Starrett Vision Metrology System AV300

Remove the ring light prior to changing the lens.

If an auxiliary lens is in place, unscrew the lens counterclockwise.

Verify the new lens and exposed lens of the primary optics assembly are clean and dust free.

Carefully screw in the aux lens clockwise, finger-tight only. Do not over-tighten the lens.

Update the lens setting in the QC5000 software. Refer to the QC5000 manual for details.

Sign off on the lens replacement

Parcentricity describes the condition wherein a feature will remain at the optical center of the video image throughout the magnification range.

Place the MAG checker or other suitable inspection part on the stage and secure properly.

Select the M3 crosshair image tool and place the crosshair at its defined center position. The crosshair is to remain at this position during the parcentricity test.

Zoom to low magnification, and adjust the stage position so that the crosshair is centered on the X-Y axis of the calibration standard (or another suitable feature if the standard is not used).

Change to high magnification and refocus the image.

Adjust the stage position as needed to recenter the crosshair on the feature.

While observing the feature, slowly adjust the magnification lower. Verify that the feature remains at the center of the crosshair as the magnification is lowered.

Did the feature remain at the center of the crosshair as the magnification was lowered?

Report any observed discrepancy.

NOTE: The lights of a fiber-optic metrology system generate heat. To preserve lamp life and reduce unnecessary heat buildup, turn the lights down when the system is not in use.

WARNING: Power the system down properly and unplug the unit from the power supply before opening the electronics enclosure.

CAUTION: The lamp bulbs are very hot and can cause burns if not allowed to cool properly.

Do not touch any part of the new bulb when inserting. The inner reflective surface of the lens and the filament housing are particularly susceptible to damage. Oils from fingers and hands can contaminate the surface and shorten the bulb life. Use a clean cloth or tissue, or wear clean latex gloves to handle the new bulb.

Do not to get any part of a tissue or cloth caught in the bulb contacts to avoid a potential fire hazard.

The bulb must be fully seated in the socket to prevent arcing and premature failure of the bulb and damage to the socket.

Verify which lamp needs to be replaced before powering the system down. The lamp sockets are labeled TOP, BOT and AUX corresponding to the three system lights.

Properly power the system down and unplug the unit from the power source.

Using a 2 mm hex wrench, loosen the light bundle retaining screw and remove the light bundle from the heat sink.

• Calibration should be verified periodically depending on user requirements and systems usage, and should be at least monthly. A calibration verification standard artifact is available from Starrett authorized distributors or directly from the Starrett service department.

• Calibration should also be verified after the system has been serviced or moved. The following is a brief description of the steps recommended for the verification of your machine. Complete calibration and verification procedures are available upon request.

1. Place the calibrated verification standard in one the six positions on the glass stage as shown above. Secure the standard with hot melt glue or other suitable retaining method so that stage translation can not move the standard under any condition.

2. Skew the center of the two end circles. Please refer to the M3 manual for proper alignment procedures.

3. Measure the distance between the 1st and 2nd, 1st and 3rd, 1st and 4th, 1st and 5th, and the 1st and 6th fiducials. Repeat these measurements 10 times.

4. Calculate the absolute average deviation for each of the 5 groups of distance measurements.

5. Repeat the measurements for all six locations shown in the illustration.

6. The absolute averages should be within the factory specification, de-rated for the environment and calibration accuracy. See Table 1 - 5, “Travel, Accuracy and Resolution Specifications” for accuracy specifications.;

Area around the system has proper clearance

No debris or loose items around the system and the metrology stage

Work area is clean, dry and free of debris

Electrical power cord is plugged into a grounded power source and is unobstructed

Environmental conditions (temperature and humidity) are within recommended ranges

System has warmed up to normal operating temperature before performing critical part measurements

Stage control mechanisms move freely

On CNC Systems, zoom mechanism operates freely through the software

Sign off on the daily inspection