Campbell CR6 Series, Operator'S Manual

Page: 571 / 690

Section 10. Troubleshooting
571
•
A hardware failure, such as memory corruption, occurred.
• Inserting or removing memory cards will generally do nothing to cause
the CR6 to miss data. These events affect table definitions because they
can affect table size allocations, but they will not create a situation where
data recovery is necessary.
Data can usually be recovered using the Datalogger Data Recovery wizard
available in DevConfig
(p. 148).
Recovery is possible because data in memory is
not usually destroyed, only lost track of. So, the wizard recovers "data" from the
entire memory, whether or not that memory has been written to, or written to
recently.
Once you have run through the recovery procedure, consider the following:
If a CRD: drive (memory card) or a USB: drive (Campbell Scientific mass storage
device) has been removed since the data was originally stored, then the
Datalogger Data Recovery
is run, the memory pointer will likely be in the wrong
location, so the recovered data will be corrupted. If this is the case, put the CRD:
or USB: drive back in place and re-run the Datalogger Data Recovery wizard
before restarting the CRBasic program.
In any case, even when the recovery runs properly, the result will be that good
data is recovered mixed with sections of empty or old junk. With the entire data
dump in one file, you can sort through the good and the bad.
10.13 Troubleshooting — Miscellaneous Errors
10.13.1
Voltage Calibration Error!
An input to an analog channel maybe outside ±8 Vdc:
•
Use a volt meter to check between each analog input terminal and a
ground terminal that analog inputs are not greater than ±5 Vdc.
•
Check for condensation which may cause leakage of 12 Vdc into other
regions of CR6 circuitry.
• Check for a loose ground wire on a sensor powered from 12V.
• If a volt meter is not available, disconnect any sensor that is powered
from a 12V source to see if the measurements come back to normal. If
multiple sensors are power by 12V, disconnect one at a time.
10.14 Troubleshooting — Rebooting
Following are ways to reboot the CR6. Rebooting should be a last resort.
Regardless of the method used to reboot, try to collect data from the CR6 before
rebooting as there is a good chance data will be lost during the process. If you
can connect using DevConfig , try to save CR6 settings.
•
Reboot manually in
terminal mode
(p. 567):
> REBOOT