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Pocket GPS World - SatNavs | GPS | Speed Cameras FAQ (Frequently Asked Questions)



Category: Main -> General GPS Questions

Question
·  Can I run a Bluetooth CF card or another GPS Receiver in the CF slot of a Navman GPS sleeve ?
·  How do I defrag an MMC/SD card or Compact Flash card ?
·  I can't get a fix most of the time, is my unit defective ?
·  I can't get a GPS Signal, what's wrong ?
·  If I buy Hardware (A), can I then purchase and install Software (B) ?
·  What should be the average Sat Fix ?
·  When I connect my GPS I either get COM1 doesn't exist, or ActiveSync pops up and tries to connect to my PC which isn't connected
·  Why are the units so expensive ?

Answer
·  Can I run a Bluetooth CF card or another GPS Receiver in the CF slot of a Navman GPS sleeve ?

No, it's not currently possible. Although the socket is CF and it supports Type I and Type II we have tested it with several CF GPS Receivers and although they work on different ports, all you get back is garbage from a data perspective, so using the CF slot for anything else other than storage would not be a good idea.

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·  How do I defrag an MMC/SD card or Compact Flash card ?

This can be defragmented using Storage Tools Pocket PC.

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·  I can't get a fix most of the time, is my unit defective ?

Perhaps, but perform several simple tests. 1) Make sure you eject the sleeve or card, power the Pocket PC off, insert the sleeve or card and power on the Pocket PC. Now perform a soft reset. Wait for approx 30 secs for your Pocket PC to stop loading all it's startup programs and let it settle down. Now load the GPS Software, Power on the GPS device (if there's a software power button), and now wait. You should find this is a better way of cutting down the TTFF time. 2) Make sure you are outside, and not hindered by the car roof or windows, and that you are not near a tall building or tree. Once you've obtained your First Fix, take your GPS unit into the car and you should have a better fix in starting your journey. If you lose the fix since you've entered your vehicle, it could be that you have a coated windscreen, or there is electrical interference, and may require an external GPS antenna.

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·  I can't get a GPS Signal, what's wrong ?

Take a look at this Forum Thread. It could be that the car you are using has a heat reflective windscreen or a heater coil in the windscreen which is dampening or blocking GPS Signals.

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·  If I buy Hardware (A), can I then purchase and install Software (B) ?

You need to check with the hardware manufacturer of your GPS Sleeve or CF/PC Card. Most will allow you to use any NMEA device by assigning it a COM port. You may also wish to check with the software company just in case. We can tell you that most software does work with the NAVMAN 1000 PC Card and 3000 Sleeve providing you have the NAVMAN March 2002 updated GPS driver installed.

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·  What should be the average Sat Fix ?

There isn't an average number of sats you should be looking out to be fixed upon. Sats and their strengths change depending on the area you are in, whether signals are being rebounded off of tall buildings or being dampened by other objects like dense trees or canyons. However, for a 3D fix which can not only position you horizontally on the earth, but also vertically with altitude you should be looking at 4+. Although there are no averages, most people should expect to see around 6+ sats.

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·  When I connect my GPS I either get COM1 doesn't exist, or ActiveSync pops up and tries to connect to my PC which isn't connected

This happens a lot if you have an external plug-in keyboard What happens is most in-car GPS Receivers use the bottom sync port of the Pocket PC (designated as COM1). When you install something like the Targus Stowaway Keyboard, you install a driver, and in here there's an auto-connect option called Enable Keyboard, and one called Hot-Dock. If you have these enabled, then it will periodically check to see if there's a cable connected to the bottom sync port and if it senses one is, it will then connect to the keyboard. Although this doesn't cause most applications a problem, when you plug in a GPS Receiver, it thinks it's a keyboard, so it tries to connect and also fire up an ActiveSync connection. Unchecking these options in the Stowaway Driver Program whilst you want to use a GPS will rectify this. Ticking these after you've disconnected the GPS will allow you to re-use the keyboard.

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·  Why are the units so expensive ?

The GPS units are in comparison about the same price as most of the better hand held GPS units, but you also have to factor in the cost of the Pocket PC (if you don't already have one), which then does make it more expensive. You will find that generally the Pocket PC GPS devices are better because they are kitted out with more memory and disk space and they are colour units.

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