1759Re: [tracker2] T2-135 lessons being learned
- May 24, 2007Ok I confirmed that the T2-135 will transmit if you tell it a
specific location and to transmit with out a good gps lock. but it
never seems to get a GPS lock. I have used the Deluo GPS direct to
the laptop using the USB adapter and it seems o get lock just fine.
It is acting like the T2-135 is never seeing any GPS data. Is there
documentation for where the test points are to test for continuity
from the front GPS port to the T2-135?
On May 16, 2007, at 10:25 AM, Scott Miller wrote:
> The noise is apparently a design flaw in the DR-135 - it gets
> crosstalk from the data input to the speaker, regardless of the
> volume setting. You can stop it by installing a 3.5mm plug in the
> speaker jack to disable the internal speaker entirely.
> From: firstname.lastname@example.org [mailto:email@example.com] On
> Behalf Of Bruce W. Martin
> Sent: Wednesday, May 16, 2007 7:43 AM
> To: firstname.lastname@example.org
> Subject: Re: [tracker2] T2-135 lessons being learned
> I finally got around and put the radio back in the truck to test it
> It powers up and I know the GPS is working and getting lock but the
> tracker never transmits. It seems to be receiving.
> Also, I notice that when the GPS is connected to the front GPS port
> that there is a rhythmic noise coming from the speaker. If I disable
> data or unplug the GPS it goes away. A different GPS plugged into the
> DB9 on the back does not produce the noise.
> I am heading for Dayton tomorrow morning and will bring it along.
> On May 2, 2007, at 6:04 PM, Bruce W. Martin wrote:
> > When I start it up I get both the red and green LEDs alternately
> > flashing. If I start the config program and restart the radio/T2
> > the Green LED is constant on and the program says:
> > "Unsupported firmware version. Please upgrade configuration program.
> > (ver 255 build 65535 target AP64-H)"
> > I ran the downloaded the OT2.s19 firmware and ran the config
> > program again replacing the firmware and it came right up.
> > Mostly just reporting this so others can benefit from what I
> > thanks for your assistance.
> > See you in Dayton.
> > Bruce, KQ4TV
> > On May 2, 2007, at 3:11 PM, scott@... wrote:
> >> If you open it up, you should see the LEDs blink at power-up.
> >> They may be blinking constantly if the firmware is corrupted. As
> >> long as it's still blinking, the config program should be able to
> >> catch the bootloader and let you reload the firmware. You could
> >> probably do it without the config program, too, but you'd probably
> >> need to come up with a way to send the right byte sequence to
> >> start the XMODEM download mode.
> >> If it's not blinking at all, then it's possible the firmware got
> >> wiped out completely. As far as I can remember, I've only had
> >> that happen with overvoltage conditions, like 9 volts on the IRQ
> >> pin. If it is totally blank, then you'll need to send it back for
> >> reprogramming.
> >> I'll see if I can duplicate the problem myself. I might need to
> >> set up the low-voltage inhibit on the processor.
> >> Scott
> >> From: Bruce W. Martin [mailto:yahoo@...]
> >> To: OT2 [mailto:email@example.com]
> >> Sent: Wed, 02 May 2007 12:52:15 -0700
> >> Subject: [tracker2] T2-135 lessons being learned
> >> So, I got my T2-135 and installed it. Easy.
> >> After a few hours of trying different serial cables and different
> >> computers realized I needed to put the DR-135 in data mode to
> talk to
> >> the T2.
> >> Great! I can make changes with my Mac using Zterm or use the
> >> latest OT
> >> configuration program on Windows. I need to find something other
> >> minicom for Linux.
> >> Hooked up the GPS and an antenna and it tracked great.
> >> Wanted to see how long the tracker would last on low power with a
> >> 3 year
> >> old UPS 7AH battery. Not as long as I hoped. Set it up in the
> >> truck as I
> >> went to work. Left it running with smart beaconing at about 90
> >> minutes
> >> while moving slow. After work I found the radio power cycling.
> >> under load the battery would drop below some voltage threshold and
> >> the
> >> radio would turn off. Immediately the voltage would go up some now
> >> that
> >> there was no load and the radio would turn on. This cycle went
> on for
> >> who knows how long. Probably a few hours.
> >> Now I can't communicate with the T2-135. Have I killed it? Is
> there a
> >> way I can get it back to default condition?
> >> Bruce, KQ4TV
Bruce W. Martin, KQ4TV
8749 Lebanon Rd.
Mt. Juliet, TN 37122
36 13.990N 086 28.220W
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