Yeasn YPA-2100, Руководство пользователя, Страница: 25 / 91

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5.2.4 System parameter setup
1.Press to enter system parameter setup interface
2. Select needed parameter to change parameter setup.
3. When the setup is finished, press “exit” to return to testing interface.
Detailed parameters are set as follows:
AXIS step : 1°, 5°; Factory default: 5°
Set step size for cylindrical axis, selectable between 1°and 5°.
△
step : 0.1
△
, 0.5
△
; Factory default: 0.5
△
Set step size for prismatic power, selectable between 0.1
△
and 0.5
△
.
△
Angle step: 1°, 5°; Factory default: 5°
Set step size for prism base, selectable between 1°and 5°.
SPH step : 0.12D, 0.25D; Factory default: 0.25D
Set step size for small spherical power, selectable between 0.12D and 0.25D.
The default setup for big spherical power (1D or above) is 1D.
Slit step : 1°, 5°; Factory default: 5°
Set step size for single-slit axis, selectable between 1°and 5°.
△ Display: X/Y and r/ θ ; Factory default: r/ θ
Selectable between rectangular coordinate (X/Y) and polar coordinate (r/ θ ).
CYL Sign: + and -; Factory default: -
Set the input method of cylindrical power.
When “-” is set, negative cylindrical power can only be input; When “+” is set, positive cylindrical
power can only be input.
XC Type: ±0.25D,±0.50D and Auto; Factory default: ±0.25D
Set the crisscross cylinder in the testing window, Shift among 0.25 XC, 0.50 XC and Slit Prism.
XC Auto Occlusion: on, off; factory default: on
Set this item “On” during crisscross cylinder test, the testing content changes according to
cylindrical power value.
When the cylindrical power value C = 0, prompt message “skip crisscross cylinder test?” occurs:
“Yes” means, don’t carry out crisscross cylinder test;