NAC Image Technology MEMRECAM GO-4K User Manual page 145

Functional Changes to Trigger and EST Filters
GO had adopted a new method for the trigger and EST filter that was different from the con-
ventional method. However, considering operation with cameras and external devices other
than GO, compatibility with the conventional method was considered important, so the conven-
tional method was changed.
GO-4K is now based on the conventional method.
<Status of firmware support>
Up to firmware Ver. 0.8.0: New method
From firmware Ver. 0.8.3: Conventional method
Switching function will be implemented by future firmware upgrade.
<Differences by method>
[New method]
Detects input signal changes (L to H, H to L) and immediately generates a signal.
After signal generation, the state of the input signal is ignored for the specified filter value.
[Conventional method]
The state (L or H) of the input signal is detected, and the internal counter is raised or lowered
according to the state, and a signal is generated when the specified filter value is met.
Example: In case of negative polarity (L is valid) L: Raise counter, H: Lower counter
[New method]
Detects input signal changes (L to H, H to L) and generates signals immediately.
After signal generation, the input signal status is ignored for the specified filter value.
Filter value
Ignore during this time
H
Input signal
L
Detect H to L
H
Generated
Signal
L
(00519)
Detect post-fil-
ter status
145
Filter value
Ignore during this time
Detect L to H
Connector