Remote control interfaces and protocols
R&S
®
NRP Series
48
Getting Started 1419.0170.02 ─ 18
6.2.1
VISA resource strings
The VISA resource string is required to establish a communication session
between the controller and the power sensor in a LAN. The resource string is a
unique identifier, composed of the specific IP address of the power sensor and
some network and VISA-specific keywords.
TCPIP::<IP address or hostname>[::<LAN device name>][::INSTR]
●
TCPIP
designates the network protocol used
●
<IP address or hostname>
is the IP address or host name of the device
●
[::<LAN device name>]
defines the protocol and the instance number of a sub-
instrument:
●
[::INSTR]
indicates the power sensor resource class (optional)
The IP address or hostname is used by the programs to identify and control the
power sensor. While the hostname is determined by settings in the power sensor,
the IP address is assigned by a DHCP server when the power sensor requests
one. Alternatively the IP address is determined with a procedure called Zeroconf.
You can also assign a
LAN device name
which defines the protocol characteris-
tics of the connection. See the description of the VISA resource string below for
the corresponding interface protocols. The string of the
LAN device name
is
emphasized in italics.
HiSLIP
TCPIP::<IP address or hostname>
::hislip0
[::INSTR]
●
hislip0
is the 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.
VXI-11
TCPIP::<IP address or hostname>
[::inst0]
[::INSTR]
●
inst0
is the LAN device name, indicating that the VXI-11 protocol is used
(optional)
inst0
currently selects the VXI-11 protocol by default and can be omitted.
Ethernet interface
