Dataman 770 Series - Manual (Page 22)

Development kit for DATAMAN 770 series
Programmer’s Guide
Parametre:
channel – determines channel
CHANNEL_A – channel A
CHANNEL_B – channel B
onoff – determines whether the digital shielding will be turned on or off
ONOFF_OFF – turns the digital shielding off
ONOFF_ON – turns the digital shielding on
level – determines the digital shielding factor (valid values are: 2, 4, 8, 16, 32 and 64)
Return value: -
Remark:
In order to make the digital shielding work correctly, it is necessary to have a stable
and well triggered signal on the input. Digital shielding prolongs the oscilloscope
response to the signal change (the higher the factor the longer the response).
3.4. Data acqusition functions
3.4.1. StartMeasurement
Starts/restarts data acquisition.
procedure StartMeasurement;stdcall;external 'm770drvdk.dll';
Parameters: -
Return value: -
3.4.2. IsDataReady
Returns the data acquisition status.
function IsDataReady:integer;stdcall;external 'm770drvdk.dll';
Parameters: -
Return value:
Indicates data acquisition status. It is one of following constants:
DATA_NOT_TRIGGERED – valid trigger event hasn’t occured
DATA_TRIGGERED – the acquisition is triggered and is in progress
DATA_READY – the acquisition is finished, data are prepared to be
transferred to computer. This transfer can be done by GetData function.
DATA_ERROR – the communication with device is broken, it is not
possible to determine acquisition status
3.4.3. GetReconstructionPercentage
Returns ratio of the measured data to measured data + interpolated data.
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