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GeoMax Zenith60 / 40 RTK Setup: X-PAD Ultimate

Set up the GeoMax Zenith60 and Zenith40 with RTKdata NTRIP in X-PAD Ultimate. Receiver 4G or controller internet, mountpoint AUTO, GGA, and Zenith Manager.

The GeoMax Zenith60 and Zenith40 are professional survey-grade GNSS receivers by GeoMax (Hexagon). The Zenith60 is the flagship model featuring IMU-based tilt compensation, an integrated 4G LTE modem, and optional UHF radio. The Zenith40 is a mid-range model with similar NTRIP capabilities. Both receivers are configured through X-PAD Ultimate Survey software running on an Android controller or tablet, or alternatively via the Zenith Manager web interface.

Requirements

  • GeoMax Zenith60 or Zenith40 powered on with clear sky visibility

  • X-PAD Ultimate Survey on an Android controller or tablet (Android 8.0+)

  • Internet connection via the receiver's built-in 4G modem (SIM card inserted), phone hotspot over Wi-Fi, or controller mobile data

  • RTKdata.com account with active RTK credentials (username starting with rtk and password from your RTK dashboard)

  • Survey pole with GeoMax adapter

Don't have an RTKdata.com account yet? Start 30-day Free Trial or View Pricing

Step-by-step setup via X-PAD Ultimate Survey

1

Connect to the receiver

  1. Power on your Zenith60 or Zenith40 and wait for satellite tracking to begin (LED indicators will show satellite lock).

  2. Open X-PAD Ultimate Survey on your controller.

  3. Go to Tool menu and select Connect (or tap the receiver connection icon).

  4. Select your Zenith receiver from the Bluetooth device list and pair it.

  5. Once connected, X-PAD will display the receiver model and status.

2

Set up internet connection

  1. If using the receiver's built-in 4G modem (Zenith60): insert a SIM card into the receiver's SIM slot. The receiver handles the internet connection internally.

  2. If using controller internet: ensure your Android device has mobile data or is connected to a phone hotspot.

  3. In X-PAD, go to Tool > GNSS Configuration > Internet and verify the connection type matches your setup (Receiver Network for internal SIM, PDA Network for controller internet).

The Zenith60's built-in 4G LTE modem (Quectel EG25-G) supports LTE FDD, TDD, UMTS, and GSM bands. If using the internal modem, you may need to configure the APN for your mobile carrier under the receiver's network settings.

3

Create an NTRIP rover profile

  1. In X-PAD Ultimate, go to Tool > GNSS Configuration > Working Mode.

  2. Select Rover as the working mode.

  3. Under Connection Mode or Data Link, select Network (NTRIP).

  4. Tap New or Edit to configure the NTRIP server profile.

  5. Name it RTKdata.

4

Enter RTKdata.com NTRIP settings

Fill in the NTRIP connection fields. Select the tab for your region:

  • Host (domain): rtk.rtkdata.com

  • Host (IP fallback): 13.56.117.10

  • Port: 2101

  • Username / Password: From RTK Credentials in the internal dashboard (not website login)

  • Mountpoint (ALL CAPS): AUTO

  • Host (domain): eu.rtkdata.com

  • Host (IP fallback): 3.73.41.96

  • Port: 2101

  • Username / Password: From RTK Credentials in the internal dashboard (not website login)

  • Mountpoint (ALL CAPS): AUTO

  • Host (domain): aus.rtkdata.com

  • Host (IP fallback): 54.206.56.130

  • Port: 2101

  • Username / Password: From RTK Credentials in the internal dashboard (not website login)

  • Mountpoint (ALL CAPS): AUTO

Type AUTO manually in all capital letters. Do not browse the mountpoint table — X-PAD may time out or return an empty list if the source table is large.

5

Enable GGA position sending

  1. In the NTRIP profile settings, ensure Send GGA (or Send NMEA GGA to caster) is set to On or Automatic.

  2. This sends your approximate position to RTKdata so the correct nearest base station corrections are generated for your location.

RTKdata will not send corrections unless it receives your rover's GGA position. If GGA sending is disabled, the connection will appear successful but no corrections will arrive.

6

Start the RTK survey

  1. Tap Apply or OK to save the rover configuration.

  2. Return to the main survey screen and start a new survey or continue an existing project.

  3. X-PAD connects to the internet, then to the RTKdata NTRIP caster.

  4. Watch the solution status: Autonomous > Float > Fixed.

  5. Once Fixed, you are ready to collect points, stake out, or run your survey workflow.

Alternative: Setup via Zenith Manager (Web Interface)

The Zenith60 and Zenith40 also expose a web-based configuration interface called Zenith Manager when connected via Wi-Fi or USB:

  1. Connect your phone or laptop to the receiver's Wi-Fi hotspot.

  2. Open a browser and navigate to the receiver's IP address (typically shown on the receiver display or in its documentation).

  3. In Zenith Manager, go to Configure > Rover > Network.

  4. Enter the NTRIP caster details (host, port, mountpoint, username, password) as listed above.

  5. Select Connect GPRS in the status panel to start receiving corrections.

This method is useful for quick testing or when X-PAD is not available.

Zenith60 tilt compensation

The Zenith60 features IMU-based tilt compensation. Once RTK Fix is achieved, tilt compensation activates — you can measure with the pole tilted without leveling. The Cube-a or X-PAD software will prompt you to initialize the IMU sensor if needed (walk a few steps). Initialization typically takes only a few seconds.

Vertical reference (heights)

Heights from RTKdata.com are ellipsoidal, not orthometric (mean sea level). Configure a geoid model in X-PAD under your project coordinate system settings if your project requires orthometric heights.

Troubleshooting

Problem
Cause
Fix

No internet connection

SIM card not active or APN not configured

Check that the SIM card has data. Configure the correct APN for your carrier in the receiver's network settings.

Empty mountpoint list

Source table timeout or wrong host

Do not browse — type AUTO manually in all caps. Verify the host address.

No corrections received

GGA sending disabled

Enable Send GGA in the NTRIP profile settings. RTKdata requires GGA to select the nearest base.

Stuck on Float

Poor sky conditions or far from base

Move to open sky. Check RTKdata base coverage at rtkdata.com.

Credentials rejected

Using website login instead of RTK credentials

Use the username (starting with rtk) and password from your RTK dashboard, not your website account.

"Connection failed" in X-PAD

Wrong network type selected

Ensure you selected Network (not UHF or Bluetooth) as the data link for NTRIP.

Tips and tricks

  • The Zenith60's built-in 4G modem eliminates the need for a phone hotspot — insert a SIM card and the receiver handles internet connectivity independently.

  • Save the NTRIP profile so your entire crew can load it on their controllers without re-entering settings.

  • Zenith40 users without a built-in modem should use the controller's internet (PDA Network) or pair a phone hotspot.

  • Check "Correction age" on the X-PAD status bar. Values above 5 seconds indicate an unstable internet link.

  • Keep firmware updated via GeoMax's firmware update tools to benefit from the latest constellation support and RTK improvements.

  • X-PAD Ultimate is also compatible with other GeoMax GNSS receivers (Zenith06, Zenith10, Zenith20) using the same NTRIP settings.

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