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- Installing and calibrating light array (see Light Installation).
- Setting black and white saturation gain levels (see Maximum Dynamic Sensor Range).
- Setting color balancebalance Author: Where is this covered?
- Making camera corrections (see Routine Camera Adjustments).
- Setting track velocity (see Track Speed Example).
- Adjusting knee slope, if needed (see Procedure: Iterative Adjustment).
- Performing QA/QC to confirm camera settings (see Quality Assurance/Quality Control).
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The laboratory technician calibrates the system when needed by adjusting camera settings and analyzing an imaged Kodak Q13 grayscale standard.
Calibration adjustments are performed using an iterative process of imaging a ruler placed crosswise on the track then counting the pixels between millimeter marks, moving the camera up or down, and repeating. See See <LINK> [Author: Where is this procedure documented?] for details on this procedure.
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Sample and Analysis Components
Analysis Code | Component | Description |
IMAGES | adapter_mag |
|
adapter_tube |
| |
comment |
| |
compound_field_of_view |
|
contrasting_method |
| |
dimension_horizontal |
|
dimension_vertical |
| |
file_create_date |
| |
filename |
|
filesize |
| |
filters |
| |
illumination_type |
| |
light_source |
|
objective |
|
objective_field_of_view |
|
objective_mag |
|
ppi |
|
total_magnification |
| |
tube_field_of_view |
|
Uploading Data
After section is imaged, select the Ends of Material Points > Save, and a virtual label with section identification will attach to the saved image while the concatenation endpoints are recorded to the LIMS.
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Common problems encountered when using the core imager and their possible causes and solutions:
Issue | Possible Causes | Solution |
Actuator squeal | NA | Lightly tap the actuator housing to silence the noise |
Image too dark | Manual F-stop on the camera closed down | Have technician adjust F-stop aperture |
Exposure time is too low | Increase exposure time |
Focused lights are not aimed at the correct spot | Adjust lights |
Track is |
“stuck” | Run was aborted with the software abort switch | Reset software and run sample again |
Run was aborted with the hardware abort switch | Reset hardware and run sample again |
Gantry flag has tripped the end-of-travel limit switch | Adjust gantry flag and run sample again |
Current limit on motors was exceeded | Check the Galil AMP-19520 for LED error indicators. Call track technician or ET to reset the motor controller |
Torque limit on motors was exceeded. <we need to check how Labview handles this!>[djh1] |
| |
Image indicates that camera was triggered erratically OR no image acquired | Camera was left in Free Run mode in MAX | Set camera to Externally Triggered for normal operation |
Linear encoder head has failed | Call an ET to verify/repair |
Lens cap is on | Remove cap and repeat image capture procedure. |
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Scheduled Maintenance
Frequency | Task |
|---|---|
Daily | Ensure that the color standards, ruler, and barcode imager lens are free from dust, smudges, and crumbs. |
Weekly | Using a mirror, ensure that there are no fingerprints or smudges on the camera lens. Call the imaging specialist if the lens needs cleaning. Do not attempt to clean it yourself! |
Monthly | Check socket head cap screws in the camera and lights mounting plates for looseness. |
Every Expedition |
|
Annually |
|
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