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About VISAPassthrough

Find Method

Description

Returns a list of either VISA address strings or VISA address aliases.

VB Syntax

value = Vpassthru.Find (regex, findmode)

Variable

(Type) - Description

value

(Variant) - Variable to store the list of addresses or aliases.

Vpassthru

(object) -  A VISAPassthrough object

regex

(String) VISA regular expressions are expressions defined by the user to find devices that have been set up on the VISA interface. The following are examples of VISA regular expressions:

Interface Expression
GPIB GPIB[0-9]*::?*INSTR
PXI PXI?*INSTR
VXI VXI?*INSTR
GPIB-VXI GPIB-VXI?*INSTR
GPIB and GPIB-VXI GPIB?*INSTR
All VXI ?*VXI[0-9]*::?*INSTR
ASRL ASRL[0-9]*::?*INSTR
All ?*INSTR  or  ?*

Note that using "INSTR" in the VISA regular expression finds "instruments." To search all interfaces, use "?*".

findmode

(enum as NAVISAFindMode) - Find mode determines the type of return values. Choose from:

0 - naAddresses: return VISA address names

1 - naAliases: return VISA address aliases

Note: The list of aliases may have less‒or more‒entries than the list of addresses because not all addresses will have aliases, and one address can have more than one alias.

Return Type

Variant

Default

Address

Examples

value=Vpassthru.Find("?*",1) 'Finds list of aliases

C++ Syntax

HRESULT Find(string reg_expression, enum NAVISAFindMode)

Interface

IVISAPassthrough