Installation guide

84 Chapter 4
Configuring I/O Interfaces
Configuring VXI Interfaces
Example:
Configuring VXI
(E8491B) Interfaces
The VXI interface system in the following figure consists of a Windows PC
with an E8491 PC card that connects to an E8491B IEEE-1394 to VXI
Module in a VXI Mainframe. The VXI mainframe includes one or more VXI
instruments. For this system, the three VXI instruments shown have logical
addresses 8, 16, and 24.
The IO Config utility has been used to assign the E8491 PC card a VISA
name of “VXI0” and SICL name of “vxi”. With these names assigned to the
interface, you can use the VISA/SICL addressing shown in the figure.
For information on the E8491B module, see the Agilent E8491B User’s
Guide. For information on VXI instruments, see the applicable VXI
Instrument User’s Guide. See the Agilent VISA User’s Guide for details on
VISA commands. See the Agilent SICL User’s Guide for Windows for details
on SICL commands.
E8491 PC Card
Windows PC
. . .
Interface VISA/SICL Name
VISA Name SICL Name
"VXI0" "vxi"
VISA/SICL Addressing
VISA: viOpen (... "VXI0::24::INSTR"...)
SICL: iopen ("vxi,24")
VXI Interface (E18491B IEEE-1394 to VXI Module)
Open IO path to VXI instrument at logical address 24 using
E8491 PC Card and E8491 IEEE-1394 to VXI Module
Open IO path to VXI instrument at logical address 24 using
E8491 PC Card and E8491 IEEE-1394 to VXI Module
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VXI Mainframe
IEEE-1394 to VXI
LA 8 LA 24 LA 16