The Virtual Instrument Software Architecture provides a generic interface for communication with test and
measurement equipment.
ResourceNames
Each device is identified by a resource name that specifies the type of connection used, location
information and the device type.
USBDevicesUSB[bus]::manufacturer::product::serial[::type]
The manufacturer and product identifiers must be given as hexadecimal numbers prefixed with 0x.
The serial number is mandatory, even if the device would be unique otherwise.
Ethernet/VXI-11DevicesTCPIP[interface]::host[::type]
ResourceManager
Access to resources is mediated through a resource manager; while technically there could be multiple
instances, usually only the default resource manager is used.
A handle to the default resource manager can be obtained from the viOpenDefaultRM(3visa) function.
FindingDevices
If the resource name is not known in advance, the resource manager can be queried for a list of known
devices by using the viFindRsrc(3visa) function.
This function returns a ViFindList object (along with the first known resource), and further resource
names are then queried from the find list using viFindNext(3visa) before finally freeing the list using
viClose(3visa).
LibreVISA 29 January 2013 visa(7visa)