude readout is still way off. Anyone run into this? Is it broken, or am I missing a setting somewhere?

[Jordan Pollock]

On Apr 7, 6:09*pm, dbrunone >
wrote:
> So I bought a glider with an S-NAV&GPS-NAV not long ago, and I don't
> really know how to use either. However, when I start up the S-NAV, the
> unit thinks I am at 28300ft, when actual elevation is 434ft. Obviously,
> it won't let me adjust the altimeter enough to get the right elevation.
> On the startup "altimeter" screen, I set the pressure setting to the
> same as my regular altimeter (29.92 or whatever), but the altitude
> readout is still way off. Anyone run into this? Is it broken, or am I
> missing a setting somewhere?
>
> --
> dbrunone

I just dial the Snav altimiter down to the field elevation. Assuming
your Snav is receiving data from a GPS source, that will ensure your
glide slope/ alt differential is accurate. I suppose your altimeter
and or Snav could need calibrated, unlike every powered aircraft, very
few sailplanes ever get a pitot/static inspection. I could be wrong
though, I'm pretty new to the same system.

Jordan
ASW20 "E"

[Craig Lowrie]

It may be looking for millibar setting (not inches).... or just asjust it
until the feet setting is zero and ignore the pressure setting itself...
Could be wrong, but just an idea..

At 04:31 08 April 2012, Jordan Pollock wrote:
>On Apr 7, 6:09=A0pm, dbrunone
>wrote:
>> So I bought a glider with an S-NAV&GPS-NAV not long ago, and I don't
>> really know how to use either. However, when I start up the S-NAV, the
>> unit thinks I am at 28300ft, when actual elevation is 434ft. Obviously,
>> it won't let me adjust the altimeter enough to get the right elevation.
>> On the startup "altimeter" screen, I set the pressure setting to the
>> same as my regular altimeter (29.92 or whatever), but the altitude
>> readout is still way off. Anyone run into this? Is it broken, or am I
>> missing a setting somewhere?
>>
>> --
>> dbrunone
>
>I just dial the Snav altimiter down to the field elevation. Assuming
>your Snav is receiving data from a GPS source, that will ensure your
>glide slope/ alt differential is accurate. I suppose your altimeter
>and or Snav could need calibrated, unlike every powered aircraft, very
>few sailplanes ever get a pitot/static inspection. I could be wrong
>though, I'm pretty new to the same system.
>
>Jordan
>ASW20 "E"
>

[Jordan Pollock]

On Apr 7, 11:31*pm, Jordan Pollock > wrote:
> On Apr 7, 6:09*pm, dbrunone >
> wrote:
>
> > So I bought a glider with an S-NAV&GPS-NAV not long ago, and I don't
> > really know how to use either. However, when I start up the S-NAV, the
> > unit thinks I am at 28300ft, when actual elevation is 434ft. Obviously,
> > it won't let me adjust the altimeter enough to get the right elevation.
> > On the startup "altimeter" screen, I set the pressure setting to the
> > same as my regular altimeter (29.92 or whatever), but the altitude
> > readout is still way off. Anyone run into this? Is it broken, or am I
> > missing a setting somewhere?
>
> > --
> > dbrunone
>
> I just dial the Snav altimiter down to the field elevation. *Assuming
> your Snav is receiving data from a GPS source, that will ensure your
> glide slope/ alt differential is accurate. *I suppose your altimeter
> and or Snav could need calibrated, unlike every powered aircraft, very
> few sailplanes ever get a pitot/static inspection. *I could be wrong
> though, I'm pretty new to the same system.
>
> Jordan
> ASW20 "E"

I misread part of your post. Might check with Gary at ClearNav
instruments, might need a calibration on the S-Nav, or he could
provide some goo insight otherwise. He's helped me out numerous times
in working out the bugs.

Jordan

[Craig R.]

Is it possible you have a task inputted and the 28,300 is the altitude you need to gain to complete the task?
Craig

[Paul Remde]

Hi,

My guess is that the S-NAV needs repair. Gary Kammerer at ClearNav can
probably fix it for you. You can reach him through their web site at
www.clearnav.net.

