JAA80151-R.3718.A
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A 4・AF-S 4-24/2.8G
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(4) Inspection screen of lens driving time
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Make inspections by focal length 14mm (W) or 24m (T)
at the following five lens positions.
●
Oscilloscope setting
V/Div
�
5V
Coupling
�
DC
Time/Div
�
20m Sec
Trigger Mode
�
SGL (S)
Trigger Coupling
�
DC
Trigger Source
�
CH1
(Lens position in inspecting)
Horizontal lens position
Index
90° angle rightward (from horizontal position)
Index
90° angle leftward ( ditto )
Front lens group 90° angle upward ( ditto )
Front lens group 90° angle downward ( ditto )
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Select the driving amount respectively. Each lens driving time must be within the standard.
Caution:
If the MF ring is rotated during inspections, the waveform shows an abnormal value.
Do NOT touch the MF ring during inspections.
E terminal
H terminal
Driving time
※
There are two types in shape of waveforms of E and H terminals:
Waveform (1) starts and goes up (2) starts and goes down.
INC