Rohde & Schwarz R&S RSC User Manual
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Rohde & Schwarz R&S RSC User Manual

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RSC
Step Attenuator
User Manual
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1313891002
Version 05

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Summary of Contents for Rohde & Schwarz R&S RSC

  • Page 1 ® R&S Step Attenuator User Manual (==ç:2) 1313891002 Version 05...
  • Page 2 ® This manual describes the R&S RSC and its instrument variants: ● R&S ® RSC base unit without attenuator 1313.8004.02 ● R&S ® RSC attenuator up to 6 GHz from 0 dB to 139 dB in 1 dB steps 1313.8004.03/13 ●...

  • Page 3: Table Of Contents

    ® Contents R&S Contents 1 Documentation overview............5 2 Introduction................7 3 Putting the instrument into operation......... 9 3.1 Explanation of the front and rear views..........9 3.2 Preparing the instrument..............12 3.3 Function check..................17 3.4 Default settings................... 18 3.5 Linux operating system..............18 3.6 Connecting external devices.............
  • Page 4 ® Contents R&S 6 Application................43 6.1 Effect of reflection on the attenuation deviation......43 6.2 Disturbance voltages................43 7 Remote control..............47 7.1 Basic information on remote control..........47 7.2 Remote control – commands.............57 8 Maintenance................. 75 9 Contacting customer support..........77 Annex..................79 A Instrument interfaces............

  • Page 5: Documentation Overview

    ® Documentation overview R&S Documentation overview This section provides an overview of the R&S RSC user documentation. Unless specified otherwise, you find the documents at: https://www.rohde-schwarz.com/manual/RSC User manual The user manual is supplied with the delivery in printed form. It contains descrip- tions for all instrument functions and for remote control of the instrument.
  • Page 6 ® Documentation overview R&S Data sheets and brochures The data sheet contains the technical specifications of the R&S RSC. It also lists the firmware applications and their order numbers, and optional accessories. The brochure provides an overview of the instrument and deals with the specific characteristics.

  • Page 7: Introduction

    ® Introduction R&S Introduction The R&S RSC attenuator is a fast and accurate instrument for setting precisely defined attenuation values. Depending on the specific model, attenuation can be set at a value between 0 dB and 139.9 dB in the frequency range up to 18 GHz. In addition, external attenuators are available, which can be remotely controlled with the base unit.
  • Page 8 ® Introduction R&S User Manual 1313.8910.02 ─ 05...

  • Page 9: Putting The Instrument Into Operation

    ® Putting the instrument into operation R&S Explanation of the front and rear views Putting the instrument into operation The R&S RSC attenuator is available in different models. You can equip the base unit with an internal attenuator and/or use it with up to four external attenuators, Chapter 2, "Introduction", on page 7.
  • Page 10 ® Putting the instrument into operation R&S Explanation of the front and rear views RF port The two RF ports, "A" and "B", can be used as either an input or output port. Depending on the specific model, these interfaces are located on either the front or rear panel.
  • Page 11 ® Putting the instrument into operation R&S Explanation of the front and rear views 3.1.3 View of the R&S RSC-Zxx This view shows the external R&S RSC-Zxx attenuator. User Manual 1313.8910.02 ─ 05...

  • Page 12: Preparing The Instrument

    ® Putting the instrument into operation R&S Preparing the instrument Preparing the instrument This section covers the basic steps required for setting up the R&S RSC and put- ting it into operation. Safety precautions Be sure to follow the instructions in the sections below to prevent injury to people or damage to the instrument.
  • Page 13 ® Putting the instrument into operation R&S Preparing the instrument 3.2.2 Setting up the instrument This instrument is designed for indoor use. Always place the product on a stable, flat and level surface with the bottom of the product facing down. If the product is designed for different positions, secure the product so that it cannot fall over.
  • Page 14 ® Putting the instrument into operation R&S Preparing the instrument Potential damage caused by electrostatic discharge Electrical discharges can damage components of the instrument or a con- nected instrument under test. For this reason, the instrument must only be operated at a workplace that is protected against electrostatic discharge.
  • Page 15 ® Putting the instrument into operation R&S Preparing the instrument 3.2.3 Connecting the R&S RSC to the AC power supply Possible damage to the instrument Before you connect the instrument and turn it on, you must ensure observ- ance of the following points to prevent damage to the instrument: ●...
  • Page 16 ® Putting the instrument into operation R&S Preparing the instrument 3.2.4 Turning the instrument on and starting 1. Use the supplied power cable to connect the R&S RSC to the AC power sup- ply. Danger of electric shock The attenuator complies with the specifications for the EN61010-1 protec- tive class, which means that it can only be connected to a power outlet that has a protective contact.

