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M2i.60xx / M2i.60xx-exp Manual
Allowed trigger modes
Mode Gated Replay
Positive TTL single edge trigger
This mode is for detecting the rising edges of an external TTL sig-
nal. The gate will start on rising edges that are detected after start-
ing the board.
As this mode is purely edge-triggered, the high level at the cards
start time, does not trigger the board.
With the next falling edge the gate will be stopped.
HIGH TTL level trigger
This mode is for detecting the high levels of an external TTL signal.
The gate will start on high levels that are detected after starting
the board acquisition/generation.
As this mode is purely level-triggered, the high level at the cards
start time, does trigger the board.
With the next low level the gate will be stopped.
Positive TTL double edge trigger
This mode is for detecting the rising edges of an external TTL sig-
nal. The gate will start on the first rising edge that is detected after
starting the board.
As this mode is purely edge-triggered, the high level at the cards
start time, does not trigger the board.
The gate will stop on the second rising edge that is detected.
Register
Value
Direction
Description
SPC_TRIG_EXT0_MODE
40510
read/write
Sets the external trigger mode for the board
SPC_TM_POS
1h
Sets the trigger mode for external TTL trigger to detect positive edges
Register
Value
Direction
Description
SPC_TRIG_EXT0_MODE
40510
read/write
Sets the external trigger mode for the board
SPC_TM_HIGH
8h
Sets the trigger mode for external TTL trigger to detect high levels.
Register
Value
Direction
Description
SPC_TRIG_EXT0_MODE
40510
read/write
Sets the external trigger mode for the board
SPC_TM_POS |
SPC_TM_DOUBLEEDGE
08000001h
Sets the gate mode for external TTL trigger to start and stop on positive edges.