Topcon PixelChart PC-50S, Инструкция по эксплуатации, Страница: 22 / 54

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INDICATION OF CHART
INDICATION OF CHART
PC-50S has the functions peculiar to the image indication type. This instruction manual will explain the
charts peculiar to PC-50S. For general indication of chart, refer to the Compu-Vision CV-5000 instruction
manual.
This manual will explain the indication of chart when "F" is used as "Type".
The Compu-Vision CV-5000 instruction manual describes the tests when the charts ACP-8 is
used.
When the test distance is set to 4.25m or more, the visual acuity 0.02 cannot be indicated. When
the test distance is set to 2.75m or less, the visual acuity 2.0 cannot be indicated.
When the instrument is set to indicate the visual acuity, it is indicated at the right side of the chart.
When some large chart is indicated, the visual acuity is indicated at the upper or lower right.
Sometimes, even if the system is set to indicate the visual acuity in big size, it is forcedly indicated
in small size.
Indicating targets at random
While the visual acuity chart is indicated, touch the [Random] button among the function buttons. The
targets arrangement can be changed at random.
The example of use is shown below.
1
Indicate the tumbling E chart [0.2-0.4].
2
Touch the [Random] button.
The targets on the line of "Visual acuity 0.2" are changed at random.
3
Touch the [Random] button again.
The targets on the line of "Visual acuity 0.2" are changed at random.
4
Press the
[ ]
switch.
The targets on the line of "Visual acuity 0.3" are changed at random and are indicated.
5
Press the
[ ]
switch.
The targets on the line of "Visual acuity 0.2" are changed at random and are indicated.
The one character chart's targets can be indicated at random.
When one character is masked on the chart, you cannot use the random indication function.