  • Page 17: Function Check

    ® Putting the instrument into operation R&S Function check standard image appears on the screen. The instrument is now ready for opera- tion, and it can be operated manually or via remote control. 3.2.5 Switching the instrument off Possible data loss due to premature switch-off If, during operation, you switch off the power switch on the back of the instrument loses its current settings.

  • Page 18: Default Settings

    ® Putting the instrument into operation R&S Linux operating system Default settings To set the instrument to a defined state, press the [PRESET] button on the front of the instrument. This function resets all the instrument's settings to the default values, even if a mode is not currently turned on.

  • Page 19: Connecting External Devices

    ® Putting the instrument into operation R&S Connecting external devices USB port using a USB flash drive. You can use the file manager to access the USB flash drive. Connecting external devices The R&S RSC is equipped with different interfaces, for example for connecting external attenuators or USB devices or for connecting to a network.
  • Page 20 ® Putting the instrument into operation R&S Connecting external devices 3.6.2 Connecting USB devices You can connect different peripheral devices to the [USB] port (type A) at the back of the R&S RSC, such as: ● A USB flash drive for simple transmission of data, such as firmware updates, to or from a computer.
  • Page 21 ® Putting the instrument into operation R&S Connecting external devices 3.6.3.1 Configuring the R&S RSC for network operation The network interface works with a 100 MHz IEEE 802.3u Ethernet. The TCP/IP network protocol and the associated network services are preconfigured. To exchange data in a local area network (LAN), it must be possible to address each connected computer or instrument via a unique IP address or a unique computer name.

  • Page 22: Configuration Using Lxi

    ® Putting the instrument into operation R&S Configuration using LXI Example: On the PC: 1. Open the TCP/IP Settings window (Control Panel > Network Connections) 2. Set to static IP address (= deactivate DHCP) 3. Enter the IP address 192.168.0.1 4.
  • Page 23 ® Putting the instrument into operation R&S Configuration using LXI to be the LAN-based successor to GPIB, combining the advantages of Ethernet with the GPIB's simplicity and familiar features. This standard provides a new way to configure virtual front panel instruments by using a network and a Web inter- face.
  • Page 24 ® Putting the instrument into operation R&S Configuration using LXI ● Red LXI symbol The instrument does not have valid IP address. This can be due to one of the following reasons: – The instrument is configured with DHCP, but it is not connected to a DHCP router.
  • Page 25 ® Putting the instrument into operation R&S Configuration using LXI You can find more information about the LXI standard on the LXI website at http://www.lxistandard.org or in the article on LXI in "News from Rohde & Schwarz, 2006/II - 190". 3.7.4 LXI browser interface The only information necessary for performing configuration via the LXI/Web...
  • Page 26 ® Putting the instrument into operation R&S Configuration using LXI On the left side, a navigation bar is visible; there, you find the important "LAN Configuration" menu. This page for LXI WEB configuration now allows extensive configuration of all important LAN parameters. User Manual 1313.8910.02 ─...
  • Page 27 ® Putting the instrument into operation R&S Configuration using LXI 3.7.5 IP configuration ● TCP/IP mode Decides whether DHCP is switched on or not. The IP Address, Subnet Mask, Default Gateway and DNS servers configuration fields are only enabled if DHCP is disabled.
  • Page 28 ® Putting the instrument into operation R&S Configuration using LXI At times, these settings could have to be changed to differ from the displayed presets if DHCP is switched off. If so, ask your network administrator for the corresponding values. ●...

