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ZABBYS WELCH ALLYN SPOT SCREENER - PRICE INCLUDES PACKING AND FREIGHT

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Quick Overview

ZABBYS WELCH ALLYN SPOT SCREENER
Product Specifications
Dimensions 8.5 in. x 6.75 in. x 4.75 in. (20.3 cm x 15.2 cm x 10.2 cm)
Weight ~2.55 lbs. (1157 g)
Wireless Network 802.11 b/g/n
Operating Temperatures 50 °F to 104 °F (+10 °C to +40 °C)
Operating Humidity 30% to 95% relative humidity (non-condensing)
Storage/Shipping Temperatures 32 °F to 122 °F (0 °C to +50 °C)
Storage/Shipping Humidity 0% to 95% relative humidity (non-condensing)
Storage/Shipping Atmospheric Pressure 800 hPA to 1060 hPA
Expected Battery Life 2.5 years (under normal usage)

Measurement


Spherical Equivalent Range: -7.50D to +7.50D in 0.25D increments
Accuracy: -3.50D to 3.50D, ± 0.50D -7.50D to < -3.50D, ± 1.00D > 3.50D to 6.00D, ± 1.00D
Cylindrical Range: 0.00D to +3.00D in 0.25D increments
Accuracy: 0.00D to 1.50D, ± 0.50D
> 1.50D to 3.00D, ± 1.00D
Cylindrical Axis Range:: 1 to 180 degrees in 1-degree increments
Accuracy: ± 5 degrees (for cylinder values > 0.5D)
Pupil Size Range: 4.0 mm to 9.0 mm in 0.1 mm increments
Accuracy: ± 0.1 mm
Pupil Distance Range: 35 mm to 80 mm in 1 mm increments
Accuracy: ± 1 mm
Gaze Measurement 0 to 20 degrees in increments of 1-degree nasal, temporal, inferior, and superior
Accuracy: 0 to 5 degrees (± 1 degree) > 5 to 20 degrees (± 2 degrees)
Time Per Measurement 1 second
Measuring Distance 3.3 ft. ± 2 in. (1 m ± 5 cm)
Fixation Target Random visual pattern and audible sound
Measurement Principal Optical reflex

ZABBYS WELCH ALLYN SPOT SCREENER - PRICE INCLUDES PACKING AND FREIGHT

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Details

ZABBYS WELCH ALLYN SPOT SCREENER

 Product Specifications

Dimensions

8.5 in. x 6.75 in. x 4.75 in. (20.3 cm x 15.2 cm x 10.2 cm)

Weight

~2.55 lbs. (1157 g)

Wireless Network

802.11 b/g/n

Operating Temperatures

50 °F to 104 °F (+10 °C to +40 °C)

Operating Humidity

30% to 95% relative humidity (non-condensing)

Storage/Shipping Temperatures

32 °F to 122 °F (0 °C to +50 °C)

Storage/Shipping Humidity

0% to 95% relative humidity (non-condensing)

Storage/Shipping Atmospheric Pressure

800 hPA to 1060 hPA

Expected Battery Life

2.5 years (under normal usage)

 

Measurement

 

 

 Spherical Equivalent

Range: -7.50D to +7.50D in 0.25D increments

Accuracy: -3.50D to 3.50D, ± 0.50D -7.50D to < -3.50D, ± 1.00D > 3.50D to 6.00D, ± 1.00D

Cylindrical

Range: 0.00D to +3.00D in 0.25D increments

Accuracy: 0.00D to 1.50D, ± 0.50D

> 1.50D to 3.00D, ± 1.00D

Cylindrical Axis

Range:: 1 to 180 degrees in 1-degree increments

Accuracy: ± 5 degrees (for cylinder values > 0.5D)

Pupil Size

Range: 4.0 mm to 9.0 mm in 0.1 mm increments

Accuracy: ± 0.1 mm

Pupil Distance

Range: 35 mm to 80 mm in 1 mm increments

Accuracy: ± 1 mm

Gaze Measurement

0 to 20 degrees in increments of 1-degree nasal, temporal, inferior, and superior

Accuracy: 0 to 5 degrees (± 1 degree) > 5 to 20 degrees (± 2 degrees)

Time Per Measurement

1 second

Measuring Distance

3.3 ft. ± 2 in. (1 m ± 5 cm)

Fixation Target

Random visual pattern and audible sound

Measurement Principal

Optical reflex

 

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