R&S LCX Series, User Manual

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Network operation and remote control
R&S
®
LCX Series
145 User Manual 1179.2260.02 ─ 02
For control, you can use the SCPI terminal function of the R&S HMExplorer soft-
ware. This software also provides logging of measurement values, or graphical dis-
play.
●
CDC
(Communications Device Class, also known as VCP Virtual COM Port) is a proto-
col used for emulating serial ports over USB. Using the CDC protocol, you have to
install the USB VCP driver corresponding to the Windows operating system of the
controller PC, available for download on the Rohde
& Schwarz product site at
www.rohde-schwarz.com/driver/lcx/ .
To select the USB interface, see "Selecting the USB communication class protocol"
on page 162-
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 select the USB communication protocol, see "Selecting the USB communication
class protocol" on page 162.
Example:
USB::0x0AAD::0x01DD::100001
0x0AAD is the vendor ID for Rohde & Schwarz.
0x01DD is the product ID for the R&S LCX
100001 is the serial number of the particular instrument.
10.2.3 GPIB interface (IEC/IEEE bus interface)
Option: R&S NG-B105 GPIB (IEC 625/IEE 488) bus interface
The R&S LCX is optionally available with an integrated GPIB interface. The GPIB inter-
face is at the rear panel .
To control the R&S LCX over the GPIB bus, the instrument and the controller must be
connected with a GPIB bus cable. A GPIB bus card, the card drivers and the program
libraries for the programming language used must be provided in the controller.
For description of the characteristics, control commands and messages of the GPIB
interface, refer to
Remote control via SCPI .
Remote control interfaces and protocols