
Chapter 6 Troubleshooting
SMART2 Installation and Operation Manual 1
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Refer to Table: HWMONITOR Status Table in the
HWMONITOR
log section for a description
of the Boundary Limit Status.
4. Use the suggestions in
Mitigating High Receiver Temperature
on the previous page to reduce
the receiver temperature.
5. Continue monitoring the
HWMONITOR
log to see if receiver temperature is dropping.
6. Check the
RXSTATUS
log to see if the temperature status changes to Okay (Bit 1 in the
Receiver Status word changes to 0).
6.4 Safe Mode
Safe Mode is an error condition triggered on the SMART2 if it encounters certain critical prob-
lems during start-up. The receiver does not track GNSS satellites in this state, but the user inter-
face is still available to allow for diagnosis of the problem.
The receiver will enter Safe Mode under certain rare cases including the following:
l
Corrupted or bad data within the receiver Non-Volatile Memory (NVM).
l
An unsupported Auth Code.
l
The expected main firmware image could not be found by the boot code. This is possibly due
to an error during the main firmware loading process (i.e. WinLoad, SoftLoad, etc.).
Safe Mode exists to allow users to take steps to recover the receiver after such an error occurs.
Potential recovery steps are described in
Safe Mode is indicated by an error bit in the
RXSTATUS
log.
6.4.1 Reset Loop Detection
In order to determine when the Safe Mode error should be triggered, the SMART2 has the ability
to detect when an unexpected reset has occurred during the boot process. If a Reset Loop is
detected, the
Reset Loop Detected
bit is set in the
RXSTATUS
log.
This bit is only a warning and the receiver may still be able to operate correctly. The receiver
will allow several unexpected resets to occur before triggering the Safe Mode Error, at which
point the receiver will not track GNSS satellites.
6.4.2 Recovery Steps
If the
Safe Mode
error bit or the
Reset Loop Detected
warning bit are set in the
RXSTATUS
log, take the following steps to diagnose and recover the system:
1. Request the
SAFEMODESTATUS
log and determine the current
Safe Mode State
of the sys-
tem.
2. Reference Table: Safe Mode States and find the suggested actions for the current Safe Mode
State.
3. If the suggested actions do not resolve the issue, contact NovAtel Customer Support.