User manual
2.3.3  Acqrs_close 
Purpose 
Closes an instrument. 
Parameters 
Input 
Name Type  Description 
instrumentID ViSession  Instrument identifier 
Return Value 
Name Type  Description 
status ViStatus Refer to Table 2-1 for error codes. 
Discussion 
Close the specified instrument. Once closed, this instrument is not available anymore and needs to be 
reenabled using 'InitWithOptions' or 'init'. 10-bit-FAMILY digitizers will have their power consumption 
lowered. Appropriate warm-up time may be needed when they are used again. 
For freeing properly all resources, 'closeAll' must still be called when the application closes, even if 'close' 
was called for each instrument.
LabWindowsCVI/Visual C++ Representation 
ViStatus status = Acqrs_close(ViSession instrumentID); 
LabVIEW Representation 
Acqiris Bx.lvlib: (or Aq Bx) Close.vi 
Visual Basic .NET Representation 
Acqrs_close (ByVal instrumentID As Int32) As Int32 
MATLAB MEX Representation 
[status]= Aq_close(instrumentID) 
Programmer’s Reference Manual    Page 17 of 210 










