Remote Control Basics
R&S
®
NRX
415
User Manual 1178.5566.02 ─ 05
Setup
► Connect the host interface of the R&S NRX and the USB interface of the computer.
USBTMC protocol
USBTMC is a protocol that is built on top of USB for communication with USB devices
from the test
& measurement category. It defines a dedicated class code that identifies
a device's functionality. R&S NRX also uses this class code to identify itself as a mem-
ber of the test
& measurement class. Using a VISA library, such devices support ser-
vice request, trigger and other operations that are commonly found in GPIB devices.
USB resource string
The VISA resource string for USBTMC device communication represents an address-
ing scheme that is used to establish a communication session with the sensor. It is
based on the sensor address and some instrument- and vendor-specific information.
The syntax of the used USB resource string is:
USB::<vendor ID>::<product ID>::<serial number>[::INSTR]
●
<vendor ID>
is the vendor ID for Rohde & Schwarz.
●
<product ID>
is the product ID for the R&S NRX.
●
<serial number>
is the individual serial number of the R&S NRX, printed on the
casing.
Example:
USB::0x0AAD::0x015B::100001
0x0AAD is the vendor ID for Rohde & Schwarz.
0x015B is the product ID for the R&S NRX.
100001 is the serial number of the particular R&S NRX.
15.1.2
Ethernet Interface
The Ethernet interface of the R&S NRX allows you to integrate it in a local area net-
work (LAN).
Requirements
●
TCP/IP network protocol
The local area network must support the TCP/IP network protocol.
The TCP/IP network protocol and the associated network services are preconfig-
ured on the R&S NRX.
●
VISA library
Installed on the computer.
●
Software for device control
Installed on the computer.
Remote Control Interfaces and Protocols