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Old Apr 27, 2008, 02:38 PM
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Schweiz
Joined Apr 2008
48 Posts
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Problems with 5Hz GPS Expander V3 and eLogger V3!

lease excuse my bad English and hope that someone helps me anyway.
I have a 5Hz GPS Expander V3 and eLogger V3 and while I generally like them, there are features that just don't work as they should. The basic volts, amps, functions are awesome, but other issues are listed below.
6.33 software is installed, and all devices were updated with the latest firmware via 6.33 software.

I want in a glider with GPS modules that record data. I have made many attempts in a car. When I set the CR 10PS, I get results from the 10PS 5 without error and 5 Identical GPS positions with errors. This Ok because I think the GPS Expander 5Hz. When I set the CR 2PS, I expect 2 results without error (average of 5 internal measurements).
Practically I just get a good measurement per second is equal to the 2nd of error. (The EventError = 18)

Sample with CR 2PS
10000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.262773333333 8.306786666667 101.1 1.9 0.0 1.4 40579600.0000 3 5 0 0 0 0 0 0
10500 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.262773333333 8.306786666667 101.1 1.9 0.0 1.4 40579600.0000 3 5 0 0 0 0 0 0
11000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.262780000000 8.306785000000 101.0 2.0 0.0 1.0 40580600.0000 3 5 0 0 0 0 0 0
11500 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.262780000000 8.306785000000 101.0 2.0 0.0 1.0 40580600.0000 3 5 0 0 0 0 0 0
12000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.262788333333 8.306781666667 100.9 2.3 0.0 1.2 40581600.0000 3 5 0 0 0 0 0 0
12500 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.262788333333 8.306781666667 100.9 2.3 0.0 1.2 40581600.0000 3 5 0 0 0 0 0 0
13000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.263708333333 8.307470000000 253.7 3.2 0.0 115.8 40582600.0000 4 7 0 0 0 0 0 0
13500 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.263708333333 8.307470000000 253.7 3.2 0.0 115.8 40582600.0000 4 7 0 0 0 0 0 0
14000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.263730000000 8.307451666667 253.7 6.7 0.0 117.4 40583600.0000 4 7 0 0 0 0 0 0
14500 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.263730000000 8.307451666667 253.7 6.7 0.0 117.4 40583600.0000 4 7 0 0 0 0 0 0

Sample with CR 10PS
10000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266895000000 8.307836666667 670.1 3.2 0.0 5.0 62057000.0000 8 7 0 0 0 0 0 0
10100 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266895000000 8.307836666667 670.1 3.2 0.0 5.0 62057000.0000 8 7 0 0 0 0 0 0
10200 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266893333333 8.307841666667 669.7 3.1 0.0 5.3 62057200.0000 8 7 0 0 0 0 0 0
10300 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266893333333 8.307841666667 669.7 3.1 0.0 5.3 62057200.0000 8 7 0 0 0 0 0 0
10400 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266891666667 8.307845000000 669.4 2.8 0.0 5.6 62057400.0000 8 7 0 0 0 0 0 0
10500 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266891666667 8.307845000000 669.4 2.8 0.0 5.6 62057400.0000 8 7 0 0 0 0 0 0
10600 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266891666667 8.307848333333 669.2 3.3 0.0 5.7 62057600.0000 7 7 0 0 0 0 0 0
10700 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266891666667 8.307848333333 669.2 3.3 0.0 5.7 62057600.0000 7 7 0 0 0 0 0 0
10800 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266891666667 8.307851666667 668.7 3.8 0.0 5.8 62057800.0000 8 7 0 0 0 0 0 0
10900 0 0 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266891666667 8.307851666667 668.7 3.8 0.0 5.8 62057800.0000 8 7 0 0 0 0 0 0

It follows that problem a very short loggertime. If I 2 good measurements per sec do I want to have the CR 4PS.
Does that for you without this error?
Best Regards,
Geni
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Last edited by Geni; Apr 27, 2008 at 11:55 PM.
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Old Apr 28, 2008, 08:03 PM
billpa's Avatar
Joined Nov 2003
4,935 Posts
HI Geni,