  • Page 29: Configuration Of The Gpib Bus (Iec 625 / Ieee 488)

    ® Putting the instrument into operation R&S Configuration of the GPIB bus (IEC 625 / IEEE 488) The ping utility is not password-protected. Here is how to start a ping between the LXI device and another connected device: 1. "Activate ICMP Ping" on the "Advanced LAN Configuration" page (activated after LCI).
  • Page 30 ® Putting the instrument into operation R&S Configuration of the GPIB bus (IEC 625 / IEEE 488) The following settings are possible: ● Under "GPIB Address", you can enter the IEC bus address between 0 and 30. The factory setting is 20. ●...

  • Page 31: Manual Operation

    ® Manual operation R&S Entering parameters Manual operation The R&S RSC's RF attenuator is set using the keypad on the front panel, via var- iation with the cursor keys or via remote control interfaces. As an alternative, an externally connected keyboard or mouse permits direct (and thus easy) access for making entries and settings.

  • Page 32: Display

    ® Manual operation R&S Help system – [HELP] key Display 1 = Attenuation display with a decimal point, resolution of 0.1 dB 2 = Display of the attenuation deviation with a decimal point. 3 = Abs (absolute) or Rel (relative, regarding 0 dB position) value display 4 = Display of the "User Calibration";...

  • Page 33: File Functions

    ® Manual operation R&S File functions Table 4-1: Using the context-sensitive help Function Front panel PC keyboard Opening the help system Press the [HELP] key. Press the [F2] key. The help page for the respec- tive parameter is displayed. Activating the link Use the arrow keys to select Use the arrow keys to select the link and then click the...
  • Page 34 ® Manual operation R&S File functions File manager You can use the file manager to copy and delete files and to set up and delete directories. Example: To copy a file from the USB stick: ● Start the file manager with [SETUP] → "File"→ "File Manager". ●...

  • Page 35: Instrument Functions

    ® Instrument functions R&S Setting the frequency Instrument functions This chapter explains the functions and setting parameters for the R&S RSC. The accompanying SCPI commands are specified for every parameter; they refer to the description of the corresponding command. Setting the attenuation Depending on the model, pressing the [ATT] key sets the attenuation to 0 dB or changes it in 0.1 dB steps within the range from 1 dB to 139.9 dB.

  • Page 36: Turning The Correction Mode On/Off

    ® Instrument functions R&S Turning the correction mode On/Off Setting the frequency is necessary when the set and displayed attenuation value should be corrected with the aid of the fault table stored in the instrument. 1. Press the [FREQ] key. 2.

  • Page 37: Display Of The Attenuation Deviation

    ® Instrument functions R&S Display of the attenuation deviation Display of the attenuation deviation The R&S RSC's attenuator was tested before delivery, and the correction data was stored for all attenuation settings throughout the entire frequency range. This makes it possible to display the deviation between the displayed and actual attenuation for a given frequency.
  • Page 38 ® Instrument functions R&S Display of the attenuation deviation 5.5.2 User calibration In the [SETUP] → "Attenuator" → "Correction Mode" menu, you can select differ- ent user calibration types. To do this, use the [⇑] or [⇓] cursor keys to navigate to the "User Cal"...
  • Page 39 ® Instrument functions R&S Display of the attenuation deviation SCPI commands: on page 67 ATTenuator<n>:UCALibration on page 67 ATTenuator<n>:UCALibration:LOAD on page 68 ATTenuator<n>:UCALibration:OFFSet 5.5.3 File format for user calibration A CSV file is used as the file format. The decimal separator is a dot (.) and a sem- icolon (;) is used to separate columns from each other.

  • Page 40: Switching To External Attenuators

    ® Instrument functions R&S Cascading external attenuators 1.50E+08; 1.74E-01;-8.53E-3 2.00E+08; 2.24E-01;-4.67E-3 2.50E+08; 2.48E-01;4.32E-3 3.00E+08; 2.71E-01;7.67E-3 3.50E+08; 2.85E-01;1.02E-2 SCPI command: on page 67 ATTenuator<n>:UCALibration:LOAD Switching to external attenuators All R&S RSC models can remotely control up to 4 attenuators that are connected externally.
  • Page 41 ® Instrument functions R&S Cascading external attenuators This logical attenuator then behaves exactly like a single attenuator. Activation is configured automatically and the correction data is calculated. SCPI commands: on page 66 ATTenuator:ENUM? on page 63 ATTenuator<n>:CASCade? User Manual 1313.8910.02 ─ 05...
  • Page 42 ® Instrument functions R&S Cascading external attenuators User Manual 1313.8910.02 ─ 05...

