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PARAMETER SETTINGS AND MAINTENANCE: Maintenance
∗
A common remedy for network-related errors is restarting the device.
4.2.3
Measurement accuracy check
By using the spherical model eye, the measurement accuracy for refractive power and corneal curva-
ture radius measurement values can be checked.
Perform the check once every 6 months. Also, perform the check if the AR-measured results differ
substantially from subjectively measured results.
1
Stand the spherical model eye with its lens
facing up in the spherical model eye measur-
ing holder.
2
Place the main body on the station.
3
Set the following parameters as shown below:
4
Press
to select the eye to be measured.
Confirm that the
or
indication changes to
or
.
Either eye (R/L) may be selected.
ERROR 772
NO NETWORK ACK
ERROR 972
NO NETWORK ACK (WLAN)
•
Acknowledgment error
The file is deleted within 5 seconds or not renamed.
•
Check whether the capture software on the computer is properly activated.
• Before checking the measurement accuracy, check the measuring window and the spherical model
eye lens for cleanliness. If not clean, use a blower to blow off any dust.
If stained, proper measurement results may not be obtained.
Parameter option
Setting
(Refractive power measurement incre-
ments)
0.12D
(Display unit of corneal curvature radius)
mm
(Corneal curvature radius measurement
display)
R1, R2
Error message
Cause and remedy
Spherical model
eye
• When automatic eye detection is enabled, measurement may not start due to R/L automatic detec-
tion error.
Measurement cannot be started while the error “R/L?” is displayed.
