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Hitachi SK-HD1500-S2 Operating Instructions Manual page 40

Hd color camera
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Electronic shutter setting
LOCK SCAN mode
The lock scan mode avoids flicker in scenes showing a computer monitor screen.
1. Set the Shutter switch to SEL to produce the lock scan mode.
2. Push MENU BUTTON, top menu screen is displayed.
The cursor can be changed by rotating MENU SEL KNOB.
Go to Shutter menu, sub menu of maintenance menu.
Move the cursor to SHUTTER VAR.
Adjust the rotating MENU SEL KNOB buttons.
■SHUTTER    :<   SCENE 0
 SHUTTER    :OFF
 SHUTTER PRE:1/250
 SHUTTER VAR:1/179.8
 INITIALIZE :
3. The image of a computer screen having a different scanning frequency includes a light or dark bar rolling up or
down through the image.
Adjust the rotating MENU SEL KNOB buttons to minimize the bar.
Light
Slow shutter speed
Note
Flicker reduction is ineffective at scanning frequency below 60 Hz.
Flicker-free image
Roll
29
Dark
Roll
Fast shutter speed

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