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Discussion in 'GPS 101 - Which GPS For Me' started by Emmbeedee, Sep 7, 2010.
Hard to justify!!!
Conducting water or dampness is a problem for the source but not the load.
Well maybe the result of the trouble for the source was high voltage for the load device?
Yeah - I'm thinking water got into the transformer that steps it down from 12v to 5v and over-voltaged the unit(s).
DC Transformer a new science break through!
Was this application using USB power input derived from a 12V battery? If so and you got very dirty (salty, etc.) water between the 12V input and 5V output it is possible but those connections should not be close.
Whatever - you're the rocket scientist, not me
Voltage regulator - is that better?
Well yeah, it was the Garmin cable made just for that application.
So is it likely to damage my gps if I use the mini-usb lead for my blackberry?
No, it's very unlikely to damage it. But you'll need to make sure your Oregon is in "Spanner Mode" or it might just go into mass storage mode when you plug in a non-Garmin cable.
Unless water got into the series regulator in that little black box in the cable, water had nothing to do with your problem.
So what's your guess, then? It seems highly suspicious that the bike was shut off out in the rain, the gps worked one minute, then it stopped.
I had an old grey beard from NASA tell me years ago he didn't believe in coincidence when I proposed two events were not connected.
It was raining and GPS went TU, there probably is a connection. Obvious question is; where could water have gone where it didn't belong?
Could it have shorted the 5V in to a data line out in the USB plug? I would think that would have only taken out USB driver, not whole unit.
Could it have gotten in the series regulator in the cable? 12V into a 5V input makes toast quick.
I think the top scenario is most likely, but when the same cable blew my 780 the next day, I cut off its head.
I got myself a 62s for a trip heading down to South america lasting half a year or so and I´m not sure if I shall keep it or send it back...
The device itself is quite nice and the free maps of OSM work fine, but I´m concerned if the connector mechanically will survive this trip...
(My 62s will be placed in my map compartment of the tank bag and will be connected - when onroad - with a Mini USB. Though when going off-road (or when hiking or sightseeing) I´ll detach it and run it on batteries. This at least the theory... )
I just wonder - is there some hands-on experience with the mechanical stability of the USB connector of the 62s? (Actually I didn´t find any real hands-on reviews. Mainly some concerns are listed but I didn´t see anybody actually having some mechanical issue with the USB...)
Please note - i don´t speak about electrical issues!
My usb connectors wore out on two Oregon 550s so I had to send the units back for warranty exchange. The mini USB method is not durable, but get some good rechargeable batteries and you're all set.
Why compromise go with the 78?
Well... My thought is that not having it directly connected to the motorbike is not a too big issue.
But I like the good reception of the 62s. For me a robust and reliable device when hiking is more important than when being on the road having it connected to power...
At least this is my current idea...
How is the robustness of the 78 versus 62? Is it essentially the same? Somehow for me the 62 appears better usable for really rough conditions.
Any comments on this?
If I had to do the GPS purchase all over again, I'd have gone with the 76. Now with the 62/78's out, the choice between the two for me is clear - go with the 78. RAM-mount that wraps around the entire unit, holding it securely... robust external power/serial connector... The difference in antennas isn't going to be noticeable with the receiver mounted on the bars.
The QFH on the 60/62's works best when it's pointed straight up, like it would be clipped to a belt or shoulder strap on a pack. The patch antenna works best parallel to the ground... like when you're holding it in your hand and looking at it, or mounted to the bars of a motorcycle/snowmobile.
If anything I'd say the 78 would be a little more robust due to the exposed antenna on the 62 . Of course the downside to the 78's is they use the inferior patch antenna which could mean degraded accuracy in wooded and hilly area's. For hiking I think it's a no brainer that the 62 is a better choice because your life can really depend on the accuracy. After all, the 78 is a marine unit while the 62 is a hiking unit. On a bike maybe not so critical, really depends on the area's you're riding.
I don't mount any of my GPS's horizontal on bikes. No way I could see the things mounted flat.