User`s guide

98 Agilent VISA User’s Guide
4 Programming via GPIB and VXI
VXI Interfaces Overview
As shown in the following figure, a typical VXI (E8491)
interface consists of an E8491 PC Card in a Windows PC
that is connected to an E8491B IEEE- 1394 Module in a VXI
mainframe via an IEEE- 1394 to VXI cable. The VXI
mainframe also includes one or more VXI instruments.
Example: 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. For
this system, the three VXI instruments shown have logical
addresses 8, 16, and 24. The Connection Expert utility has
been used to assign the E8491 PC card a VISA name of VXI0.
VISA addressing is as 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.
Windows PC
VXI (E8491) Interfaces
VXI Mainframe
. . .
E
8
4
9
1
B
V
X
I
I
n
s
t
r
V
X
I
I
n
s
t
r
V
X
I
I
n
s
t
r
. .
E8491 PC Card
IEEE-1394
to VXI