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PyVISA Documentation, Release 1.6
3.6.2 Resource Manager
class pyvisa.highlevel.ResourceInfo(interface_type, interface_board_number, resource_class, resource_name, alias)
Resource extended information
Named tuple with information about a resource. Returned by some ResourceManager methods.
Interface_type Interface
type
of
pyvisa.constants.InterfaceType
the
given
resource
string.
Interface_board_number Board number of the interface of the given resource string.
Resource_class Specifies the resource class (for example, “INSTR”) of the given resource string.
Resource_name This is the expanded version of the given resource string. The format should be
similar to the VISA-defined canonical resource name.
Alias Specifies the user-defined alias for the given resource string.
class pyvisa.highlevel.ResourceManager
VISA Resource Manager
Parameters visa_library – VisaLibrary Instance, path of the VISA library or VisaLibrary spec
string. (if not given, the default for the platform will be used).
close()
Close the resource manager session.
last_status
Last status code returned for an operation with this Resource Manager
Return type pyvisa.constants.StatusCode
list_resources(query=u’?*::INSTR’)
Returns a tuple of all connected devices matching query.
Parameters query – regular expression used to match devices.
list_resources_info(query=u’?*::INSTR’)
Returns a dictionary mapping resource names to resource extended information of all connected devices
matching query.
Parameters query – regular expression used to match devices.
Returns Mapping of resource name to ResourceInfo
Return type dict[str, pyvisa.highlevel.ResourceInfo]
open_bare_resource(resource_name,
access_mode=<AccessModes.no_lock:
open_timeout=0)
Open the specified resource without wrapping into a class
0>,
Parameters
• resource_name – name or alias of the resource to open.
• access_mode (pyvisa.constants.AccessModes) – access mode.
• open_timeout – time out to open.
Returns Unique logical identifier reference to a session.
open_resource(resource_name, access_mode=<AccessModes.no_lock:
**kwargs)
Return an instrument for the resource name.
3.6. API
0>, open_timeout=0,
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