Measurement Computing Data Acquisition Systems rev.10.4 - Manual (Page 303)

Programmer’s Manual
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Daq API Command Reference 4.6-25
Parameter Type Definitions
triggerSource-(DaqAdcTriggerSource)
Definition Description
DatsImmediate
( Trigger event only)
Post-trigger data acquisition begins immediately upon invocation of the daqAdcArm function (no pre-trigger
data acquisition is possible with this trigger source)
DatsSoftware Post-trigger data acquisition begins upon a software command issued by the calling application (see
daqAdcSoftTrig
)
DatsAdcClock
Trigger event only)
Post-trigger data acquisition begins immediately upon invocation detection of the ADC Clock pulse being
driven.
DatsGatedAdcClock
Trigger event only)
Post-trigger data acquisition begins immediately upon invocation detection of the ADC Clock pulse being
driven.
DatsExternalTTL
(Trigger event only)
Post-trigger data acquisition begins on the selectable edge of an external TTL signal.
DatsHardwareAnalog
(Trigger event only)
Post-trigger data acquisition begins upon a selectable criteria of the input signal (above level, below level,
rising edge, etc.) Must be defined as the first channel in the channel scan group
DatsSoftwareAnalog Post-trigger data acquisition begins upon a selectable criteria of the input signal (above level, below level,
rising edge, etc.)
DatsDigPattern Post-trigger data acquisition beings upon receiving a specified digital pattern on a P2 or P3 digital port.
DatsPulse*
(Trigger event only)
Post-trigger data acquisition begins upon detection of a pulse of specified duration and magnitude on an analog
input channel.
DatsCounter (P3) Post-trigger data acquisition begins upon detection of specified counter criteria
DatsScanCount
(Stop event only)
Stop collecting post-trigger data when the specified number of post-trigger scans are completed
triggerSensitivity–(DaqEnhTrigSensT)
Definition Trigger Sources Description
DetsRisingEdge DatsExternalTTL
DatsHardwareAnalog
DatsSoftwareAnalog
DatsEnhancedTrig
Triggers when the signal goes from low to high (TTL trigger) or rises
through a specified level (Hardware & Software Analog)
DetsFallingEdge DatsExternalTTL
DatsHardwareAnalog
DatsSoftwareAnalog
DatsEnhancedTrig
Triggers when the signal goes from high to low (TTL trigger) or falls
through a specified level (Hardware & Software Analog)
DetsAboveLevel DatsExternalTTL
DatsHardwareAnalog
DatsSoftwareAnalog
DatsEnhancedTrig
Triggers when the signal is above a specified level (Hardware &
Software Analog and Digital Trigger)
DetsBelowLevel DatsExternalTTL
DatsHardwareAnalog
DatsSoftwareAnalog
DatsEnhancedTrig
Triggers when the signal is below a specified level (Hardware &
Software Analog and Digital Trigger)
DetsEQLevel DatsSoftwareAnalog
DatsEnhancedTrig
DatsDigPattern
Triggers when the signal equals a specified level (Hardware & Software
Analog and Digital Trigger)
DetsNELevel DatsSoftwareAnalog
DatsEnhancedTrig
DatsDigPattern
Triggers when the signal does not equal a specified level (Hardware &
Software Analog and Digital Trigger)
DetsWindow DatsPulse Triggers at a specified pulse width or height