User`s guide

Programming via LAN 5
Agilent VISA User’s Guide 119
As shown in the following figure, a remote I/O client (a Windows PC)
makes VISA requests over the network to a remote I/O server (such as a
Windows PC, an E5810 LAN/GPIB Gateway, or a Series 700 HP-UX
workstation).
Gateway Operation
The remote I/O server is connected to the instrumentation or devices to
be controlled. Once the remote I/O server has completed the requested
operation on the instrument or device, the remote I/O server sends a
reply to the client. This reply contains the requested data and status
information that indicates whether or not the operation was successful.
The remote I/O server acts as a gateway between the LAN software that
the client system supports and the instrument-specific interface that the
device supports.