Rohde & Schwarz SGU100A, User Manual, Page: 120 / 236

Network and Remote Control Operation
R&S
®
SGU100A
118 User Manual 1176.7726.02 ─ 09
inst0 currently selects the VXI-11 protocol by default and can be omitted.
For details of the VXI-11 protocol, refer to . Chapter 10.1.2.3, "VXI-11 Protocol" ,
on page 119
Socket communication
TCPIP::host address::port::SOCKET
●
port determines the used port number
●
SOCKET indicates the raw network socket resource class
Socket communication requires the specification of the port (commonly referred to as
port number) and of "SOCKET" to complete the VISA resource string with the associ-
ated protocol used.
The registered port for socket communication is port 5025.
See also Chapter 10.1.2.4, "Socket Communication" , on page 119.
Example:
●
Instrument has the IP address 10.113.11.91 ; the valid resource string using VXI-11
protocol is:
TCPIP::10.113.11.91::INSTR
●
The DNS host name is rssgu100a100021 ; the valid resource string is:
TCPIP::rssgu100a100021::hislip0
(HiSLIP)
TCPIP::rssgu100a100021::inst0
(VXI-11)
●
A raw socket connection can be established using:
TCPIP::10.113.11.91::5025::SOCKET
10.1.2.2 HiSLIP Protocol
The HiSLIP ( Hi gh S peed L AN I nstrument P rotocol) is the successor protocol for
VXI-11 for TCP-based instruments specified by the IVI foundation. The protocol uses
two TCP sockets for a single connection - one for fast data transfer, the other for non-
sequential control commands (e.g.
Device Clear
or
SRQ
).
HiSLIP has the following characteristics:
●
High performance as with raw socket network connections
●
Compatible IEEE 488.2 support for Message Exchange Protocol, Device Clear,
Serial Poll, Remote/Local, Trigger, and Service Request
●
Uses a single IANA registered port (4880), which simplifies the configuration of fire-
walls
●
Supports simultaneous access of multiple users by providing versatile locking
mechanisms
●
Usable for IPv6 or IPv4 networks
Remote Control Interfaces and Protocols