Technical data

42 Agilent Connectivity Guide
2 Installing Agilent I/O Libraries Suite
• agvisa32.dll is installed, but Agilent's visa32.dll is not. Thus, it
will not overwrite another vendor's visa32.dll residing in the
standard location.
• Agilent support files are not installed in the bin, include and lib
directories of the VISA path (e.g. c:\program files\visa\winnt),
since they would overwrite the other vendor's support files.
Copies of the Agilent versions of the VISA support files reside in
the agbin, include and lib subdirectories under <VISA path>\
agvisa. (These files are installed even when Agilent VISA is
primary.)
• The IO Control menu and the status bar at the bottom of the
Connection Expert window will contain a message indicating
whether Agilent VISA is installed as primary, installed as
secondary, or installed as primary but overwritten by another
vendor's VISA. In the latter case, Agilent VISA will operate
identically to a secondary installation.
VISA programs that are linked to the standard VISA DLL (e.g. C:\
WINDOWS\system32\visa32.dll) will use the primary VISA.
However, if a VISA program is linked with agvisa32.lib or
dynamically loads agvisa32.dll, it will always use Agilent VISA
(regardless of whether Agilent VISA is primary or secondary).
Addressing is identical regardless of whether you are using the primary
or secondary VISA in your program.
See the Agilent IO Libraries Suite Online Help for more information
about side-by-side VISA operation.