Rohde & Schwarz SGU100A, User Manual, Page: 119 / 236

Network and Remote Control Operation
R&S
®
SGU100A
117 User Manual 1176.7726.02 ─ 09
ment. Software for instrument control and (for specified protocols only) the VISA pro-
gram library must be installed on the controller.
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.
10.1.2.1 VISA Resource Strings
The VISA resource string is required to establish a communication session between
the controller and the instrument in a LAN. The resource string is a unique identifier,
composed of the specific IP address of the instrument and some network and VISA-
specific keywords.
TCPIP::host address[::LAN device name][::INSTR]
●
TCPIP designates the network protocol used
●
host address is the IP address or host name of the device
See also Chapter 6.4.3, "Finding Out the Default Hostname of the Instrument" ,
on page 64.
●
[::LAN device name] defines the protocol and the instance number of a subinstru-
ment:
●
[::INSTR] indicates the instrument resource class (optional)
The IP address (host address/computer name) is used by the programs to identify and
control the instrument. It is automatically assigned by the DHCP server the first time
the device is registered on the network. Alternatively, you can also assign its
LAN
device name .
You can find the IP address in the "SGMA-GUI > Instrument Name > Setup > Remote"
dialog, and also adjust it manually, if necessary.
See below the characteristics of the VISA resource strings for the corresponding inter-
face protocols. The highlighted characters are crucial.
HiSLIP
TCPIP::host address::hislip0[::INSTR]
●
hislip0 HiSLIP device name, designates that the interface protocol HiSLIP is used
(mandatory).
hislip0 is composed of [::HiSLIP device name[,HiSLIP port]] and must be assigned.
For details of the HiSLIP protocol, refer to Chapter 10.1.2.2, "HiSLIP Protocol" ,
on page 118.
VXI-11
TCPIP::host address[::inst0][::INSTR]
●
[::inst0] LAN device name, indicates that the VXI-11 protocol is used (optional).
Remote Control Interfaces and Protocols