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R&S UPZ Operating Manual

R&S UPZ Operating Manual

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R&S
UPZ
®
Audio Switcher
Operating Manual
1120.8610.14 – 05

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  • Page 1 R&S ® Audio Switcher Operating Manual 1120.8610.14 – 05...
  • Page 2 The Operating Manual describes the following R&S UPZ models and options: ● Model 1120.8004.02 ● Model 1120.8004.03 ● Model 1120.8004.12 ● Model 1120.8004.13 © 2015 Rohde & Schwarz GmbH & Co. KG Mueldorfstr. 15, 81671 Munich, Germany Phone: +49 89 41 29 - 0...
  • Page 3 Basic Safety Instructions Always read through and comply with the following safety instructions! All plants and locations of the Rohde & Schwarz group of companies make every effort to keep the safety standards of our products up to date and to offer our customers the highest possible degree of safety. Our products and the auxiliary equipment they require are designed, built and tested in accordance with the safety standards that apply in each case.
  • Page 4 Basic Safety Instructions Symbol Meaning Symbol Meaning Warning! Hot surface Alternating current (AC) Protective conductor terminal Direct/alternating current (DC/AC) Ground Device fully protected by double (reinforced) insulation Ground terminal EU labeling for batteries and accumulators For additional information, see section "Waste disposal/Environmental protection", item 1.
  • Page 5 Basic Safety Instructions Operating states and operating positions The product may be operated only under the operating conditions and in the positions specified by the manufacturer, without the product's ventilation being obstructed. If the manufacturer's specifications are not observed, this can result in electric shock, fire and/or serious personal injury or death. Applicable local or national safety regulations and rules for the prevention of accidents must be observed in all work performed.
  • Page 6 Basic Safety Instructions 6. The product may be operated only from TN/TT supply networks fuse-protected with max. 16 A (higher fuse only after consulting with the Rohde & Schwarz group of companies). 7. Do not insert the plug into sockets that are dusty or dirty. Insert the plug firmly and all the way into the socket provided for this purpose.
  • Page 7 Basic Safety Instructions 2. Before you move or transport the product, read and observe the section titled "Transport". 3. As with all industrially manufactured goods, the use of substances that induce an allergic reaction (allergens) such as nickel cannot be generally excluded. If you develop an allergic reaction (such as a skin rash, frequent sneezing, red eyes or respiratory difficulties) when using a Rohde &...
  • Page 8 Basic Safety Instructions 2. Adjustments, replacement of parts, maintenance and repair may be performed only by electrical experts authorized by Rohde & Schwarz. Only original parts may be used for replacing parts relevant to safety (e.g. power switches, power transformers, fuses). A safety test must always be performed after parts relevant to safety have been replaced (visual inspection, protective conductor test, insulation resistance measurement, leakage current measurement, functional test).
  • Page 9 Instrucciones de seguridad elementales Waste disposal/Environmental protection 1. Specially marked equipment has a battery or accumulator that must not be disposed of with unsorted municipal waste, but must be collected separately. It may only be disposed of at a suitable collection point or via a Rohde &...
  • Page 10 Instrucciones de seguridad elementales Se parte del uso correcto del producto para los fines definidos si el producto es utilizado conforme a las indicaciones de la correspondiente documentación del producto y dentro del margen de rendimiento definido (ver hoja de datos, documentación, informaciones de seguridad que siguen). El uso del producto hace necesarios conocimientos técnicos y ciertos conocimientos del idioma inglés.
  • Page 11 Instrucciones de seguridad elementales Símbolo Significado Símbolo Significado Aviso: Cuidado en el manejo de dispositivos Distintivo de la UE para la eliminación por sensibles a la electrostática (ESD) separado de dispositivos eléctricos y electrónicos Más información en la sección "Eliminación/protección del medio ambiente", punto 2.
  • Page 12 Instrucciones de seguridad elementales 1. Si no se convino de otra manera, es para los productos Rohde & Schwarz válido lo que sigue: como posición de funcionamiento se define por principio la posición con el suelo de la caja para abajo, modo de protección IP 2X, uso solamente en estancias interiores, utilización hasta 2000 m sobre el nivel del mar, transporte hasta 4500 m sobre el nivel del mar.
  • Page 13 Instrucciones de seguridad elementales 6. Solamente está permitido el funcionamiento en redes de alimentación TN/TT aseguradas con fusibles de 16 A como máximo (utilización de fusibles de mayor amperaje solo previa consulta con el grupo de empresas Rohde & Schwarz). 7.
  • Page 14 Instrucciones de seguridad elementales Funcionamiento 1. El uso del producto requiere instrucciones especiales y una alta concentración durante el manejo. Debe asegurarse que las personas que manejen el producto estén a la altura de los requerimientos necesarios en cuanto a aptitudes físicas, psíquicas y emocionales, ya que de otra manera no se pueden excluir lesiones o daños de objetos.
  • Page 15 Instrucciones de seguridad elementales Reparación y mantenimiento 1. El producto solamente debe ser abierto por personal especializado con autorización para ello. Antes de manipular el producto o abrirlo, es obligatorio desconectarlo de la tensión de alimentación, para evitar toda posibilidad de choque eléctrico. 2.
  • Page 16 Instrucciones de seguridad elementales 2. Las asas instaladas en los productos sirven solamente de ayuda para el transporte del producto por personas. Por eso no está permitido utilizar las asas para la sujeción en o sobre medios de transporte como p. ej. grúas, carretillas elevadoras de horquilla, carros etc. Es responsabilidad suya fijar los productos de manera segura a los medios de transporte o elevación.
  • Page 17 Quality management Certified Quality System ISO 9001 and environmental Certified Environmental System management ISO 14001 Sehr geehrter Kunde, Dear customer, Cher client, Sie haben sich für den Kauf You have decided to buy a Vous avez choisi d’acheter un eines Rohde & Schwarz Produk- Rohde &...

