Andrew, you're not the only one with this problem.
www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=99392David
I also noted on another forum of the same site a few comments that may interest you Re the i747
"A few problems :
1. Switching to LOG starts the logging, but switching back to NAV does not stop it. Even if you turn off the 747, the logging resumes when you start it again. It has to be stopped by the PC software.
2. Can't activate the "ELEVATION" info field in the logging options. UPDATE : works if you activate the "HEIGHT" field instead
3. The PTL button only works if the 747 is "awake", i.e. connected to a PDA/PC over Bluetooth or logging, it won't wake up if you push the PTL mode. This limitation doesn't make it very useful
4. I was not able to download my 7000 points today, it kept timing out at about 60%. I wonder whether this has abything to do with the logging resuming automatically when you start downloading.FIXED - make sure the switch is in the "LOG" position and that you have the latest USB drivers.
Fortunately I haven't seen the log data being erased by moving the switch as others have, but overall I'd say that both the 747 and 757's logging modules are going to need more work before they're ready for prime time. They don't feel quite finished at this time. I was pretty annoyed today when I realized I wouldn't be able to geocode my pictures due to this timing-out problem. Never had such a problem with the Globalsat DG-100 which does strengthen my belief in single-purpose devices that do one thing well.
More test results :
- Logging without Bluetooth : 30h24'
- Log points with elevation : 61,076
- Downloading 61,076 points : 26 minutes !
Comments by 4river :
1. To "HEIGH" of a CSV file it seems that "Altitude + Geoid" is outputted.
In "HEIGH" should output "Altitude (mean-sea-level)".
2. "Overwrite Mode" of a Log is not "Circular recording".
3. Log capacity (just about).
1) Default items: 69,886 Points.
2) Default + Alt: 61,664 Points.
3) All except SID,ELEVATION,AZIMATH,SNR: 33,816 Points.
4) All items records: 12,479 points (it changes with the number of visible satellites).
4. Battery operating time (actual measurement value).
Condition: Log in every 5 seconds, and Bluetooth connection, stationary.
NMEA 1Hz : 27.7H
NMEA 5Hz : 17.2H
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Original post by jrj : I just got one of these. This is not a review, just a few impressions.
The unit seems to perform well. No problem connecting to Streets & Trips or Google Earth. Pretty good sensitivity - yesterday it captured all the data on a flight from SFO to Seattle from inside my travel bag.
The iBlue software is very very rudimentary. Basically you can capture a CSV file or create a kml file for Google Earth. That's about it. The CSV file seems to be slightly non-standard but luckily Adam Schneider of GPS Visualizer is extremely responsive and updated his site to accept that data. As far as I can tell, that site is easily the best place to try to do anything with the iBlue data."
See the rest at
www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=81315