Dataman 520 Series - Manual (Page 13)

Development kit for DATAMAN 520 series
Programmer’s Guide
typedef _export _stdcall int (*fSetTriggerMode) (int TriggerMode);
TSetTriggerMode = function (TriggerMode: Integer): Integer; stdcall;
Public Declare Function SetTriggerMode Lib "VBDevKit52X.dll" (ByVal
TriggerMode As Long) As Long
Parameters:
TriggerMode – Valid values are following constants :
TRIGGER_MODE_NORMAL – Data acquisition starts on occurrence
of valid trigger event after the Data function call and
TRIGGER_MODE_AUTO – If valid trigger event does not occur, data
acquisition starts immediately, otherwise on the trigger event
TRIGGER_MODE_MANUAL – Data acquisition starts immediately
after the Data function call
Return Value:
ERROR_OK – Function call successfuly completed
ERROR_DEVELOPMENT_KIT_NOT_ENABLED – DK can not be used with
connected device (DK was not purchased)
ERROR_USB_COMMUNICATION_FAILED
– USB communication failed
Note:
Other trigger system settings are ignored, if the
TRIGGER_MODE_MANUAL mode is set.
SetAfterTriggerSamplesCount
Sets desired samples count after trigger event.
Declaration:
typedef _export _stdcall int (*fSetAfterTriggerSamplesCount)(int
InputValue);
TSetAfterTriggerSamplesCount = function (InputValue: Integer): Integer;
stdcall;
Public Declare Function SetAfterTriggerSamplesCount Lib
"VBDevKit52X.dll" (ByVal InputValue As Long) As Long
Parameters:
InputValue – Desired samples count. Valid range is <0, 63457>
Return Value:
ERROR_OK – Function call successfuly completed
ERROR_DEVELOPMENT_KIT_NOT_ENABLED – DK can not be used with
connected device (DK was not purchased)
ERROR_USB_COMMUNICATION_FAILED
– USB communication failed
Note:
Use actual sampling frequency to calculate after trigger acquisition length.
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