Interacoustics VO425
Interacoustics · Model VO425
Full visual field stimulation. Assorted stimulus patterns. Easy adaption to different test spaces. Able to import custom stimuli. Fast calibration.
Key tips
- ·When no category-specific guidance fits, default to the manufacturer's own service manual and the general troubleshooting method in the Engineer's Guide.
- ·Run an incoming and annual electrical safety test regardless of how niche the device is.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
No or poor eye-tracking / pupil detection
HighSymptoms: Software cannot find the pupil, tracking drops out, calibration fails.
Root cause: Goggle camera lens dirty or misfocused, IR illuminator fault, poor mask fit / light leak, or a USB / camera fault.
Camera / goggle connection fault
MediumSymptoms: Camera not detected, intermittent video, one eye missing (binocular goggle).
Root cause: USB cable / connector or camera-module fault.
Calibration drift / gaze inaccuracy
MediumSymptoms: Repeated calibration failures, gaze position offset.
Root cause: Camera focus / alignment or a worn goggle frame.
Stimulus (light bar / projector) fault
MediumSymptoms: Optokinetic / saccade / pursuit stimuli not displaying or not synced.
Root cause: Light bar / projector or its interface.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Goggle camera module
Class Periodic replacementRel. cost $$$R&R Moderate
IR illuminator
Class Periodic replacementRel. cost $$R&R Moderate
USB cable
Class Periodic replacementRel. cost $R&R Easy
Goggle mask / cushion
Class Frequent wear itemRel. cost $R&R Easy
Stimulus light bar / projector
Class Major service partRel. cost $$$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Goggle camera module | Periodic replacement | $$$ | Moderate |
| IR illuminator | Periodic replacement | $$ | Moderate |
| USB cable | Periodic replacement | $ | Easy |
| Goggle mask / cushion | Frequent wear item | $ | Easy |
| Stimulus light bar / projector | Major service part | $$$ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Follow the manufacturer's PM schedule
- ·Perform incoming and annual electrical safety testing per facility biomedical program
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Poor eye tracking / pupil detection
- Clean the goggle camera lens and confirm focus.
- Check the IR illuminator is working (view in the software).
- Ensure the mask fits with no light leak and the room is dark.
- Reseat / swap the USB cable.
- Replace the camera module if a good cable does not fix it.
Symptom: Calibration fails
- Confirm the patient is at the correct distance from the stimulus.
- Re-focus / align the camera.
- Run calibration in a darkened room.
- Check the goggle frame is not distorted.
- Refer for service if calibration will not hold.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Varies by device - check the unit's own manual for facility placement guidance
Documents & Manuals
No documents available for this device yet.
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