Much of the work I do is GNSS for control. But, we do some deformation surveys (mostly in the summer) with an SX12. We did one last week, and I noticed strange behavior. After setting up on a known point, and taking a backsight direct, the instrument points out to some random direction instead of going back to the backsight for the reverse sighting. Crew is out at a calibration baseline today, and it is doing it again. This is with version 2025.23. Last previous survey we did with the SX12 was a month ago, and it was with 2025.22.
Does anyone else see this behavior? It could also be the instrument. When he gets back I will try it with an S6.
I try to always have the latest version loaded, but sometimes that can be not a good idea...
That does not sound right. It should go straight back to where it was pointing for the second face.
Outside of doing the setup, what happens if you use the instrument controls to change face?
I'm using the same version of Access as you and it hasn't done that with my S7.
Try going into the instrument auto lock settings and disabling the new Geolock feature. It is probably trying to turn to the location of your collector, based on the in-collector GNSS. It’s a nice feature for integrated surveying, but not for standing next to the gun with the collector.
I think we found the issue. There is a new feature called geolock. You have to go into the geolock menu and turn on autolock. I wasn't there but that is what the surveyor who was using it today found. Geolock is probably good for doing topo, etc. But the kind of survey we do is turning rounds to points that we already have coordinates for (i.e. monitoring). So we don't need geolock, we just load coordinates into the DC and turn to points, and then do rounds.
As someone above mentioned, it was probably trying to turn to the location of the data collector, which was right next to it.
Also might like to be aware of Servo/Robotic modes.
Access turn behaviour can change depending on how you connect to the instrument - Cable or BlueTooth vs Radio - beside the instrument or away. Default is automatic choice, but you can control that, and what happens in the Instrument controls.
Those settings are held on the controller, so the same instrument may behave differently for different crews
Yes, Geolock is the issue. It can be good, but needs to be unselected as a default. Perhaps a it can be address in the survey style?
N10,000, E7,000, Z100.00
PLS - IL, MO, AR, KS, MN, KY
But geolock came out before 25.23
@robertusa The newer controllers TSC510, 710 have different internal hardware affecting the quality of geolock. I just got a brand new TSC510 and Geolock works great! The rep told me there are some known issues with older TSC5, and TSC7 and geolock.
N10,000, E7,000, Z100.00
PLS - IL, MO, AR, KS, MN, KY
We had the same issue and backed down a version. It’s a bug what our Trimble rep told us. I have two on this version and we toggle off geo lock and no issues. Hello I is great but the problem is Trimble has it set up to automatically do this. What should happen is it doesn’t start doing it’s thing until you choose say the mt1000 and have tracking enabled. Because many times the controller is at the instrument when taking a BS. And the internal gps on the TSC7 takes a bit to warm up. So it’s all out of whack for a bit. But once you have it locked in she is golden.