You can download the S-NAV and GPS-NAV manuals at www.cambridge-aero.com.

You should also check out the free training/demo tools for L-NAV and GPS-NAV
on my web site. The L-NAV demo covers most of the functionality of the
S-NAV - but not the tasks - which would be done in the GPS-NAV.
http://www.cumulus-soaring.com/cai_downloads.htm

Best Regards,

Paul Remde
Cumulus Soaring, Inc.
__________________________________________________ __

"dbrunone" > wrote in message
...

So I bought a glider with an S-NAV&GPS-NAV not long ago, and I don't
really know how to use either. However, when I start up the S-NAV, the
unit thinks I am at 28300ft, when actual elevation is 434ft. Obviously,
it won't let me adjust the altimeter enough to get the right elevation.
On the startup "altimeter" screen, I set the pressure setting to the
same as my regular altimeter (29.92 or whatever), but the altitude
readout is still way off. Anyone run into this? Is it broken, or am I
missing a setting somewhere?




--
dbrunone

[RS]

On Apr 8, 11:46*am, "Paul Remde" > wrote:
> Hi,
>
> My guess is that the S-NAV needs repair. *Gary Kammerer at ClearNav can
> probably fix it for you. *You can reach him through their web site atwww.clearnav.net.
>
> You can download the S-NAV and GPS-NAV manuals atwww.cambridge-aero.com.
>
> You should also check out the free training/demo tools for L-NAV and GPS-NAV
> on my web site. *The L-NAV demo covers most of the functionality of the
> S-NAV - but not the tasks - which would be done in the GPS-NAV.http://www..cumulus-soaring.com/cai_downloads.htm
>
> Best Regards,
>
> Paul Remde
> Cumulus Soaring, Inc.
> __________________________________________________ __
>
> "dbrunone" > wrote in message
>
> ...
>
> So I bought a glider with an S-NAV&GPS-NAV not long ago, and I don't
> really know how to use either. However, when I start up the S-NAV, the
> unit thinks I am at 28300ft, when actual elevation is 434ft. Obviously,
> it won't let me adjust the altimeter enough to get the right elevation.
> On the startup "altimeter" screen, I set the pressure setting to the
> same as my regular altimeter (29.92 or whatever), but the altitude
> readout is still way off. Anyone run into this? Is it broken, or am I
> missing a setting somewhere?
>
> --
> dbrunone

Another option, leave it as is and brag to your friends on a day with
only 6000ft cloud bases and no wind you managed to climb 28,300ft.
Check out Craig's R'.s theory. I'm not familiar with the the SNAV
myself, but the possibility that 28,300ft is the altitude needed to
glide to a preselected task seems plausable. Where is your glider
from; if the previous owner still had it set to a location in that
region, is 28,300ft needed to reach that location from where it
currently is???

[M North]

Try pressing GO+LEFT while turning it on.

[Steve Leonard[_2_]]

On Apr 7, 6:09*pm, dbrunone >
wrote:
> So I bought a glider with an S-NAV&GPS-NAV not long ago, and I don't
> really know how to use either. However, when I start up the S-NAV, the
> unit thinks I am at 28300ft, when actual elevation is 434ft. Obviously,
> it won't let me adjust the altimeter enough to get the right elevation.
> On the startup "altimeter" screen, I set the pressure setting to the
> same as my regular altimeter (29.92 or whatever), but the altitude
> readout is still way off. Anyone run into this? Is it broken, or am I
> missing a setting somewhere?
>
> --
> dbrunone


If this is the altitude shown on the initial power up when you see
battery voltage, barometric pressure, and altitude, then it needs to
go visit Gary at ClearNav. Oh, and you may need to put on your oxygen
mask, if you really are that high! ;-)

Steve

[dbrunone]

On Apr 8, 11:46*am, "Paul Remde" wrote:
Hi,

My guess is that the S-NAV needs repair. *Gary Kammerer at ClearNav can
probably fix it for you. *You can reach him through their web site atwww.clearnav.net.

