Antiglitch / Antichattering - Toshiba BU505MCG Instruction Manual

Cmos camera
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AntiGlitch / AntiChattering

AntiGlitch and AntiChattering functions filter noise and unstable state of the digital input (trigger signal).
AntiGlitch circuit performs the digital integration of the trigger signal.
It is effective to remove impulsive noise.
AntiChattering circuit sets the edge insensible time to avoid trigger malfunction.
It is effective to remove unstable logic state and switch-chattering.
Trigger Signal
(Original)
Trigger Signal
(Skewed)
Digital Input
Integration of
Digital Input
AntiGlitch Circuit
Output
AntiChattering Circuit
Output
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High
Low
High
Low
noise
high slew rate
High
Low
Glitch
High threshold
Low threshold
AntiGlitch
Value
Delay
High
Valid
Edge
Low
AntiChattering
Insensible
Value
Time
High
Valid
Signal
Low
Fig. AntiGlitch and AntiChattering
Chattering
Valid
Valid
Edge
Edge
81 / 92
low slew rate
Valid
Edge
Invalid
Edge
Insensible
Time
Valid
Signal
D4253386C
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