Trimble VRS Now H-Star Service
H-Star Corrections Delivery Service
Frequently Asked Questions
- How does Trimble VRS Now H-Star service work?
The Trimble® VRS Now™ H-Star™ service provides you with instant access to H-Star corrections throughout its coverage regions. Trimble VRS Now H-Star network delivers precise decimeter-accurate H-Star corrections anywhere in the network, customised for each receiver's exact location.
- Is my Trimble VRS Now H-Star service subscription plan linked to a specific H-Star compatible receiver?
No. A Trimble VRS Now H-Star service subscription plan is not specific to just one H-Star compatible receiver (either the GeoXH™ 2008 series handheld receiver or GPS Pathfinder® ProXRT receiver). Authentication is achieved via username and password only. This feature streamlines resource allocation for multi-crew operations—you can share the one subscription across your workers that have H-Star compatible receivers. Note that only one H-Star compatible receiver can use the service at any one time.
- Should I expect downtime?
The Trimble VRS Now H-Star service is engineered for maximum availability and is managed 24/7 to ensure the highest amount of uptime. There will be infrequent periods of scheduled maintenance that may minimally impact availability. In addition, a reliable cellular or mobile carrier signal is necessary to connect with the system.
- What is the active period for a Trimble VRS Now H-Star service license?
Licenses for Trimble VRS Now H-Star service are offered as an annual subscription to the system. But the flexibility to pay monthly is also offered; feel free to select the payment option that best meets your needs.
- How can I tell if the Trimble VRS Now H-Star service is available in a certain area?
The Trimble VRS Now H-Star service coverage maps show the approximate network coverage area. Generally speaking, Trimble VRS Now H-Star service is available to you anywhere within the dark shaded area of the maps. Cellular or mobile phone service is a critical component to functional operation of the system. Without a reliable signal from your cellular or mobile communications service, your ability to connect with the system will be limited.
- Are there any specific cellular or mobile providers with whom I need to work?
No. Because Trimble VRS Now H-Star service can use both circuit switched (GSM) and packet switched (GPRS) mobile telephony (also UMTS, where available), any carrier offering adequate coverage for the area you are interested in will suffice.
- In addition to a subscription plan, what other components will I need to begin using the Trimble VRS Now service?
All that is needed is an H-Star compatible receiver, and a functioning cellular or mobile phone device with a reliable signal.
- How frequently are new corrections delivered to my receiver in the field?
The Trimble VRS Now H-Star service is optimized to deliver tailored corrections for each receiver in the field once per second. However, latency may be introduced into the system based on the performance of the cellular mobile provider being used.
- Are field base stations obsolete now that Trimble VRS Now H-Star service is available?
No. In many cases all the user needs is a subscription to Trimble VRS Now H-Star service, however, there may be cases when a field base station is more economical. An example is working on a site for extended periods of time with multiple rovers.
- Are there any specific hardware restrictions?
For H-Star corrections, the subscriber needs an H-Star compatible GPS receiver (either the GeoXH 2008 series handheld or GPS Pathfinder ProXRT receiver), a mobile connection and a subscription to Trimble VRS Now H-Star service.
- What correction formats does Trimble VRS Now offer?
Trimble VRS Now H-Star delivers a specific data format specially designed for one decimeter accuracy, which optimally supports the Trimble H-Star compatible receivers that can take advantage of this service (the GeoXH 2008 series handhelds or GPS Pathfinder ProXRT receivers).
