Network and Remote Operation
R&S
®
FSPN
245
User Manual 1179.4363.02 ─ 01
IP address
Only the IP address or a valid DNS host name is required to set up the connection.
The host address is part of the "VISA resource string" used by the programs to identify
and control the instrument.
The VISA resource string has the form:
TCPIP::host address[::LAN device name][::INSTR]
or
TCPIP::host address::port::SOCKET
where:
●
TCPIP
designates the network protocol used
●
host address
is the IP address or host name of the device
●
LAN device name
defines the protocol and the instance number of a subinstru-
ment;
–
inst0
selects the VXI-11 protocol (default)
–
hislip0
selects the newer HiSLIP protocol
●
INSTR
indicates the instrument resource class (optional)
●
port
determines the used port number
●
SOCKET
indicates the raw network socket resource class
Example:
●
Instrument has the IP address
192.1.2.3
; the valid resource string using VXI-11
protocol is:
TCPIP::192.1.2.3::INSTR
●
The DNS host name is
FSPN26-123456
; the valid resource string using HiSLIP is:
TCPIP::FSPN26-123456::hislip0
●
A raw socket connection can be established using:
TCPIP::192.1.2.3::5025::SOCKET
Identifying instruments in a network
If several instruments are connected to the network, each instrument has its own IP
address and associated resource string. The controller identifies these instruments by
the resource string.
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VXI-11 Protocol
The VXI-11 standard is based on the ONC RPC (Open Network Computing Remote
Procedure Call) protocol which in turn relies on TCP/IP as the network/transport layer.
The TCP/IP network protocol and the associated network services are preconfigured.
Remote Control Basics
