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Network operation and remote control R&S ® LCX Series 150 User Manual 1 179.2260.02 ─ 08 10.1 Overview of remote access modes This section outlines the possible access modes and their major characteristics. Remote co…

Network operation and remote control

R&S

LCX Series

149User Manual 1179.2260.02 ─ 08

10 Network operation and remote control

As an alternative to the interactive operation directly at the instrument, you can operate

the R&S LCX also from a remote control location, for example a controller PC.

The various interfaces provide flexible access to the instrument, such as remote con-

trol, remote operation or remote file access. These remote access modes are funda-

mentally different, although they are often considered interchangeable, as described in

Overview of remote access modes.

Figure 10-1 shows the possibilities of the physical connection (interfaces) for remote

access.

The following descriptions provide information required for operating the R&S LCX

remotely. The information applies to all applications and operating modes supported by

the instrument. Definitions specified in the SCPI standard are not provided.

For basic knowledge on remote control operation and additional information, see the

following documents available from the Rohde & Schwarz website:

●

Remote control via SCPI

●

1MA171: How to use Rohde & Schwarz Instruments in MATLAB

●

1SL374: How to communicate with R&S devices using VISA

Ethernet

VXI-11

Socket

GPIB

USBTMC

VNC

ftp

USB

LAN

CDC

R&S Instrument

Controller

Application

Program

Figure 10-1: Supported remote connections

● Overview of remote access modes.......................................................................150

● Remote control interfaces and protocols...............................................................151

● Remote access settings........................................................................................159

● Connecting the R&S LCX for remote access........................................................167

● Adjusting interface addresses...............................................................................169

● Operating the R&S LCX remotely......................................................................... 173

Network operation and remote control

R&S

LCX Series

150User Manual 1179.2260.02 ─ 08

10.1 Overview of remote access modes

This section outlines the possible access modes and their major characteristics.

Remote control (SCPI)

●

A remote PC controls the instrument, usually using VISA (Virtual Instrument Soft-

ware Architecture) interfaces.

●

Remote control disables the manual operation of the instrument; you can set differ-

ent lock states.

●

The GUI is not visible on the controller PC.

●

Remote control commands (SCPI) perform the settings, either individually or in

sequences (SCPI programs).

●

Using SCPI programs is faster than the manual operation, since they automate

repeating applications.

Remote operation (VNC)

●

A remote device accesses the instrument using the common platform technology

VNC (Virtual Network Computing).

●

The protocol allows simultaneous operation from several remote devices and the

instrument nevertheless remains locally operable.

●

The GUI is visible.

●

To perform the settings, you can operate the instrument as with the manual control.

●

During remote operation over VNC, the direct control of the instrument is not dis-

abled.

You can control the instrument from the front panel and over the remote computer

alternately.

●

Clients supporting remote operation depend on the used remote device, see

Table 10-1.

●

How to: see Section 10.6.1.2, "Accessing the R&S LCX over VNC", on page 175.

Table 10-1: Supported VNC operation modes

Remote device VNC client Requirements Characteristics

Desktop

(Windows, Linux,

Mac

OS)

●

Dedicated client software

Client Software must be installed. Fast, supports several options like

full-screen mode or auto-login.

●

Any web browser

Java Runtime must be installed

and activated in the browser set-

tings.

Fast and convenient - only the

instrument address required.

Java runtime is sometimes con-

sidered as security concern.

●

Web browser with HTML5

Web sockets must be supported. Slower than the other modes.

No additional installation or acti-

vation is required.

No security concern.

Overview of remote access modes

Network operation and remote control

R&S

LCX Series

151User Manual 1179.2260.02 ─ 08

Remote file access (FTP)

●

A remote client device accesses the instrument's file system over an Ethernet con-

nection, using FTP (file transfer protocol).

●

The protocol enables you to get direct access to the file directory of the R&S LCX

to transfer files from or to the instrument.

●

The access requires a dedicated FTP client on the host device. Usually, each oper-

ating system provides a basic build-in FTP client, but the functionality can vary and

be limited to upload and download operation. The accessible file types depend on

the contents of the instrument's file manager, see Section 9.1, "File and data man-

agement", on page 120.

●

For authentication, you require the instrument's user name and password.

How to: see Section 10.6.2, "Accessing the file system of the R&S LCX using FTP",

on page 177.

10.2 Remote control interfaces and protocols

The R&S LCX supports various interfaces for remote control. You need the connection

between both devices and an apllication on the controller PC that supports communi-

cation over the used interface. Table 10-2 gives an overview on the connectivity:

Table 10-2: Remote control interfaces and protocols

Interface

Protocols, VISA

address string and library

Remarks

Local area network

(LAN)

●

Address string

TCPIP::host address[::

LAN device name][::INSTR]

VISA

●

VXI-11

TCPIP::host address[::inst0][::INSTR]

VISA

●

Socket communication (Raw Ethernet, simple

Telnet)

TCPIP::host address[::

LAN device name]::<port>::SOCKET

VISA or socket controller

The LAN connector is at the rear panel of the

instrument.

The interface is based on TCP/IP, see Sec-

tion 10.2.1, "LAN interface", on page 152 for

details on the address information.

USB

●

USBTMC

USB::<vendor ID>::<product ID>::

<serial number>[::INSTR]

VISA

●

CDC

(communications device class, corresponds to

VCP (virtual COM port))

The USB B connector is at therear panel of the

instrument.

For a description of the interface, see Sec-

tion 10.2.2, "USB interface", on page 154

Remote control interfaces and protocols