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17
6.2 How to obtain correct Letter Size and focus (Zooming Type
only)
1.
Install chart projector at desired position of 2.5~8m (8~26 feet)
2.
Measure the distance from patient to screen
3.
Refer to the test scale shown in the Appendix A
4.
Have someone hold the test scale at the screen
5.
Project the 20/400(6/120, 0.05) alphabet “C”
6.
Adjust the position of the projector forward or backward and turn the focusing
wheel until “C” is brought in sharp focus within the respective distance scale
Summary of Contents for PACP-6100
Page 1: ......
Page 2: ... PACP 6100 Operator s Manual 1 Operator s Manual Chart Projector ...
Page 21: ...20 PACP 6100 Operator s Manual 8 Types of Chart Type C is Standard Fig 7 Types of Chart ...
Page 31: ...30 PACP 6100 Operator s Manual 4 m ...
