Applanix POS MV V5 Installation And Operation Manual page 179

Steady red:
Power light - illuminates when the PCS is operating.
Fault Detection
To access the Fault Detection window select View, Faults from the MV-POSView menu bar. This
window, shown in Figure 62, shows the faults detected by the POS MV during operation. A fault is
present if an indicator shows red against any item in the list. Three tabs provide a list of the system health
monitoring items: General, IMU and GNSS Corrections.
If you suspect that a fault condition has occurred, but the Fault Detection window does not show it,
check the Message Log. The Message Log description starting on page 9-9 lists the possible messages
that may appear in the message log. Of interest, at this point, are the items in Figure 62. The monitored
items are organized by category and each fault has a brief description.
If you suspect that the system has developed a fault, note the condition of the indicators on the Fault
Detection window. If necessary, contact Applanix for advice, refer to Technical Support and Service on
page A-1 for procedures.
General Tab
The Primary GNSS pane, Figure 62, shows the status of the primary GNSS receiver and any faults
reported by it. If this pane reports any persistent faults, they could be caused by a faulty GNSS antenna
or its cable.
The Secondary GNSS pane monitors the data gaps from the secondary GNSS receiver. A persistent
loss of secondary GNSS information will prevent GNSS Azimuth Measurement Subsystem (GAMS) from
performing carrier phase differential measurements to determine the heading. Investigate the secondary
GNSS antenna and its cable as a possible cause of persistent data gaps.
Data gaps experienced by both GNSS receivers simultaneously are likely to occur if nearby buildings or
structures block the satellite signals (this is not a system fault). During such data gaps, the POS MV will
continue to navigate inertially with only a gradual degradation in position and heading accuracy.
The Auxiliary GNSS pane reports the status of navigation solutions supplied from any auxiliary GNSS
receiver connected to the PCS.
Copyright © Applanix Corporation, 2017
POS MV V5 Installation and Operation Guide
Logging has failed – check that the device is not full,
and for POS MV V5 and V5-1 check that a USB
memory stick is properly inserted.
Fault
Identification
9-5