  • Page 18: Customer Support

    Customer Support Technical support – where and when you need it For quick, expert help with any Rohde & Schwarz equipment, contact one of our Customer Support Centers. A team of highly qualified engineers provides telephone support and will work with you to find a solution to your query on any aspect of the operation, programming or applications of Rohde &...

  • Page 19: Table Of Contents

    Installation on the R&S UPP/UPV with Windows XP Operating System ....18 1.4.4.2 Installation on the R&S UPP/UPV with Windows 7 Operating System .......21 1.4.4.3 Making USB Connection to the R&S UPZ ..............25 1.4.5 Connection to the R&S UPL ..................27 1.4.6 Connection to the R&S UPV ..................28...
  • Page 20 Display Elements .......................33 Link Establishment using an R&S UPL ..............34 R&S UPL Default Setting ...................36 Operating the R&S UPZ from the R&S UPL ............37 Link Establishment using an R&S UPV ..............40 Link Establishment using an R&S UPV and USB ...........42 Link Establishment using an R&S UPV and RS232 ..........43...

  • Page 21: Figures

    Pin assignment of XLR socket and plug ............. 15 Fig. 1-10 Switcher cascading ................. 16 Fig. 1-11 Connecting R&S UPL and R&S UPZ using a RS232-Extension Cord ... 27 Fig. 1-12 Connecting R&S UPV and R&S UPZ using a RS232-Extension Cord or a USB Device Cable ........28 Fig.

  • Page 22: Tables

    Fig. 4-1 Pin assignment of the D-sub connectors ............ 59 Tables Table 1-1 Operating the R&S UPZ at other AC supplies ........12 Relationship device address  channel number ........32 Table 1-2 Table 2-1 List of settings and IEC/IEEE-bus commands: R&S UPL ....... 40 Table 2-2 List of settings and IEC/IEEE-bus commands: R&S UPV ......

  • Page 23: Documentation Overview

    R&S UPZ Documentation Overview Documentation Overview The user documentation for the R&S UPZ is divided as follows: ● Operating Manual ● Service Manual The current user documentation is also available on the internet: http://www.rohde- schwarz.com/product/UPZ.html Operating Manual The printed operating manual is also provided in PDF format on the CD-ROM. It provides a complete reference of the instrument functions and remote control.

  • Page 24: Conventions Used In The Documentation

    R&S UPZ Conventions Used in the Documentation Conventions Used in the Documentation The following conventions are used throughout the R&S UPZ Operating Manual: Typographical conventions Convention Description “Graphical user interface elements” All names of graphical user interface elements both on the screen and on the front and rear panels, such as dialog boxes, softkeys, menus, options, buttons etc., are enclosed by quotation marks.

