JAI AM-800GE, Руководство пользователя

Страница: 51 / 111

AM-800GE / AB-800GE
- 48 -
9.2.4 TriggerActivation
This determines the behaviour of the trigger.
RisingEdge
：
Initiate at the signal rising edge
FallingEdge
：
Initiate at the signal falling edge
LevelHigh
：
Initiate during the signal high level
LevelLow
：
Initiate during the signal low level
Note: When TriggerWidth is used, TriggerActivation should be set at either LevelHigh
or LevelLow.
RisingEdge FallingEdge LevelHigh LevelLow
Timed
○ ○ × ×
TrigegrWidth
× × ○ ○
Timed-JAI PIV
○ ○ × ×
Timed-JAI Pre-Dump
○ ○ × ×
9.2.4.1 Initial Trigger Activation Set
The hardware used as TTL input through D-SUB 9 pin for GPIO, is designed as the
circuit to minimize the influence of noise. Therefore, the input polarity is set at
either Hi-Active or Low-Active and on every time if High or Low is selected, the input
polarity is automatically changed. However, just after the power is ON, it is not
possible to recognize the initial status on TTL signal, it is determined by the trigger
activation setting of function used TTL signal and initialized accordingly.
However, as there are several functions used TTL signal and each has own trigger
activation setting, the camera initializes according to its priority.
The initial Trigger Activation Set function forces to set the input polarity after the
power is ON and the user can always use the fixed setting regardless of its priority.
The following is the selection.
Hi-Active: At the first time if the power is ON, detect the
“
LOW to HIGH
”
of
the TTL input.
Low-Active: At the first time if the power is ON, detect the
“
HIGH to LOW
”
of
the TTL input.
Auto(Default): At the first time if the power is ON, use the trigger activation
setting of the first priority function.
The following table shows the priority of the trigger activation at AUTO setting.
Priority Function
1 Acquisition Start Trigger
2 Acquisition End Trigger
3 Frame Start Trigger
4 JAI Acquisition Transfer Start
5 Timer Trigger Source(Timer1)
6 Counter Trigger Source(Counter1)
7 Counter Event Source(Counter1)
8 Counter Reset Source(Counter1)