LS+ Options Questions

[Eric Tweet]

Howdy, fellow surveyfolk. Long-time lurker here.
I've been a happy Javad user for ages. Cut my teeth on Legacy receivers, inherited some ancient Hipers thereafter (Javad under the hood, of course), and have been proudly wielding a pair of Triumph-1 units for the last handful of years.

And it's finally time for another change. The LS+ has floated to the top of my must-have list.

So here are a few questions I've run into that I'm hoping someone might be able to help me knock out as I gaze longingly at the product page:

1. Regarding the modem options, are all of the choices for a given category of modem the same? In other words, are all of the UHF modems both Rx and Tx except where they only show "Rx" in the description? (perhaps some options are necessary for using the LS as a base, while others are "rover-only")
2. When using an LS rover with something like a Triumph-1 base and therefore only having dual constellations available for use, does the LS still show noticeable improvements in things like time to fix, under-canopy performance, etc. over a T-1 rover?
3. Can the LS output tilt values (NMEA or otherwise), say for applications like recording data alongside sonar operation for post-processed "beam steering"?
4. I recall seeing at some point that there was a payment plan available at least for LS purchases - is that still a thing?

Thanks in advance!

 

[Adam]

1. If it says Rx and Tx the modem is able to transmit and recieve. You can option an LS as a UHF Rx/Tx, FHSS Rx/Tx, or UHF/FHSS Rx only (2 Kings model).
2. It will perform better than a standard LS with gps and glo only but i'm not sure how much. I've not used the Plus with gps and glo only.
3. I'm not sure. Maybe one of the engineers can comment on this.
4. Yes, as well as third party financing thru First Western.

 

[Matt Johnson]

Can the LS output tilt values (NMEA or otherwise), say for applications like recording data alongside sonar operation for post-processed "beam steering"?

NMEA data can be output but I don't believe there is a standard NMEA message for tilt data. Trimble uses a proprietary PTNL,AVR message for this.

 

[Matthew D. Sibole]

I believe that the Javad financing is on a complete system. I will have to check on that to make sure.

 

[Eric Tweet]

@Adam Thanks! I think that clears up the modem question. I suppose, for example, the UHF+Cellular option would mean UHF Rx/Tx alongside normal Cellular. (Probably what I'd choose for interoperability with a T3 having the same configuration, when I get one!).

@Matt Johnson - I took a glance at the GREIS manual and likely found the answer. Looks like the standard GREIS [AR] message might do the trick, or even the raw IMU/ADU data messages if I felt "inclined" to compute angles manually. Interestingly, the JNS proprietary NMEA message "ATT" appears to include Pitch and Heading, but doesn't mention Roll. One way or another, it does appear that angles can be extracted.

@Matthew D. Sibole Much appreciated. Looking at the cost of an LS+ with the configurations I'm pondering, I oughtta be able to squeeze it into a single wire transfer, so I'm mostly just familiarizing myself with what payment options are on the menu at the moment - nothing terribly critical.

 

[Adam]

Right. For cellular select cdma or gsm depending on your service.