  • Page 43: Application

    ® Application R&S Disturbance voltages Application Effect of reflection on the attenuation deviation The error to be expected for the set attenuation depends on the attenuator's own attenuation error, but also on the reflection coefficient present in the test setup. Besides the input and output reflection factors for the attenuator itself, the reflec- tion coefficient for the signal source and for the connected load also play a crucial role here.
  • Page 44 ® Application R&S Disturbance voltages requires ensuring that no energy flows from the attenuator input to the output by going around the attenuator. The attenuator ensures fulfillment of this prerequisite through careful shielding. Nevertheless, it is possible that – when attenuations are high – the voltage at the attenuator output can be higher than can be calculated from the attenuation that is switched on.
  • Page 45 ® Application R&S Disturbance voltages Maximum input voltage of 7 V Higher voltage damages the attenuator. Figure 6-1: Reduction of a disturbance voltage from the signal voltages by using a cou- pling resistor (RC) and a high return resistance by using chokes (Ch.) You can keep disturbance voltages from the power system low by connecting the generator and the receiver to electrical outlets that are located as close as possi- ble to the instrument.
  • Page 46 ® Application R&S Disturbance voltages User Manual 1313.8910.02 ─ 05...

  • Page 47: Remote Control

    ® Remote control R&S Basic information on remote control Remote control The following sections describe the steps and commands required for remote control of the R&S RSC attenuator. Chapter 7.1, "Basic information on remote control", on page 47 you find infor- mation on setting up the attenuator for remote control and on the available interfa- ces and protocols.
  • Page 48 ® Remote control R&S Basic information on remote control Table 7-1: Remote control interfaces and protocols Interface Comments Protocols, VISA Address ● Local Area There is a LAN interface on the back of the instrument. HiSLIP High-Speed Network LAN Instrument Pro- This interface is based on TCP/IP, and it supports dif- (LAN) tocol (IVI-6.1)
  • Page 49 ® Remote control R&S Basic information on remote control Standard Commands for Programmable Instruments (SCPI) For remote control of the instrument, commands – data messages – in line with the SCPI standard are used. The syntax of commands that are not included in that standard still follows the SCPI rules.
  • Page 50 ® Remote control R&S Basic information on remote control – Addressed commands, which only address the instruments that are addressed as listeners. ● Instrument-dependent messages Instrument-dependent messages are transmitted on the data lines in the same way for all interfaces. The ATN control line is not active (HIGH). The mes- sages are transmitted in ASCII code.
  • Page 51 ® Remote control R&S Basic information on remote control You find detailed descriptions of the commands for controlling the R&S RSC in Chapter 7.2, "Remote control – commands", on page 57. 7.1.1.3 GPIB interface (IEC 625 / IEEE 488) To be able to control the instrument via the GPIB bus interface, the instrument and controller must be connected together with a GPIB bus cable.
  • Page 52 ® Remote control R&S Basic information on remote control 7.1.1.4 LAN interface The instrument is equipped with a LAN interface to enable integration into a local areas network (LAN). This interface consists of a connector, a network card, and protocols (VXI-11). For remote control via the network, the controller and the instrument must be con- nected via the LAN interface to a common network that uses the TCP/IP network protocol.
  • Page 53 ® Remote control R&S Basic information on remote control Example: If the instrument's IP address is 192.1.2.3; its resource name is: TCPIP:: 192.1.2.3::INSTR The controller named RSSM1 is addressed using the resource name TCPIP::RSSM1::INSTR. If multiple instruments are connected to the network, each instrument has its own IP address and the corresponding resource name.
  • Page 54 ® Remote control R&S Basic information on remote control Using VXI-11, each operation is blocked until a VXI-11 instrument hand- shake returns. However, using HiSLIP, data is sent to the instrument using the "fire and forget" method with immediate return. Thus, a successful return of a VISA operation such as viWrite() guarantees only that the command is delivered to the instrument's TCP/IP buffers.
  • Page 55 ® Remote control R&S Basic information on remote control The software for controlling instruments, and the VISA program library with USB support (Version 3.4. or higher) must be installed on the controller. VISA automat- ically detects and configures the R&S instrument when the USB connection is established.
  • Page 56 ® Remote control R&S Basic information on remote control established. Switching between the operating modes does not change the instru- ment settings. A remote control program must first establish the connection to the instrument via the VISA functionality before it can transmit commands or receive responses. When you begin the remote control program, we recommend that you set the instrument to a defined initial state by using the *RST command.

