BU-353 Problem

**john05srt4** · 07-12-2007, 10:37 AM

Yes but the PC will not even detect the device is plugged into a USB port so you cant change the settings.

**tracker64** · 07-12-2007, 10:55 AM

it'll detect as a com port, not as a GPS device.
can you verify this?

**john05srt4** · 07-12-2007, 01:11 PM

No mine would not even show as ANY type of device..

**brodgar** · 07-12-2007, 05:18 PM

Originally Posted by tracker64

if you don't set the BU-353 at 9600 baud you WILL NOT get any output and it will not work at all until you set it at 9600 baud, in port properties and in GPS application software...

Am I doing something wrong? I have mine set to 4800, ( I can't find the instructions now but I'm certain that is what it said to do ). At present mine is working perfectly

**GiODi** · 07-12-2007, 05:46 PM

It should be 4800.

So does the Prolific USB-Serial show up under Ports (COMS & LPT) in the device manager?

**tracker64** · 07-12-2007, 07:59 PM

oops sorry, you are right at 4800, it was late that night i was half out lol

**kelmk** · 12-31-2007, 02:59 PM

This thing is driving me crazy. I'm ready to toss it out the window.
Everytime I reboot the bu-353 stops working. The port COM3 is there and it's set to 4800 but gpsinfo or xport won't detect it.
The only way I can get it to work sometimes is to uninstall it and rescan for hardware and sometimes it will work and usually not. unplugging and plugging does the same thing. Once it is working it will usually survive a suspend/restore but once I reboot it's busted again.
I have tried different usb ports and com ports but I get the same behavior no matter what. This is my second bu-353 btw and the first had the same problem.
Are there any drivers newer than 2004 for this thing?
I'm using XP Pro

**DarquePervert** · 12-31-2007, 03:16 PM

Try disabling power saving for the Prolific device in the device manager, as well as all your USB root hubs.

**kelmk** · 12-31-2007, 05:41 PM

That didn't help. If I check the power status of the bu-335 in device manager it says D0.

**linkyone** · 12-31-2007, 06:05 PM

Im not too familiar with this device but my older one has a red LED on it. Does this one? if so does it light up? Everyone else has trouble shot everything that i can think of besides power. How do you all have it connected? USB hub, right off the computer? laptop or desktop? how long is the usb cord from the plug to the device? since we are working with DC power, the longer the wire the least ammount of available voltage thus the device is not to be found.