Frequently Asked Questions

Performance and Compatibility

Do I need an internet connection to use Trimble SiteVision?

Trimble SiteVision can be used without an internet connection. However, you need to have previously downloaded your models from Trimble Connect to the field device, and also be aware that GNSS corrections will only be received via satellite.

An internet connection is required to:

  • Download models from Trimble Connect for viewing
  • Obtain high accuracy GNSS positions when using the Trimble Corrections Hub or NTRIP
  • Sync ToDo’s and measurement data from the field to the office

Please note, the minimum recommended network speed is 3G.


How accurate is Trimble SiteVision?

The accuracy of Trimble SiteVision is dependent on a number of factors: GNSS environment, length of line being measured to, type of Android mobile device being used with the Trimble SiteVision Integrated Positioning System, camera alignment on Trimble SiteVision for Trimble Rugged hardware.

GNSS Accuracy:

Trimble SiteVision and the Trimble Catalyst Antenna

In areas with VRS Now coverage or where you use a 3rd party VRS service or Internet Base Station Service (IBSS), the SiteVision system will typically achieve horizontal and vertical accuracies of a few centimeters.

If you are operating in an area that does not have VRS coverage, the Trimble Corrections Hub will select the RTX service. When using the RTX services the horizontal accuracies will vary by location, but are typically 10 – 20 cm (4 – 8 inches) in areas with RTX Fast coverage, after convergence, and 30 cm (12 inches) in areas without RTX Fast. Vertical accuracies will vary when using the RTX services.

Trimble SiteVision and the R12i or SPS986 Receiver

In areas with VRS Now or RTX Fast coverage, or where you use a 3rd party VRS service, IBSS, or local base station linked via radio, the SiteVision system will typically achieve horizontal and vertical accuracies of a few centimeters.


The EDM unit has a range of up to 100 m (300 ft) depending on the target type surface and lighting conditions, but in most outdoor environments the practical range is about 25m. For accurate operation (< 20 cm / 8 inches) Trimble recommends that you use it at range of 0.5 m to 10 m (1.5 ft to 30 ft), or up to 25 m (80 ft) to record features requiring lower accuracy (such as trees). For more information download the SiteVision Datasheet, or read more about Trimble SiteVision accuracies in the in app user guide.

What devices are compatible with Trimble SiteVision?

Trimble SiteVision runs on mobile devices, smaller than 8”, supporting Google Play Services for AR and minimum Android™ Operating System Version 9.0. There are over 400 Google AR Services compatible phones to choose from.  Google maintains a complete list here so you can check if your specific device is supported. Trimble has tested a range of compatible phones, and recommends the following devices based on this testing:

Samsung S20+

Samsung S10+

Samsung S10 5G

Samsung S9+

Samsung Note8

Google Pixel 4 XL

Notes: Although Trimble Catalyst Service and Google Google Play Services for AR can run on a number of mobile devices, the requirements for SiteVision differ due to the combination of the processing requirements of Trimble Catalyst softGNSS Receiver, Google Google Play Services for AR, and data processing.

Trimble SiteVision for Trimble Rugged hardware runs on the following Trimble devices powered by the Windows 10 operating system:

Trimble TSC7 controller / Trimble Ranger 7 data collector / Spectra Geospatial Ranger 7 data collector

Trimble T7 tablet / Trimble Yuma 7 tablet computer

It also requires one of the following Trimble GNSS receivers, with tilt sensor technology, connected to the device via Bluetooth technology:

Trimble R12i GNSS receiver

Trimble SPS986 GNSS Smart Antenna

Can I use Apple OSX or iOS devices with Trimble SiteVision?

No. Trimble SiteVision is only available on Android Mobile phones that support Google Play Service for AR, with a minimum operating system of Android 9, and on field controllers powered by the Windows 10 operating system.

What is the maximum file size I can use with SiteVision?

If you are using a model over 200MB in size, a warning will be displayed in SiteVision highlighting that the time to download the model from Trimble Connect may take some time. You will have the option to continue or cancel the download.


This is a combination of the lines and number of meshes or triangles used to build surfaces. For recommended and supported devices this is:

Device Geometry Limit
Samsung S20+ 8 million
Samsung S10+ 8 million
Samsung S9+ 6 million
Samsung Note 8 6 million
Samsung S8+ 3 million
Google Pixel 4 XL 6 million


For other Android devices the geometry limit is set based on the available RAM memory. The limits are:

RAM Geometry Limit
3GB 1.5 million
4 – 6 GB 3 million
> 6GB 6 million


Windows Devices Geometry Limit
TSC7 / Ranger 7 6 million
T7 / Yuma 7 6 million