Troubleshooting device installation – Ocean Optics OOISensors User Manual
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7: Troubleshooting
Issue Possible
Cause Resolution
High response times 
when measuring 
Samples 
Sample condition may be 
adversely affecting response 
time, or sampling port (on 
needle probes) is obstructed. 
Confirm that the sample is not viscous slurry. If 
this is the case, response times may range from 
5 to 15 minutes. 
Ensure that the sampling port of the needle 
probe is unobstructed, if applicable. 
oxygen 
measurements are 
drifting 
Unstable sample temperatures 
can cause drift. Additionally, 
drift can occur in either the 
LED or the probe (or both). 
Ensure that the sample temperature remains 
stable during measurement. 
To determine if the LED or probe is responsible 
for the drift, open OOIBase32 or SpectraSuite 
and run a time acquisition. Monitor the LED 
peak (if possible) and the fluorescence peak. 
For more information on using OOIBase32 or 
SpectraSuite, consult the appropriate 
instructions on the Ocean Optics website at 
When calibrating the 
Fiber Optic Sensors 
System, the intensity 
counts do not 
change. 
The fluorescence peak is 
saturated, or the software has 
stopped responding. 
Verify that the fluorescence peak is not 
saturated and that OOISensors is still 
responding. If necessary, reboot the system and 
restart OOISensors. 
LED is saturating the 
entire spectrum. 
Hardware failure or 
configuration error. 
Verify that the bifurcated fiber is not broken, and 
replace the fiber if necessary. 
Verify that you properly connected the 
bifurcated fiber to the sensors system, and 
correct if necessary. 
Troubleshooting Device Installation
If you connect your Ocean Optics USB or PCI device to the computer prior to installing your Ocean 
Optics software application, you may encounter installation issues that must be corrected before your 
Ocean Optics device will operate properly. 
Follow the applicable steps in this document to remove the incorrectly installed device, device driver, and 
installation files. 
Note
If these procedures do not correct your device driver problem, you will need to obtain the 
Correcting Device Driver Issues document from the 
FOXY-AL300-000-02-0207
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