7-1
7. SPECIFICATIONS
7. SPECIFICATIONS
7.1 MEASUREMENT
• Range
Spherical power (S reading): ± 25D
Cylindrical power (C reading): ±9.99D
Axis of cylindrical power (A reading): 0 to 180 degrees
Addition reading (ADD reading): 0 to 9.99 D
Prism power (P reading): 0 to 9.99 ∆
• Steps
Power: 0.01/0.12/0.25 D
Prism: 0.01/0.12/0.25 ∆
• Modes
Cylinder: + / ± / –
Prism: Rectangular/Polar coordinates
• Sampling speed: 0.035 seconds
• Measurement wavelength: 660 nm
Diameter of the beam: 3 mm
• Lens diameter: 20 to 100 mm
• Lens types: Spectacles, soft and hard contact
lenses
• Abbe numbers: 30 to 60 (5-unit increment)
(30,35,40,45,50,55,60)
7.2 DATA CONTROL
• Display: Two dimensional LCD display with
back light
(character type)
• Alignment: Cross cursor
(Thickens when lens is aligned)
7.3 PHYSICAL DIMENSIONS AND ELECTRICAL REQUIREMENTS
• Dimensions: 200 (W) x 260 (D) x 436 (H) mm
[7.9 (W) x 10.2 (D) x 17.2 (H) in]
• Weight: approx. 5.0 Kg (11.0 lbs)
• Main supply voltage: 100 to 240 V AC
(automatically adjusted)
• Power consumption: 35 VA
• Frequency: 50/60 Hz
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