[Therion] distance problem with disto
Marco >so this is probably the last survey in the distox memory, >and it is still there. Yes, it is the most recent survey. The errant measurements were transmitted to pockettopo and deleted on the spot before the survey could proceed (logically enough), so as far as I am aware there will be no electronic record they ever happened, unless the distoX or PockeTopo keeps something sneakily stored away... Directly after the trip we replaced the batteries, and recalibrated twice (the delta values were not that great, about 0.7 then 0.4 I think- both have been saved so I could look them up). The site had a few steel drums and pipes nearby. >just for curiosity (and record), could you dump it ? >[can prepare for you a win32 app to do that] If there is something remaining I could try to pull it out. >does pockettopo save to file the raw data exchanged with the distox ? I'm not sure, on the face of it as a non-technical user I'd say no. Bruce
[Therion] distance problem with disto
hi bruce, i had a similar problem once, but it was in a pit with plenty of water, and on the spot i thought it was due to the water splashing around ... > >were all the "wrong" values exactly the same, or just similar ? > As above, I don't know - I had assumed they would be 'identically > incorrect'. > > >did it happen long ago, or recently ? > Saturday 22 January 2011 NZ daylight time. > so this is probably the last survey in the distox memory, and it is still there. just for curiosity (and record), could you dump it ? [can prepare for you a win32 app to do that] does pockettopo save to file the raw data exchanged with the distox ? marco
[Therion] distance problem with disto
Marco Hope it is OK to re-post on the forum :) ... >-Original Message- >From: marco corvi [mailto:marco.corvi at elsagdatamat.com] >Sent: Thursday, 27 January 2011 1:19 a.m. >To: Bruce >Subject: distance problem with disto >hi bruce, >did you mean that the distance shown on the disto display was wrong ? Unsure, I presume the displayed distance matched the distance transmitted. I was driving the pda - I'll check with the distoX operator, as we did have a brief conversation along those lines when it happened. >and that the distance transmitted to pockettopo was wrong as well ? Yes, definitely the wrong distance - was not a units issue, as the next readings were OK (and if I understand correctly 'units' has no effect on the data transmitted- between them the devices can translate I think). >were all the "wrong" values exactly the same, or just similar ? As above, I don't know - I had assumed they would be 'identically incorrect'. >did it happen long ago, or recently ? Saturday 22 January 2011 NZ daylight time. marco
[Therion] Clino units
On Wed, Jan 26, 2011 at 07:07:33PM +, Andrew Atkinson wrote: > The problem encountered is it works on the units of zero as horizontal > and works mathematically, so -10 in caver speak is 350 in total station. > > When this it put into therion (and by association I assume survex) you > get an out of range error. > > gradient reading out of range -- 359 Actually Survex will issue a warning but process this correctly (i.e. as if you'd written -1). > Okay I have solved this by converting all the down ones, but it would be > good if Therion could use this convention. maybe generally giving a > warning that can be suppressed for individual centrelines as a real > icing feature? Perhaps generalising this a bit would be more useful - we could allow the range of valid readings for any instrument to be specified. For your total station you'd put 0 to 360 (or is it 0 to 90 and 270 to 360?) But also if your tape is 30m long, then any reading above 30m is suspect. Distos seem to have a minimum range (about 33cm for mine it seems) as well as a maximum (200m apparently, though you might want to set the warning limit to something lower there). Cheers, Olly