  • Page 57: Remote Control - Commands

    ® Remote control R&S Remote control – commands 7.1.3 Status reporting system The status reporting system stores all information on the instrument's current sta- tus and on the errors that have arisen. This information is stored in the status reg- ister and in an error output queue, and it is made available when queried.
  • Page 58 ® Remote control R&S Remote control – commands of the instrument's dialog boxes. The "List of Commands" at the end of the man- ual contains all commands in alphabetic order. Tips and tricks for operation ... ● The use of upper and lower case letters designates the long and short forms of a command: ATTenuator<n>:...

  • Page 59: Cal

    ® Remote control R&S Remote control – commands ........................61 *TRG ........................62 *TST? ........................62 *WAI *CAL? CALIBRATION QUERY triggers calibration of the instrument and then queries the calibration status. Responses greater than 0 indicate errors. Usage: Query only *CLS CLEAR STATUS sets the status byte (STB), the event status register (ESR) and the EVENt part of the OPERation, the QUEStionable and the XQUEstionable reg-...

  • Page 60: Opc

    ® Remote control R&S Remote control – commands Example: Return value Rohde&Schwarz, R&S RSC = Instrument model 2.1.60.0 = COMPASS version 2.3.0 = R&S R&S RSC version Usage: Query only *OPC OPERATION COMPLETE sets bit 0 in the event status register when all previous commands have been processed.

  • Page 61: Rst

    ® Remote control R&S Remote control – commands The content of the status registers is retained on power-on. As a result, a service request can be triggered if the corre- sponding ESE and SRE status registers are configured accordingly. The contents of the status registers are reset at power-on. *RST [RESET] sets the instrument to a defined default state.
  • Page 62 ® Remote control R&S Remote control – commands *TST? <Errorcode> SELF TEST QUERY triggers the instrument's self test and, if an error is found, outputs an error code. Parameters: <Errorcode> 0 = no error Usage: Query only *WAI WAIT-to-CONTINUE does not allow subsequent commands to be processed until all previous commands have been executed.

  • Page 63: Attenuator:Attenuation

    ® Remote control R&S Remote control – commands ATTenuator<n>:ATTenuation <Attenuation> This command sets the attenuation for the specified attenuator. Suffix: <n> 1 to 7 Selection of the attenuator to be controlled. 1: Internal attenuator 2: Ext 1 3: Ext 2 4: Ext 3 5: Ext 4 6: Log 1...

  • Page 64: Example: Att2:Ucal

    ® Remote control R&S Remote control – commands Example: ATT6:CASC ON,3,4? Defines the logical attenuator Log1 as a cascade of Ext2 and Ext3 Usage: Query only ATTenuator:CATalog? This command queries a string list from all attenuators. Return values: Return values Index1,Name1,SerialNumber1,StockNumber1 | Index2,Name2,SerialNumber2,StockNumber2 | etc.

  • Page 65: Attenuator:Correction

    ® Remote control R&S Remote control – commands Example: ATT1:CMOD REL Sets the internal attenuator's correction mode to "Rel." ATTenuator<n>:CORRection <Corr> This command turns the correction mode for the specified attenuator on or off. Suffix: <n> 1 to 7 Selection of the attenuator to be controlled. 1: Internal attenuator 2: Ext 1 3: Ext 2...

  • Page 66: Attenuator:enum

    ® Remote control R&S Remote control – commands Parameters: <Deviation> Range: -100E+24 to 100E+24 Increment: 0 Example: ATT1:DEV? Queries the attenuation deviation of the internal attenuator. 0.347000 Usage: Query only ATTenuator:ENUM? This command queries the attenuators that are available. Return values: Return values Index1,Name1,SerialNumber1,StockNumber1 | Index2,Name2,[SerialNumber2,StockNumber2][Index-...

