Dataman 770 Series - Manual (Page 16)

Development kit for DATAMAN 770 series
Programmer’s Guide
Return value:
ERROR_OK – device was initialized successfully
ERROR_UNABLE_TO_LOAD_EM77X – unable to load em77x driver
ERROR_INIT_FAILED – device initialization failed (one of the reason can be,
that the device isn’t connected)
ERROR_FPGA_CONFIG_FAILED – FPGA initialization failed
ERROR_DK_NOT_ENABLED – the DK isn’t enabled in the connected device
ERROR_DRIVER_NOT_LOADED – the driver m770drv.dll wasn’t loaded
before this call (use LoadDriver function to load it)
3.2.5. UseDevice
Selects the device, which will be affected by calls of other functions (such as
SetTimeBase, SetRange ...). This function is used when several 770 oscilloscopes are
connected.
void __stdcall __export UseDevice(int index);
Parameters:
index – indicates device index from the list (obtained by GetDeviceList function)
Return value: -
3.3. Functions, that set the data acquisition parameters
3.3.1. SetTimeBase
Sets selected timebase.
void __stdcall __export SetTimeBase(unsigned int ns);
Parameters:
ns – amount of nanoseconds per one division (50 samples)
Return value: -
Remark:
The list of available timebases can be obtained by GetTimeBaseList function.
3.3.2. SetRange
Sets selected range to the selected channel.
int __stdcall __export SetRange(int channel, int mV);
Parameters:
channel – determines channel
CHANNEL_A – channel A
CHANNEL_B – channel B
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