Nidek Medical AR-310A, Service Manual

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XAR17ARDA001G/E
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7 . Subjective measurement of refractive error (AR-360A and ARK-560A)
Spherical power (S) -20.00 to +20.00 D (VD = 12 mm)
0.25 D increments
Cylindrical power (C) -8.00 to +8.00 D (AR measurement is used. The max-
imum value may be restricted depending on the SPH
value.)
0.25 D increments
Cylinder axis (A) 0 to 180°(AR measurement value is used.)
1°/5°increments
ADD power 0 to +9.75 D
0.25 D increments
Chart Alphanumeric charts
VA 20/200, 20/80, 20/60, 20/50, 20/40, 20/30, 20/25, 20/20,
or 20/200 to 20/20 (entire)
VA 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0, or 0.1 to 1.0
(entire)
Distant vision
20/200 or lower, 20/200, 20/80, 20/60, 20/50, 20/40, 20/30,
20/25, 20/20
0.1 or lower, 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0
Near vision
20/200 or lower, 20/200, 20/80, 20/60, 20/50, 20/40, 20/30,
20/25, 20/20
0.1 or lower, 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0
8 . Uncorrected visual acuity measurement (AR-360A, ARK-560A)
Measurement range 20/200 or lower, 20/200, 20/80, 20/60, 20/50, 20/40, 20/30,
20/25, 20/20
0.1 or lower, 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0
Chart VA 20/200, 20/80, 20/60, 20/50, 20/40, 20/30, 20/25, 20/20,
or 20/200 to 20/20 (entire)
VA 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0, or 0.1 to 1.0
(entire)
9 . Working range of auto tracking
Up and down ±16 mm or more
Right and left ±5 mm (except AR-310A and ARK-510A)
back and forth ±5 mm (except AR-310A and ARK-510A)
10. Movable range of horizontal
direction
Back and forth 36 mm or more
Right and left 85 mm or more
11 . Other functions
Auto shot The measurement automatically starts when the eye
is properly aligned.
Alignment/observation
method 5.7-inch color LCD panel
Printer Thermal line printer with auto cutter
Width 58 mm
Interface connectors RS-232C: Two ports (IN/OUT: two-phase connectable
system)
USB: One port
LAN: One port