Sorry about your issue. I think I understand what you are asking. With version 6.43, there are improvments in how often GPS samples are logged with sample rates lower than 8 samples per second. Could you please try this version:

http://www.eagletreesystems.com/Late...beta/setup.exe

Regards,

Bill, for Eagle Tree
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Old Apr 29, 2008, 11:05 AM
Registered User
Schweiz
Joined Apr 2008
48 Posts
Hi Bill,
Thank you for the quick response. Now i use the version 6.43.
1st Here is the result of my tests, now have all the errorcode 18 although NumSats> = 9 and GPSFlags = 7. I think it is a step in the right direction.
2nd The Logtime of 202 seconds was 405 Records, and will need 10% from memory. If this is not a low level of efficiency?

20000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266868333333 8.307921666667 660.3 2.6 0.0 17.9 55631800.0000 10 7 0 0 0 0 0 0
20500 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266866666667 8.307923333333 660.2 4.0 0.0 18.0 55632200.0000 9 7 0 0 0 0 0 0
21000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266863333333 8.307930000000 660.2 3.0 0.0 18.5 55632800.0000 9 7 0 0 0 0 0 0
21500 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266861666667 8.307933333333 660.2 4.0 0.0 18.7 55633200.0000 9 7 0 0 0 0 0 0
22000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266855000000 8.307938333333 660.0 3.5 0.0 19.1 55633800.0000 10 7 0 0 0 0 0 0
22500 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266853333333 8.307940000000 659.9 3.5 0.0 19.2 55634200.0000 10 7 0 0 0 0 0 0
23000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266848333333 8.307945000000 659.7 4.5 0.0 19.6 55634800.0000 10 7 0 0 0 0 0 0
23500 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266845000000 8.307945000000 659.5 4.5 0.0 19.7 55635200.0000 9 7 0 0 0 0 0 0
24000 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266838333333 8.307943333333 659.6 5.6 0.0 19.6 55635800.0000 9 7 0 0 0 0 0 0
24500 1 18 0 0 0 0 0 0 0 -2731 -2731 -2731 0 0 47.266835000000 8.307938333333 659.6 5.4 0.0 19.3 55636200.0000 9 7 0 0 0 0 0 0

Regards,
Geni
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Old Apr 29, 2008, 11:47 AM
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Joined Nov 2003
4,935 Posts
Hi Geni,

Glad the main issue has been resolved for you.

Regarding log time, we are going to enable our lossless compression on the GPS data, which will greatly increase logging time. We will do this as soon as possible.

Regards,

Bill, for Eagle Tree
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Old Apr 29, 2008, 12:17 PM
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Schweiz
Joined Apr 2008
48 Posts
Hi Bill,
you are very fast.

Manual page9
Quote:
18 = ERROR_GPS_DATA_PACKET: GPS Data was received from the GPS Expander
How do I interpret the error 18? So i'm not sure!

Quote:
Originally Posted by billpa
Regarding log time, we are going to enable our lossless compression on the GPS data, which will greatly increase logging time. We will do this as soon as possible.
Thats a very good message.

Regards,
Geni
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Old Apr 29, 2008, 12:29 PM
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Hi Geni,

The error 18 just means that GPS data has been received for that sample. It is a good thing. :-)

Regards,

Bill, for Eagle Tree
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Old Apr 30, 2008, 01:06 PM
Registered User
Schweiz
Joined Apr 2008
48 Posts
My measurement of today with 1 per sec. Total 3 sessions.
Distance between start and end of 40km and all records have the same value. This can not agree. I understand the world no longer. Is 1 per second measurement is not possible?

Regards,
Geni
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Old Aug 14, 2008, 12:08 AM
Registered User
Schweiz
Joined Apr 2008
48 Posts
Hi Bill,
Quote:
Originally Posted by billpa
Regarding log time, we are going to enable our lossless compression on the GPS data, which will greatly increase logging time. We will do this as soon as possible.
How is the status?
1. The log time with GPS is still very short.
2. When will the Optimal capturerate 5/s supported?

Regards,
Geni
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Last edited by Geni; Aug 14, 2008 at 12:17 AM.
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