When switching between PPP services, the LD3S unit must have a power reboot performed. If the LD3S does not receive a reboot, the solution will become unstable.
To complete this, remove power from the LD3S, wait 15 seconds and reapply power.
Note: The use of PPP services with LD3/LD3S is not available when a DG14 or DG16 GPS card is fitted.
When using an LD3S with a PPP service (Apex or Ultra), the user is able to change the selected PPP service being computed. To perform this action Septentrio Rx Tools software is required. The option to switch PPP service is found in the Rx control module. From the main menu select Navigation > Positioning Mode > Differential Corrections, then select the desired PPP service (if Apex and Ultra services are enabled on the unit):
PPP Selection Page