> For the complete documentation index, see [llms.txt](https://docs.premium-positioning.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.premium-positioning.com/guides/topcon-gr-5-hiper-sr.md).

# Topcon GR-5 / HiPer SR

These steps connect a Topcon GR-5 / HiPer SR to the Premium Positioning correction network over NTRIP, using MAGNET Field. They assume you already have your NTRIP credentials.

### Before you start

* Your NTRIP username and password, from your Premium Positioning welcome email or your account on the customer portal.
* MAGNET Field.
* A working internet connection on the controller or phone.
* A clear view of the sky at the point you are measuring.

### Network settings

These are the same for every Premium Positioning customer. Only your username and password are unique to you.

* Server or host: rtkpremium.xyz
* Port: 2101
* Mountpoint: COMMON
* Protocol: NTRIP

### Steps

1. Power on and connect the receiver: Switch on the GR-5 / HiPer SR and the MAGNET Field controller. In MAGNET Field open a job, then tap the Connect / Bluetooth icon (or Configure > Connections) and pair the receiver. Confirm connected status before continuing.
2. Open the survey configurations: Tap Configure, then Survey. Under GPS+ Configuration (sometimes GNSS/Survey configuration) tap the list / three-dot button, then Add (+) to create a new one.
3. Choose a Network RTK configuration: Name the configuration and set Type to Network RTK (the rover-over-internet mode used for a caster).
4. Set the Rover Receiver options: On the Rover Receiver tab select Receiver Model (GR-5 or HiPer SR), set Protocol to NTRIP, and set the Antenna to match. Set Antenna Height to your actual pole height.
5. Set the data link to the controller modem: On the Rover Modem tab set Modem / Connect to Controller, so MAGNET uses the controller's own internet (Wi-Fi or SIM) rather than a radio. Make sure the controller has working internet.
6. Enter the caster host and port: In the network/internet settings enter Host: rtkpremium.xyz and Port: 2101. Confirm Protocol is NTRIP.
7. Enter YOUR NTRIP username and password: Enter the NTRIP user name and password from your Premium Positioning welcome email - unique to your account; do not use example values or leave blank.
8. Save and start the survey: Save the configuration, then select it as the active Survey configuration. Go to Survey / Topo to begin and trigger the caster connection.
9. Load the source table (mount point list): On connect, MAGNET requests the source table. If it doesn't load automatically, tap the mount-point drop-down (a 'no mount point to connect to automatically' prompt may appear) to fetch the list.
10. Select the COMMON mount point: From the source table choose COMMON (sort by Mountpoint/Format/Distance to find it) and confirm.
11. Connect to the caster: Tap Connect. MAGNET logs in with your credentials and streams corrections - look for a 'Data received' indicator.
12. Confirm a Fixed solution: Watch the solution status move Autonomous/Standalone → Float → Fixed (usually under a minute with good sky). Only record/stake once Fixed. If it stays Float, re-check internet, the COMMON mount point, and your credentials.

### If the fix will not hold

The controller needs working internet (Wi-Fi or SIM) because Modem Connect is set to Controller. Menu wording differs slightly between MAGNET Field versions (GPS+ Configuration vs GNSS/Survey configuration, Rover Modem vs Rover Internet) - match the closest equivalent. Same MAGNET Field workflow as Topcon HiPer VR and Sokkia.

For more, see RTK corrections troubleshooting and Fix inconsistent RTK accuracy on site.

### Need help

Support is available 24/7. Include your receiver model, the mountpoint, the solution status, and the correction age when you get in touch.