ICP DAS USA PCI-1202 Series, Hardware User Manual

Page: 52 / 103

The B13 must set to 1 to set the external trigger logic. The external trigger controller
commands are given as follows:
Trigger Command sequences
[B12, B11, B10 ]
Descriptions
Disable external trigger
(for PCI-1800/1X02) [ 1, 0, X] Disable all external trigger.
Post-trigger
(for PCI-1202/1602/
1800/1802)
[ 1, 0, X]
[ 1, 0, X ]
[ 1, 1, 1 ]
[ 1, 0, X]
(1)
disable all external trigger
(2)
set pacer time-1
(3)
clear FIFO and disable timer-1
(4)
waiting for external signal to enable timer-1
(5)
fetch N data
(6)
stop all timer & disable all external trigger
Pre-trigger
(for PCI-1202/1602 &
PCI-1800/1802/ver-F)
[ 1, 0, X ]
[ 0, 1, X ]
[ 1, 1, 0 ]
[ 1, 0, X]
(1)
disable all external trigger
(2)
set pacer timer-1
(3)
clear FIFO and enable timer-1
(4)
waiting for the external signal to stop timer-1.
(5)
circular-fetch the last N data
(6)
stop all timer & disable all trigger
Middle-trigger
(for PCI-1202/1602 &
PCI-1800/1802/ver-F)
[ 1, 0, X ]
[ 0, 1, X ]
[ 1, 1, 1]
[ 1, 0, X]
(1)
disable all external trigger
(2)
set pacer timer-1
(3)
clear FIFO and enable timer-1
(4)
waiting for the external signal.
(5)
fetch more N2 data (circular-fetch)
(6)
stop all timer & disable all trigger
Pre-trigger
(for PCI-1800/1802)
(version-C)
[ 1, 0, X ]
[ 0, 1, X ]
[ 1, 1, 1]
[ 1, 0, X]
(1)
disable all external trigger
(2)
set pacer timer-1
(3)
clear FIFO and enable timer-1
(4)
waiting for the external signal to stop timer-1.
(5)
keep the last N data (circular-fetch)
(6)
stop all timer & disable all trigger
Middle-trigger
(for PCI-1800/1802)
(version-C)
[ 1, 0, X ]
[ 0, 1, X ]
[ 1, 1, 0]
[ 0, 1, X]
[ 1, 0, X]
(1)
disable all external trigger
(2)
set pacer timer-1
(3)
clear FIFO and enable timer-1
(4)
waiting for the external signal to stop timer-1
(5)
enable timer-1
(6)
fetch more N2 data
(7)
stop all timer & disable all trigger
PCI-1202/1602/1800/1802 Hardware User’s Manual
(
Ver.4.2, Dec/2009, PMH-014-42)---- 52