62
3. Call in the sighting marks and display column sighting marks.
4. Increase BI prismatic power of two eyes until the sighting mark becomes obscure. Press the
obscure icon, and it is highlighted, then save the prismatic power of the obscure point.
5. Increase BI prismatic power of two eyes until the sighting mark splits into two. Press the split
icon, and it is highlighted, then save the prismatic power of the split point.
6. Increase BI prismatic power of two eyes until the sighting mark recovers as one. Press the
recover icon, and it is highlighted, then save the prismatic power of the recover point.
5.5.13 Congregation test
Test purpose: to test the eyes’ congregation capability
Test sighting mark: the column sighting marks in the visual chart
Assistant lens: binocular rotatory prism
Make sure the “Congregation and divergence test” parameter is set “On”.
1 Press “Con” to enter divergence test.
2.Call in the sighting marks and display column sighting marks.
3. Increase BO prismatic power of two eyes until the sighting mark becomes obscure. Press the
obscure icon, and it is highlighted, then save the prismatic power of the obscure point.
4. Increase BO prismatic power of two eyes until the sighting mark splits into two. Press the split
icon, and it is highlighted, then save the prismatic power of the split point.
5. Increase BO prismatic power of two eyes until the sighting mark recovers as one. Press the
recover icon, and it is highlighted, then save the prismatic power of the recover point.
Obscure
Obscur
Recover
Summary of Contents for YPA-2100
Page 1: ...YPA 2100 DIGITAL REFRACTOR User Manual Version 1 0 Date 20180521...
Page 5: ...13 Electrical Schematic Diagram 82 14 Electromagnetic Compatibility 83...
Page 24: ...19 Press to enlarge PD press to reduce PD 3 Press to exit PD input interface...
Page 31: ...26 key...
Page 42: ...37 4 Click key shift to 0 5XC 5 Click the key again shift to automatic mode Slit Prism...
Page 55: ...50 34 Press to finish the test...
Page 78: ...73 3 Click key to popup input box...