  • Page 25: Putting Into Operation

    1 Putting into Operation 1.1 Overview A switcher of the R&S UPZ family can combine or distribute audio signals. Each R&S UPZ thus extends an Audio Analyzer to eight additional input or output channels. The R&S UPZ is available as input or output switcher.

  • Page 26: Front And Rear Panel

    Switch on LED Inputs 1 to 8 Fig. 1-2 Front panel of input switcher Starting from variant .12, each R&S UPZ is equipped with an additional USB device connection at the rear panel which allows alternative control via USB. RS-232-C control connectors...

  • Page 27: Output Switcher

    Switch on LED Outputs 1 to 8 Fig. 1-4 Front panel of output switcher Starting from variant .13, each R&S UPZ is equipped with an additional USB device connection at the rear panel which allows alternative control via USB. RS-232-C control connectors...

  • Page 28: Putting Into Operation

    Putting into Operation Putting into Operation 1.3 Putting into Operation This section describes the basic steps to be taken when setting up the R&S UPZ for the first time. Shock hazard Do not open the instrument casing. As a rule, normal operation of the instrument does not require opening the casing.

  • Page 29: Unpacking And Checking The Instrument

    1.3.2 Placing or Mounting the Instrument Permissible operating position of the R&S UPZ: horizontal Operating the instrument in vertical position is not recommended since the narrow casing (1 HU) may fall over.

  • Page 30: Mounting The Instrument In A Rack

    The R&S UPZ can be connected to single-phase AC supply with a nominal voltage of 115 V and 230 V and nominal frequencies of 50 Hz to 60 Hz. The R&S UPZ should be set to the correct AC supply voltage at the rear. The values of the all-pole fuse should be adapted accordingly.

  • Page 31: Power Fuses

    For replacing the fuses, first remove the power cable from the R&S UPZ. The fuse holder can then be opened using a screwdriver and pulled out. Use only fuses of the specified type as a replacement.

  • Page 32: Switching The Instrument On And Off

    The instrument is on when the ON LED lights up. Immediately after power-up no channel is selected, i.e. all channel LEDs are off. A routine is run in the R&S UPZ, which initializes the serial interface, the internal timers and the ports.

  • Page 33: Connection To The Test Setup

    In professional audio applications, all signal lines are generally balanced in order to avoid interference coupling. For this reason, the internal signal lines of Audio Switchers R&S UPZ are balanced and equipped with the XLR connectors commonly used in studio engineering. The pin assignment is defined and shown in Fig.

  • Page 34: Fig. 1-10 Switcher Cascading

    R&S UPZ. The busbars of the R&S UPZ allow several switchers to be interconnected to form a large system. The signal lines at the rear of the R&S UPZ are interconnected via the XLR connectors according to Fig.

  • Page 35: Control Of The R&S Upz

    Control via the IEC/IEEE bus is only possible by using an Audio Analyzer. Depending on the device, a host PC can control the analyzer via IEC/IEEE-bus, LAN or USB device, and the Audio Analyzer controls the R&S UPZ via the RS232 or USB device. The required IEC/IEEE-bus commands are given in Table 2-1.

  • Page 36: Installation On The R&S Upp/Upv With Windows Xp Operating System

    1.4.4.1 Installation on the R&S UPP/UPV with Windows XP Operating System The USB driver for the R&S UPZ is included in the R&S UPP/UPV as of firmware version 3.2.0. When connecting the R&S UPZ to the R&S UPP/UPV for the first time, the "Found New Hardware Wizard"...
  • Page 37 R&S UPZ Putting into Operation Connection to the Test Setup Select , continue with Select .., continue with Operating Manual 1120.8610.14 - 05...
  • Page 38 R&S UPZ Putting into Operation Connection to the Test Setup Select For firmware version 3.2.0 and 3.3.x select the folder C:\UPV\Drivers\ For firmware version 4.0.1 or higher select the folder C:\Program Files\Rohde- Schwarz\UPX\3.18\RS.GPAudioAdditions\usb-to-serial. Continue with Operating Manual 1120.8610.14 - 05...