  • Page 67: Attenuator:Ucalibration

    ® Remote control R&S Remote control – commands Suffix: <n> 1 to 7 Selection of the attenuator to be controlled. 1: Internal attenuator 2: Ext 1 3: Ext 2 4: Ext 3 5: Ext 4 6: Log 1 7: Log 2 Setting parameters: <Frequency>...

  • Page 68: Attenuator:Ucalibration:offset

    ® Remote control R&S Remote control – commands Suffix: <n> 1 to 7 Selection of the attenuator to be controlled. 1: Internal attenuator 2: Ext 1 3: Ext 2 4: Ext 3 5: Ext 4 6: Log 1 7: Log 2 Setting parameters: <File>...
  • Page 69 ® Remote control R&S Remote control – commands Example: ATT1:UCAL:LOFFS 5 Sets the offset value for the user calibration for the internal attenuator to 5 dB. 7.2.3 DIAGnostic subsystem This chapter describes the commands for the DIAGnostic subsystem................. 69 DIAGnostic:SERVice:HWINfo? ................
  • Page 70 ® Remote control R&S Remote control – commands DIAGnostic:SERVice:PASSword <Password> This command sets the service password and thus controls access to the service functions. Parameters: <Password> '<String>' Example: DIAG:SERV:PASS XXXX Usage: Setting only DIAGnostic:SERVice:SFUNction <ServiceFunction> This command activates a service function. The parameter string's content is identical to the code that is used for manual entry.
  • Page 71 ® Remote control R&S Remote control – commands Example: DIAG:SERV:STES:RES? Usage: Query only DIAGnostic:SERVice:SWINfo? This command queries the software information. Example: DIAG:SERV:SWIN? Queries the software information. "OS Version|0.99 [Build 75]|RSC Firmware|00.95|Compass|3.0.4.0" Usage: Query only 7.2.4 SYSTem subsystem This chapter describes the commands for the SYSTem subsystem..............

  • Page 72: System:date

    ® Remote control R&S Remote control – commands SYSTem:COMMunicate:GPIB:RTERminator <rterminator> This command changes the instrument's receive terminator. For ASCII data, the specification stipulates the use of <LF> and/or <EOI> as the line terminator. For transmitting binary data (such as trace data) to the instrument, the binary code (0AH) used for <LF>...

  • Page 73: System:error:clear:all

    ® Remote control R&S Remote control – commands SYSTem:ERRor:CLEar:ALL This command deletes all entries in the SYSTEM MESSAGES table. This command is an event; therefore, it has not a query or an *RST value. Example: SYST:ERR:CLE:ALL Usage: Event SYSTem:ERRor:LIST? This command reads out all system messages, whereby a list of strings separa- ted by commas is returned.

  • Page 74: System:lxi:lanreset

    ® Remote control R&S Remote control – commands SYSTem:LXI:LANReset This command resets the LAN configuration as required by the LXI standard. In addition, the password and the LXI instrument description are reset. Example: SYST:LXI:LANR Usage: Event SYSTem:LXI:MDEScription <String> This command shows the LXI instrument description or makes it possible to change the description.

  • Page 75: Maintenance

    ® Maintenance R&S Maintenance The R&S RSC attenuator does not require maintenance at regular intervals. Maintenance work is limited to cleaning the instrument. It is, however, advisable to check the nominal data from time to time. Danger of electric shock Before cleaning, make sure that the instrument is switched off and that it is disconnected from all power supplies.
  • Page 76 ® Maintenance R&S slipping around inside the package. Wrap the instrument in anti-static film to pro- tect it against electrostatic charging. User Manual 1313.8910.02 ─ 05...

  • Page 77: Contacting Customer Support

    ® Contacting customer support R&S Contacting customer support Technical support – where and when you need it For quick, expert help with any Rohde & Schwarz product, contact our customer support center. A team of highly qualified engineers provides support and works with you to find a solution to your query on any aspect of the operation, program- ming or applications of Rohde &...
  • Page 78 ® Contacting customer support R&S User Manual 1313.8910.02 ─ 05...

