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M2i.30xx / M2i.30xx-exp Manual
Trigger
Mode Gated Sampling
Channel trigger LOW level
The analog input is continuously sampled with the selected
sample rate. If the signal is equal or lower than the pro-
grammed trigger level the gate starts.
When the signal is higher than the programmed trigger lev-
el the gate will stop.
As this mode is level-triggered, the high level at the cards
start time does trigger the board.
Channel re-arm trigger on positive edge
The analog input is continuously sampled with the selected
sample rate. If the programmed re-arm level is crossed from
lower to higher values, the trigger engine is armed and
waiting for trigger.
If the programmed trigger level is crossed by the channel’s
signal from lower values to higher values (rising edge) then
the gate starts and the trigger engine will be disarmed.
If the programmed trigger level is crossed by the channel’s
signal from higher values to lower values (falling edge) the
gate stops.
A new trigger event is only detected, if the trigger engine is armed again. The re-arm trigger modes can be used to prevent the board from
triggering on wrong edges in noisy signals.
Channel re-arm trigger on negative edge
The analog input is continuously sampled with the selected
sample rate. If the programmed re-arm level is crossed from
higher to lower values, the trigger engine is armed and
waiting for trigger.
If the programmed trigger level is crossed by the channel’s
signal from higher values to lower values (falling edge) then
the gate starts and the trigger engine will be disarmed.
If the programmed trigger level is crossed by the channel’s
signal from lower values to higher values (rising edge) the
gate stops.
A new trigger event is only detected, if the trigger engine is armed again. The re-arm trigger modes can be used to prevent the board from
triggering on wrong edges in noisy signals.
Register
Value
Direction
set to
Value
SPC_TRIG_CH0_MODE
40610
read/write
SPC_TM_LOW
10h
SPC_TRIG_CH0_LEVEL0
42200
read/write
Set it to the desired trigger level relatively to the channel’s input range.
board dependant
Register
Value
Direction
set to
Value
SPC_TRIG_CH0_MODE
40610
read/write
SPC_TM_POS | SPC_TM_REARM
01000001h
SPC_TRIG_CH0_LEVEL0
42200
read/write
Set it to the desired trigger level relatively to the channel’s input range.
board dependant
SPC_TRIG_CH0_LEVEL1
42300
read/write
Defines the re-arm level relatively to the channels’s input range
board dependant
Register
Value
Direction
set to
Value
SPC_TRIG_CH0_MODE
40610
read/write
SPC_TM_NEG | SPC_TM_REARM
01000002h
SPC_TRIG_CH0_LEVEL0
42200
read/write
Defines the re-arm level relatively to the channels’s input range
board dependant
SPC_TRIG_CH0_LEVEL1
42300
read/write
Defines the re-arm level relatively to the channels’s input range
board dependant
