Hi all Ashtech People,
I am a Locus user. I would like to buy a Promark II receiver.
But, I wonder if I can use it with my Locus especially in kinematic surveying. I mean that, I set rec interval of my Locus units to 2 seconds in kinematic measurements. As far as I know, I can not set rec int of Promark II to 2 seconds. Please give your suggestions about using Locus with Promark II.
Regards
Birol
Modified By birol Gucluer on 10/26/2001 at 12:18 PM
Can it be done ??? Yes.
I had a discussion with Brian awhile back on this board about that very thing. The caveat is that you only get coinciding epochs every 10 seconds (I think that is what the PM2 is set to.) Therefore you don't need to set the Locus except to the same recording interval as the PM2.
Now with 2 Locus units at 2 sec. you would record 5 epochs in a 10 second observation. To get the same with the mixed pair would take 50 seconds.
I'm sure somebody else will chime in, also.
Jimbo
I have 3 locus and have thought about adding 1 promark II for static work.
Did I hear AS 2.5 is needed for the download from PMII ??
Steve G
Steve,
That's correct, AS 2.5 is the only s/w that can download PM2.
Birol,
Jimbo's post is correct.
My little parking lot project includes one Locus with two ProMark2 GPS receivers. It does work.
You will need to enter the antenna parameters that I came up with until we get the "official" numbers. This information is circulating among the dealers and is available from tech support.
"Unknown" is OK as long as you are not mixing with other receivers but if you want to use different types of receiver/antenna combinations you need to use those proper antenna settings.
Since the ProMark2 is set at 10 seconds and cannot be changed from that it just makes sense to set everything else at 10 seconds.
You could still do kinematic. Just take longer on those points. Guys, keep reminding yourself that it is intended to be a tool for static work that everybody can afford. If you want more bells and whistles there are products for you too.
I posted this about 3 weeks ago ... seems appropraite to say it again:
====================
I did a little test a couple of days ago, using one locus and one promark2. Because the promark has a fixed recording interval of 10 sec., I used an initialization - observation time of 1 minute.
Very interesting results!
Set four points, (all about 100' apart - checking procedure, not accuracy) Promark2 on #1, Locus on #2. Observe until I get one light on Locus. Shut Locus down, turn it back on, synchronize hp-48 kinematic controller, collect 1 minute kinematic on #2, walk to point #3, collect 1 minute kinematic, walk to point #4, collect 1 minute kinematic.
All vectors solve very well. Checked vectors with total station, no blunders, no problems.
In Solutions 2.4, modified "????" observations (interval that it took to walk from point to point) to point 1001, solutions assigns consecutive point numbers to each 10-sec recording interval between kinematic points collected with hp-48. All assigned point vectors solved ±0.2'
Looks like a _GREAT_ potential for rough topo applications.
Ain't technology GREAT!!
Jerry
We have mixed 2 ProMark2 units with 3 Locus units, mixed 3 PM2 units with 1 Locus unit, and a lot of otner combinations. Have not tried any kinematic with PM2 in the mix though. So far, all our horizontals with any combination of mixing have proved successful. Vertical may still be another matter though when mixing antenna types. I love my Locus units, but have really developed an attachment to this Promark2 system. I had some reservations about the battery life at first. Not now. A pair of AA batteries is cheap on a daily basis considering the low cost of the system and what it'll do. We just can't say enough about the Navigation feature for corner search and preliminary mapping.
J.D.