  • Page 79: Annex

    ® Instrument interfaces R&S GPIB bus (IEC 625 / IEEE 488) Annex Instrument interfaces The following section describes the R&S RSC's interfaces for remote control. GPIB bus (IEC 625 / IEEE 488) The instrument comes with a GPIB bus connection as one of the standard fea- tures.
  • Page 80 ® Instrument interfaces R&S GPIB bus (IEC 625 / IEEE 488) A.1.2 GPIB bus lines Pin assignment Figure A-1: Pin assignment for the GPIB Bus interface Lines ● Data bus with 8 lines, DIO 1 to DIO 8 The transmission is accomplished in bit-parallel and byte-serial order in the ASCII/ISO code.
  • Page 81 ® Instrument interfaces R&S GPIB bus (IEC 625 / IEEE 488) This has two functions in conjunction with ATN: ATN=HIGH active LOW marks the end of a data transmission. ATN=LOW active LOW triggers a parallel poll. ● Third handshake bus with three lines: –...
  • Page 82 ® Instrument interfaces R&S GPIB bus (IEC 625 / IEEE 488) A.1.4 GPIB bus interface messages Interface messages are transferred to the instrument on the data lines, whereby the ATN "attention" control line is active (LOW). They are used for communica- tions between the controller and the instrument and can only be transmitted by a controller that has the controller function on the GPIB bus.

  • Page 83: Ethernet Interface (Lan)

    ® Instrument interfaces R&S Ethernet interface (LAN) Command Effect on the instrument &GTR (Go to remote) Transition to the remote state (remote control). &PPC (Parallel poll configure) Configures the instrument for parallel poll. &SDC (Selected device clear) Cancels processing of the commands that were received and sets the command pro- cessing software to a defined...
  • Page 84 ® Instrument interfaces R&S Ethernet interface (LAN) Figure A-2: Example of LAN remote control in accordance with OSI reference model (VXI-11) Based on TCP/UDP, the messages are exchanged between the controller and the instrument by Open Network Computing (ONC) Remote Procedure Calls (RPC). The permitted RPC messages are, with XDR, known as the VXI-11 standard.
  • Page 85 ® Instrument interfaces R&S Ethernet interface (LAN) Figure A-3: Channels between the instrument and the controller with VXI-11 Within the network, the number of controllers that can access an instrument is practically unlimited. Inside the instrument, the individual controllers are clearly differentiated from one another.
  • Page 86 ® Instrument interfaces R&S Ethernet interface (LAN) A.2.1 VXI-11 interface messages With an Ethernet connection, the interface messages are referred to as low-level control messages. They can be used to emulate the GPIB Bus's interface mes- sages. Table A-3: VXI-11 interface messages Command Effect on the instrument &ABO...

  • Page 87: List Of Commands

    ® List of commands R&S List of commands *CAL?............................59 *CLS............................. 59 *ESE.............................59 *ESR?............................59 *IDN?............................59 *OPC............................60 *OPC?............................60 *OPT?............................60 *PSC.............................60 *RST.............................61 *SRE.............................61 *STB?............................61 *TRG............................61 *TST?............................62 *WAI............................. 62 ATTenuator:CATalog?........................64 ATTenuator:ENUM?........................66 ATTenuator<n>:ATTenuation......................63 ATTenuator<n>:CASCade?......................63 ATTenuator<n>:CMODe.......................64 ATTenuator<n>:CORRection......................65 ATTenuator<n>:DEViation?......................65 ATTenuator<n>:FREQency......................
  • Page 88 ® List of commands R&S SYSTem:LANGuage........................73 SYSTem:LXI:INFo?........................73 SYSTem:LXI:LANReset........................74 SYSTem:LXI:MDEScription......................74 SYSTem:LXI:PASSword.......................74 SYSTem:TIME..........................74 User Manual 1313.8910.02 ─ 05...

  • Page 89: Index

    ® Index R&S Index Symbols GPIB Bus Interface functions ......81 *CAL? ............59 GPIB bus interface (IEC 625 / IEEE 488) 79 *CLS ............59 *ESE ............59 *ESR ............59 Hardware options ........60 *IDN ............59 HiSLIP *OPC ............60 Protocol ..........53 *OPT ............60 *PSC ............60...
  • Page 90 ® Index R&S Self test ........... 62 Service request (SRQ) ......61 softkey Password (remote control) ....70 Self test (remote control) ....62 Service Function (remote control) ..70 Versions+Options (remote control) ..59 Softkey Hardware info (remote control) ... 60 Installed options (remote control) ..

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