You can download the S-NAV and GPS-NAV manuals atwww.cambridge-aero.com.

You should also check out the free training/demo tools for L-NAV and GPS-NAV
on my web site. *The L-NAV demo covers most of the functionality of the
S-NAV - but not the tasks - which would be done in the GPS-NAV.http://www..cumulus-soaring.com/cai_downloads.htm

Best Regards,

Paul Remde
Cumulus Soaring, Inc.
__________________________________________________ __

"dbrunone" wrote in message

...

So I bought a glider with an S-NAV&GPS-NAV not long ago, and I don't
really know how to use either. However, when I start up the S-NAV, the
unit thinks I am at 28300ft, when actual elevation is 434ft. Obviously,
it won't let me adjust the altimeter enough to get the right elevation.
On the startup "altimeter" screen, I set the pressure setting to the
same as my regular altimeter (29.92 or whatever), but the altitude
readout is still way off. Anyone run into this? Is it broken, or am I
missing a setting somewhere?

--
dbrunone

Another option, leave it as is and brag to your friends on a day with
only 6000ft cloud bases and no wind you managed to climb 28,300ft.
Check out Craig's R'.s theory. I'm not familiar with the the SNAV
myself, but the possibility that 28,300ft is the altitude needed to
glide to a preselected task seems plausable. Where is your glider
from; if the previous owner still had it set to a location in that
region, is 28,300ft needed to reach that location from where it
currently is???

Good thought, but the 28300 comes up on the "set altimeter" screen when you first turn it on. Plus, I programmed the local airport into the GPS-NAV already. It would take more than 28,300ft for final glide form NY to Tennessee anyway ;-).

[dbrunone]

Try pressing GO+LEFT while turning it on.

What will that do

[Steve Leonard[_2_]]

On Apr 9, 5:11*pm, dbrunone >
wrote:
>
> Good thought, but the 28300 comes up on the "set altimeter" screen when
> you first turn it on. Plus, I programmed the local airport into the
> GPS-NAV already. It would take more than 28,300ft for final glide form
> NY to Tennessee anyway ;-).
>
> --
> dbrunone

Yep, it needs to go visit Gary. Just for grins, you might try
removing the cover, and then carefully slip the boards apart and back
together on their connections. Sometimes, they get a little corrosion
on them and with the really low currents and voltages, this can cause
problems. A little "mechaincal abrasion" sometimes can do the trick.

Steve

[Andrew Henderson]

Had this happen to my SNav about 2-3 years ago and when I was ready to go
X/c so I was screwed.

Another pilot who had previously had the same problem leaned in to the back
of the panel, put his hand in near the back of the Snav and give it a thump
with the side of his hand. All went back to normal and never had the
problem since.

Hope this helps.

Andy

[dbrunone]

I tried this, and it actually worked! Thanks! Hopefully it won't happen again

Had this happen to my SNav about 2-3 years ago and when I was ready to go
X/c so I was screwed.

Another pilot who had previously had the same problem leaned in to the back
of the panel, put his hand in near the back of the Snav and give it a thump
with the side of his hand. All went back to normal and never had the
problem since.

Hope this helps.

Andy

[Andrew Henderson]

You’re welcome. Pleased it worked for you. :-)

Nothing like a good old thump to get things going!!

You might want to think about buying a new internal battery too as they
only last about 5 years. You do get plenty of warning when it's getting low
though so no panic.

Regards

Andy

At 00:26 14 April 2012, dbrunone wrote:
>
>I tried this, and it actually worked! Thanks! Hopefully it won't happen
>again
>
>Andrew Henderson;813016 Wrote:
>> Had this happen to my SNav about 2-3 years ago and when I was ready to
>> go
>> X/c so I was screwed.
>>
>> Another pilot who had previously had the same problem leaned in to the
>> back
>> of the panel, put his hand in near the back of the Snav and give it a
>> thump
>> with the side of his hand. All went back to normal and never had the
>> problem since.
>>
>> Hope this helps.
>>
>> Andy
>
>
>
>
>--
>dbrunone
>