Network operation and remote control
R&S
®
AREG800A
181
User Manual 1179.3615.02 ─ 01
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 resource string.
Basically, instruments from Rohde
&
Schwarz use port number 5025 for socket com-
munication.
Example:
TCPIP::192.1.2.3::5025::SOCKET
10.2.2
USB interface
For remote control using USB, the controller PC and the instrument must be connected
over the USB type
B interface. Software for instrument control and the VISA program
library must be installed on the controller.
The serial interface "RS232" enables you to connect the instrument over serial inter-
face. You can connect to the interface by using the external USB/serial-adapter
R&S
TS1-USB (see recommended extras in the data sheet) and a serial crossover
(null modem) cable.
VISA detects and configures the Rohde
&
Schwarz instrument automatically when the
USB connection is established. You do not have to install a separate driver.
USBTMC (USB Test & Measurement Class Specification) is a protocol that is built on
top of USB for communication with USB devices. It defines class code information of
the instrument, that identifies its functionality to load the respective device driver. Using
VISA library, the protocol supports service request, trigger, and other specific opera-
tions.
10.2.2.1
USB resource string
The resource string represents an addressing scheme that is used to establish a com-
munication session with the instrument. It is based on the instrument address and
some instrument- and vendor-specific information.
The USB resource string syntax is as follows:
USB::<vendor ID>::<product ID>::<serial number>[::INSTR]
USB
= denotes the used interface
<vendor ID>
= is the manufacturer ID for Rohde
&
Schwarz
<product ID>
= is the product identification of the instrument
<serial number> = is the individual serial number at the rear of the instrument
[::INSTR]
= indicates the instrument resource class (optional)
To set the USB resource string, see
.
Remote control interfaces and protocols
