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Leica GPS 1200 satellite tracking problem  

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Moe Shetty
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ok folks,
I brought out a 1200 for some static data collection today, but there was this problem; once on station, the receiver powered up, but only tracked ten out of every sixty seconds. never long enough, of course to record data, only struggle with intermittent tracking.

my initial guess is that it may not have been aired out for a long while and needs the almanac updated. this receiver may not have seen daylight for up to a year.

in the meantime, I will be reading the gps1200 technical reference manual.

thanks for your advice

7 Replies
surveythemark
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Eddie,

If the unit is a GPS1200 GG model you will need to upgrade the Measurement Engine Firmware. There is a known issue that will take place in early versions of the Measurement Engine (ME) firmware for the GG (GPS and GLONASS)models on 27JUL14. The earlier versions of the ME firmware for this series will stop tracking after this date without the upgrade.

There is no need for a current maintenance date for upgrading the ME version of firmware. The needed version of ME firmware is version 3.823

Send back this information:

1. From main menu select the USER key
2. Next choose F3 (STAT)
3. Next choose 3 System Information
4. On the first page (Instrument) look at the top line. If it says GX1230 GG or ATX1230 GG (Smart Antenna) then this is probably the cause.
5. Select F6 (PAGE) once to go tot the Firmware page
6. Send back the main firmware version which is listed on the top line as Firmware: Also send back the Measurement Engine version which should be the 7th Line listed as Meas Engine:
7. If it is a GG model and your Measurement Engine firmware is not 3.823 then it is a simple fix in the ME firmware

Let me know what you find.

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Loyal
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I recall a firmware "problem" with certain Leica receivers a week or two ago!

You might do a search on that.

Loyal

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Moe Shetty
Posts: 1384
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(@moe-shetty)
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Joined: 9 years ago

> Eddie,
>
> If the unit is a GPS1200 GG model you will need to upgrade the Measurement Engine Firmware. There is a known issue that will take place in early versions of the Measurement Engine (ME) firmware for the GG (GPS and GLONASS)models on 27JUL14. The earlier versions of the ME firmware for this series will stop tracking after this date without the upgrade.
>
> There is no need for a current maintenance date for upgrading the ME version of firmware. The needed version of ME firmware is version 3.823
>
> Send back this information:
>
> 1. From main menu select the USER key
> 2. Next choose F3 (STAT)
> 3. Next choose 3 System Information
> 4. On the first page (Instrument) look at the top line. If it says GX1230 GG or ATX1230 GG (Smart Antenna) then this is probably the cause.

no, this is GX1220 inst type

> 5. Select F6 (PAGE) once to go tot the Firmware page

fw v 5.10

> 6. Send back the main firmware version which is listed on the top line as Firmware: Also send back the Measurement Engine version which should be the 7th Line listed as Meas Engine:

main fw version v5.10 build 2404.1512 maintenance is expired
meas engine is v 3.013

> 7. If it is a GG model and your Measurement Engine firmware is not 3.823 then it is a simple fix in the ME firmware

we do not own gg receivers, we do have a gg antenna that was shipped by accident, but it works as a navstar nonetheless

mark, your 4mb cf is still in my office, as I am now getting a different problem with a bad backup battery message. grrr! if you want it back, I will send right away.

>
> Let me know what you find.

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wfwenzel
Posts: 440
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This covers my 1230 model, so I'd guess it covers yours too. It's a cross-model firmware issue.

My Leica rep sent me the instructions Mark provided you in the previous post, so you'd be good to go.

Good luck!

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