SeeYou Mobile Question (units)

Greg Arnold wrote:
Paul Remde wrote:
Hi Dave,

Yes. SeeYou gets airspeed and wind data from the 302. The 302
calculates
the wind - not SeeYou.

So the 302A not only is a logger, but also has a computer that
calculates wind?

No, the 302 flight computer calculates wind. The 302A flight recorder
does not...

Marc

Marc Ramsey wrote:
Greg Arnold wrote:
Paul Remde wrote:
Hi Dave,

Yes. SeeYou gets airspeed and wind data from the 302. The 302
calculates
the wind - not SeeYou.

So the 302A not only is a logger, but also has a computer that
calculates wind?

No, the 302 flight computer calculates wind. The 302A flight recorder
does not...

Marc

The 303 manual says that the 303 calculates the wind. Why would it do
that if the 302 does the same thing?

I don't understand why Cambridge would go to the expense of putting a
wind calculation computer in the 302 when the 302 always will be
connected to another instrument (303 or PDA) that can calculate the
wind. Basically, wind calculation in the 302 would serve no purpose, it
seems.

On Nov 9, 5:46 pm, Greg Arnold wrote:
Marc Ramsey wrote:
Greg Arnold wrote:
Paul Remde wrote:
Hi Dave,

Yes. SeeYou gets airspeed and wind data from the 302. The 302
calculates
the wind - not SeeYou.

So the 302A not only is a logger, but also has a computer that
calculates wind?

No, the 302 flight computer calculates wind. The 302A flight recorder
does not...

Marc

The 303 manual says that the 303 calculates the wind. Why would it do
that if the 302 does the same thing?

I don't understand why Cambridge would go to the expense of putting a
wind calculation computer in the 302 when the 302 always will be
connected to another instrument (303 or PDA) that can calculate the
wind. Basically, wind calculation in the 302 would serve no purpose, it
seems.

The 302 definitely calculates the wind. The 303 is a pretty dumb I2C
serial display, the "computer" is the 302. The *cost* of calculating
the wind in the 302 is likely dominated by the instrumentation
hardware used to measure air temp, pitot pressure and calculate TAS
etc. Since there is already a processor there the additional cost is
just software

Darryl

Greg Arnold wrote:
Marc Ramsey wrote:
Greg Arnold wrote:
Paul Remde wrote:
Hi Dave,

Yes. SeeYou gets airspeed and wind data from the 302. The 302
calculates
the wind - not SeeYou.

So the 302A not only is a logger, but also has a computer that
calculates wind?

No, the 302 flight computer calculates wind. The 302A flight recorder
does not...

Marc

The 303 manual says that the 303 calculates the wind. Why would it do
that if the 302 does the same thing?

I've never actually used a 303, but there are several things it will do
when connected to a 302, that it simply doesn't do when connected to a
302A. Displaying wind may be one of them.

I don't understand why Cambridge would go to the expense of putting a
wind calculation computer in the 302 when the 302 always will be
connected to another instrument (303 or PDA) that can calculate the
wind. Basically, wind calculation in the 302 would serve no purpose, it
seems.

I wrote my own PDA software, and have used it with both a 302 and a
302A. The 302 data stream contains wind speed and direction (which is
pretty close to what I calculate using my own TAS/GS based circling wind
calculation) and headwind component (along with a bunch of other data),
the 302A does not. Make of that what you will...

Marc

Marc Ramsey wrote:


I wrote my own PDA software, and have used it with both a 302 and a
302A. The 302 data stream contains wind speed and direction (which is
pretty close to what I calculate using my own TAS/GS based circling wind
calculation) and headwind component (along with a bunch of other data),
the 302A does not. Make of that what you will...

Interesting -- they must have given the 302 that capacity so it could
output to the 303.

"Greg Arnold" wrote in message
...
Marc Ramsey wrote:


I wrote my own PDA software, and have used it with both a 302 and a 302A.
The 302 data stream contains wind speed and direction (which is pretty
close to what I calculate using my own TAS/GS based circling wind
calculation) and headwind component (along with a bunch of other data),
the 302A does not. Make of that what you will...

Interesting -- they must have given the 302 that capacity so it could
output to the 303.

Greg,

They gave the 302 that capacity so it could talk to the Compaq 15xx PDA
software and the 303.

Back in the mid 1990s, Cambridge to distribute Pocket Nav PDA software. It
was very simular to Glide Navigator (same author.) The "Standard" version
was/is free. The standard verson works well with a generic GPS like the
Garmin 12XL. The "Plus" version, which wasn't free, provided an interface
with both the Model 20 data recorder and L-Nav/S-Nav. The characteristics of
Pocket Nav Standard/Plus can be seen at
http://www.cambridge-aero.com/pocketNAV.htm.

The 302 interface provides enhanced capabilities of both the old flight
recorder and L-Nav/S-Nav.

Locally we have two glider still running the Standard version in combination
with a Garmin 12XL and EW Model D. Two pilots have 302s. One runs the
Cambridge software and the other Glide Navigator II. Two pilots have the new
microRecorder and run Glider Navigator II on their PDAs. I run Glide
Navigator II in combination with a Garmin 12XL and EW Model D.

Wayne