Measurement Computing Personal Daq rev.6.0 - Manual (Page 150)

B-18 API Commands Appendix B, 887095 Personal Daq User’s Manual
daqAdcTransferStart
DLL Function daqAdcTransferStart(DaqHandleT handle);
C daqAdcTransferStart(DaqHandleT handle);
Visual BASIC VBdaqAdcTransferStart&(ByVal handle&)
Delphi daqAdcTransferStart( handle:DaqHandleT )
Parameters Handle Handle to the device to initiate an ADC transfer
Returns DerrNoError No error
See Also daqAdcTranferSetBuffer, daqAdcTransferGetStat, daqAdcTransferStop
Program References ADCEX1.C, FREQEX1.C, PULSEEX1.C, MULTEX1.C, DAQEX.FRM (VB), DAQEX.PAS (Delphi)
Used With All devices
Description
daqAdcTransferStart allows you to initiate an acquisition transfer. The transfer will be performed under the current active acquisition.
If no acquisition is currently active, the transfer will not initiate until an acquisition becomes active (via the daqAdcArm function). The
transfer will be characterized by the current settings for the transfer buffer. The transfer buffer can be configured via the
daqAdcSetTransferBuffer
function.
daqAdcTransferStop
DLL Function daqAdcTransferStop(DaqHandleT handle);
C daqAdcTransferStop(DaqHandleT handle);
Visual BASIC VBdaqAdcTransferStop&(ByVal handle&)
Delphi daqAdcTransferStop( handle:DaqHandleT )
Parameters handle Handle to the device for which the Adc data transfer is to be stopped
Returns DerrNoError No error
See Also daqAdcTransferSetBuffer, daqAdcTransferStart, daqAdcTransferGetStat
Program References None
Used With All devices
Description
daqAdcTransferStop allows you to stop a current buffer transfer, if one is active. The current transfer will be halted and no more data
will transfer into the transfer buffer. Though the transfer is stopped, the acquisition will remain active. Transfers can be re-initiated with
daqAdcStartTransfer
after the stop, as long as the current acquisition remains active. The acquisition can be halted by calling the
daqAdcDisarm function.
daqClose
DLL Function daqClose(DaqHandleT handle);
C daqClose(DaqHandleT handle);
Visual BASIC VBdaqClose&(ByVal handle&)
Delphi daqClose(handle:DaqHandleT)
Parameters handle Handle to the device to be closed
Returns DerrNoError No error
See Also daqOpen
Program References ADCEX1.C, FREQEX1.C, PULSEEX1.C, MULTEX1.C, DIGEX1.C, INITEX1.C, DAQEX.FRM (VB),
DAQEX.PAS (Delphi)
Used With All devices
Description
daqClose is used to close a Personal Daq device. Once the specified device has been closed, no subsequent communication with the
device can be performed. In order to re-establish communications with a closed device, the device must be re-opened with the daqOpen
function.