EverMore BT GPS receiver response seems laggy

mrralphman · Occasional Visitor Joined: Dec 27, 2005 Posts: 34

Hi all,

I have a EverMore BT-R920 receiver and it's paired with my Dell Axim X50v.

I'm sure it used to be quite accurate in the update department, 1 to 2 secs delay, but recently it seems to be more in the 4 seconds area.
Strange thing is that if I stop and start off again after maybe 2 to 3 seconds, the GPS display never actually drops to zero.

I've tried to alter the baud rate up to 56K, and it works but the uptime time doesn't get any better.

I'm using this with a couple of apps, which both show the same delay in updates.

1) - TT6
2) - Home written GPS Speedo.

Is there anything else I can look at to try to get the delay back to normal?

Many Thanks,

Paul Ryder

lbendlin · Posted: Sun Aug 05, 2007 3:45 am Post subject:

What chipset is that? Their own (which was bad) or SiRF III?

Changing the baud rate has absolutely no impact. Try a factory reset.
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mrralphman · Occasional Visitor Joined: Dec 27, 2005 Posts: 34

Thanks for the reply...

Here is the specs of the receiver.

BT-R920
SiRF starIII Chipset 20 Channels all in view tracking
High Sensitivity -159dBm
Reacquisition Time: 0.1 second
Support Standard NMEA-0183 Protocol
Auto Adjustment Baud Rate 4800-115200 bps
DGPS : WAAS/EGNOS
After device disconnects 30 minutes, the GPS receiver Shall automatic turn off the power
Compatible with Wireless devices with Serial Port Profile(SPP)
Alkaline 3 X AAA Battery lasts for more than 6 hours of use

lbendlin · Posted: Mon Aug 06, 2007 9:57 pm Post subject:

Play around with SiRFDemo and switch static navigation off, see if that helps. Don't forget to set the receiver back to NMEA.
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mrralphman · Occasional Visitor Joined: Dec 27, 2005 Posts: 34

Hi,

Thanks for the repy..

Now maybe I've done something really dumb, but I think I've

my GPS unit.

I've installed SIRFDemo and got it connected via BT on my PDA.
I tried connecting via BT on the PC, but I cannot unless I use XTNDConnect and that does not allow the GPS unit to be assigned a COM Port.

Still connected ok from SIRFDemo on the PDA and switched to SIRF Mode, that's when I lost connection.. SD will not reconnect.
I think the data is coming through as my own app seems to be receiving data, just no valid GPS signal.

Tried connecting via USB, but the unit is not detected.. Maybe I've the wrong USB cable.

Bit of a loss as to what to do now..

Any suggestions?

Paul.

lbendlin · Posted: Tue Aug 07, 2007 5:14 pm Post subject:

remove the battery ovenight, or for longer if necessary. It should then fall back to NMEA mode.
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Lutz

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