Hi Jeff,

Try and reset the unit and than reinstall the software..

Angelo

-------------------------------------------------- From: "Jeff Thomas" sitedev@sitedeveloper.net Sent: Friday, March 06, 2009 4:59 PM To: amsat-bb@amsat.org Subject: [amsat-bb] LVB Tracker

I have been receiving errors:

"Warning Bad EEPROM Data" when I apply power to the LVB Tracker rotor controller.

I have received this error 4 or 5 times now and it forces me to re-calibrate the rotor controller.

Anyone have any idea while this happens over and over?

Thanks,

Jeff - K7WIN

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The LVB Tracker is a great little box... I have 2 for 2 separate ground stations. Both run on the USB.

I can force the lost of memory on one of the LVB's if I switch the G5400B rotator controller off and on too fast. If I leave the G5400b off for about 10-15 seconds before turning it back on, the LVB will usually not loose its mind. I have 2 different G5400b control boxes and the LVB reacts the same on both. Eprom 0.9 but also had this problem with 0.7

The second LVB is on a G5500 control box and does not display this problem. Eprom 0.7

I have not switched the 2 LVB boxes to see if the problem is related to the G5400 and not the G5500.

So I am now very careful when turning it OFF and ON. The OFF/ON routine is sometimes required when the USB/Virtual Com Port goes brain dead on my laptop and the VCOM port is lost. Power OFF/ON causes XP to refind the virtual comport. The alternative is to unplug and replug the USB cable to the LVB. Either way the new virtual hardware ( comport ) is found and my SatPC32 runs normally.

I also tend to avoid the eprom problem by leaving the G5400b on all the time.

The other issue I have with one of the LVB boxes is the poor ground/shielding of the control cable. The elevation meter on the G5400b would not go to 0 degrees when the antenna was horizontal. This is after a calibration 0 to 90. Howard Long was super fast to come back by email with a solution to this problem saying it was an indication of poor shielding or grounding on the cable. I replaced the cable with one with more braid and foil and it improved somewhat. When I run a jumper wire from the chassis of the G5400b to the ground trace on the LVB PCB I then get the needle down to 0 degrees. The LVB on the G5500 is OKAY out of the box and that is why I haven't flashed the eprom from 0.7 to 0.9

73, Alan VE4YZ EN19kw AMSAT LM 2352

-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Jeff Thomas Sent: March 6, 2009 5:00 PM To: amsat-bb@amsat.org Subject: [amsat-bb] LVB Tracker

I have been receiving errors:

"Warning Bad EEPROM Data" when I apply power to the LVB Tracker rotor controller.

I have received this error 4 or 5 times now and it forces me to re-calibrate the rotor controller.

Anyone have any idea while this happens over and over?

Thanks,

Jeff - K7WIN

---

Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb