If there is a loss in connection to the NTRIP server, the RTK age will increase, the byte count will stop and eventually a message on the screen will say 'Connect Failed NTRIP Caster'.
RTK age (left) and Byte count (right)
Connect Failed NTRIP Caster message
If this should occur, please consider the following:
- Ensure the cellular antenna is securely attached to the VBOX Sigma.
- Make sure that the unit is connected to the internet either via the internal GSM modem or an external Wi-Fi hotspot.
- If using the internal 4G modem with a SIM card, ensure that you haven't exceeded your data allowance.
- Ensure that you have an active subscription with your NTRIP provider.
If the VBOX Sigma is not being automatically detected or selectable as a COM port by the Racelogic Upgrader Software during a Firmware Upgrade, it may be the case that the VBOX Sigma USB Driver has not been installed. Download and install the driver from the VBOX Automotive Website and try the process again.
If the USB driver is installed, however you are still having issues updating the VBOX Sigma with a PC, please contact Racelogic Support.
If you are using an external Wi-Fi hotspot to connect to the NTRIP server and there is a loss in connection to the hotspot during operation, a 'Wi-Fi Disconnected' message will display, the Wi-Fi Name on the Network Screen will change to 'Not Connected' and the IP Address on the Network Screen will change to '0.0.0.0'.
Network Screen
The RTK age will also increase, the byte count will stop and eventually the GNSS Status on the Home Screen will display either '2D/3D FIX' or 'DGNSS' depending on the satellites signals being received. If connection has been lost, the unit will keep attempting to connect to the hotspot.
Home Screen
If the Wi-Fi connection is not regained, you will need to power cycle the VBOX Sigma and then either fix the existing external Wi-Fi hotspot connection issue or configure the unit to connect to a different hotspot.
If you are using the USB socket to apply power to the unit, firstly ensure you are using the supplied USB cable (TTV1AM20MB31) as it is needed to deal with the increased power requirements of the unit.
The unit also requires a minimum voltage of 5 V from a dedicated power supply (such as a power bank or mains supply) to function correctly. If the USB connection is not supplying enough voltage to the unit, the screen will display a 'USB power may not be adequate' message.
Pressing any button will restart the unit without the inbuilt NTRIP modem correction facility, however you will still be able to update the firmware of the unit and perform logging without NTRIP corrections.
Using the supplied RLCAB010H cable from the 3-way hirose connector on the bottom of the unit to a vehicle's 12 V cigar power socket instead of the USB for power will rectify this problem and restore full functionality, however if this is not possible, please change the USB power supply method.
If you are still having issues with the VBOX Sigma power requirements, please contact Racelogic Support.