Operator`s manual

93 Signametrics
DMMGetNumDevices
SMU2060  SMU2064 
Description Get the number of USB DMM devices connected to the USB structure.
#include "SMU2060.h"
int DMMGetNumDevices(int * nDevices)
Remarks This function retrieves the number of USB DMM devices connected to the USB bus. The
number of devices is saved at a location pointed to by nDevices. This function must be
used prior to opening the DMM. That is, prior to initialized or opening it by DMMInit()
or DMMOpenUSB(). See also DMMGetDevLocation().
Parameter
Type/Description
nDevices
* int Points to a location at which the number of devices is saved.
Return Value Integer string length if successful, or an error code.
Value
Meaning
Negative Value
Error code
Positive Value < 100
The length of the returned string
Postive Value ≥ 100
Warning code
Example int I; int number;
I = DMMGetNumDevices(& number);
DMMGetRange
SMU2060  SMU2064 
Description Get DMM range code.
#include "SMU2060.h"
#include "USBDMMUser.h"
int DMMGetRange(int nDmm)
Remarks This function returns the DMM range code. The range codes are in the sequence of 0, 1,
2, 3, … where 0 is the lowest range.
Parameter
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting
with zero.
Return Value Integer value corresponding to the currently set DMM range, or an error code.
Value
Meaning