NavCom StarUtil-3000 Rev.G - Manual (Page 89)

StarUtil 3000 User Guide – Rev G
5-87
Verify RTK Extend Is Active
To verify that RTK Extend is active during a radio communication outage:
1. Ensure that RTK Extend is enabled (see the section immediately above).
2. Allow the receiver to obtain an RTK fix and verify that the StarFire signals are under track
(refer to Chapter 7/StarFire Performance). This typically occurs about 4 minutes into
operation. Once both of these conditions are met, turn off or disconnect the RTK radio
modem.

For best performance, StarFire convergence is required. Convergence usually
requires 30 min of continuous tracking. However, for RTK Extend to achieve
maximum performance, the rover must be fully converged, which typically requires
one (1) hour of operation.
3. Determine if RTK Extend is active on the PVT tab/Navigation Status window. RTK Extend is
active if the rover’s Nav Mode is: RTK X:StarFire RTG.

RTK Extend is not active if the rover’s Nav Mode is: RTK X:Unknown.

The Position FOM follows the StarFire Dual:RTG: 3D: Dual freq navigation mode,
but the positioning accuracy will stay at RTK levels (approx. 1cm) during the RTK
Extend period. View the Position FOM on the PVT Tab/Error Estimates Window
(see Figure
138).