  • Page 39: Installation On The R&S Upp/Upv With Windows 7 Operating System

    Hardware Wizard" does not come automatically, as was the case with the Windows XP operating system. Rather, driver installation must be selectively initiated. Connect the R&S UPZ to the mains, switch it on and connect it via USB cable to one of the USB ports on the R&S UPP/UPV.
  • Page 40 R&S UPZ Putting into Operation Connection to the Test Setup The "Computer Management" window opens. Operating Manual 1120.8610.14 - 05...
  • Page 41 R&S UPZ Putting into Operation Connection to the Test Setup Select "Device Manager" on the left and "Other devices" on the right. The "USB < - > Serial" device appears, slightly indented, with a yellow highlighted exclamation point. This means the USB device has been detected but the driver is not yet installed.
  • Page 42 R&S UPZ Putting into Operation Connection to the Test Setup The USB driver for the R&S UPZ is on the R&S UPP/UPV hard disk under C:\Program Files\Rohde-Schwarz\UPX\3.18\RS.GPAudioAdditions\usb-to-serial. The name of the directory designated "3.18" may deviate slightly. Now use "Browse" to select this path and confirm with "OK" and then click "Next".

  • Page 43: Making Usb Connection To The R&S Upz

    R&S UPZ connected to the R&S UPP/UPV is ready to operate. 1.4.4.3 Making USB Connection to the R&S UPZ The USB connection to the R&S UPZ is made for the R&S UPP/UPV via the switcher panel: Operating Manual 1120.8610.14 - 05...
  • Page 44 Putting into Operation Connection to the Test Setup Open the Switcher Panel and make the following settings: Connection = COM-Port = Auto The R&S UPZ can now be operated via the Switcher Panel as usual. Operating Manual 1120.8610.14 - 05...

  • Page 45: Connection To The R&S Upl

    The data rate is 19200 baud, no parity, 8 bits and 1 stop bit, and is permanently set in the R&S UPZ. If the R&S UPZ is to be controlled via another instrument, the latter has to be adapted to the preset interface parameters of the R&S UPZ.

  • Page 46: Connection To The R&S Upv

    1 2 4 8 F ROM PREVIOUS T O ANALYZ ER F ROM PREVIOUS T O ANALYZ ER Fig. 1-12 Connecting R&S UPV and R&S UPZ using a RS232-Extension Cord or a USB Device Cable Operating Manual 1120.8610.14 - 05...

  • Page 47: Connection To The R&S Upp

    Therefore a USB connection is the only way of controlling an R&S UPZ form an R&S UPP. Starting from variant .12 and .13 the R&S UPZ is equipped with an USB device connection. Older models which do not offer an USB interface can be controlled by the R&S UPP by usage of a conventional USB-COM adapter cable.

  • Page 48: Switcher Cascading

    The D-sub male connector is the output for the next R&S UPZ and the D-sub female connector is the input for the preceding one. The first R&S UPZ in the series is thus connected to the Audio Analyzer via the female connector and the RS232 extension cable or an USB cable.

  • Page 49: Setting The Instrument Address

    1.4.9 Setting the Instrument Address On the rear panel of the R&S UPZ there is a coding switch, which is used to set the device address (from 0 to 15). Each R&S UPZ of the same type is to be assigned an own address.

  • Page 50: Table 1-2 Relationship Device Address  Channel Number

    121 to 128 1111 Although only 16 addresses are available, it is possible to connect 32 R&S UPZ. This is due to the fact that an input and an output switcher can be connected to each address. The controlling Audio Analyzer recognizes the different types of switcher and selects the desired one.

  • Page 51: Manual Operation

    LED lighting up for channel 8. If no channel is selected in a R&S UPZ (e.g. by channel No. 0 or a channel that is outside of the specified channel range), the busbar LED A or B goes out.

  • Page 52: Link Establishment Using An R&S Upl

    R&S UPL or the space bar on a connected keyboard opens the following window. Fig. 2-1 Option Panel: R&S UPL ► Select "ON" to enable operation of the R&S UPZ: Fig. 2-2 Switcher Panel: R&S UPL Operating Manual 1120.8610.14 - 05...
  • Page 53 After opening the switcher user interface, the link between all switchers connected is established. This operation is performed as follows: First of all, the R&S UPL searches all addresses from 0 to 15 for a R&S UPZ connected. Each address is queried twice, first for a connected input switcher, then for a connected output switcher.

  • Page 54: R&S Upl Default Setting

    R&S UPZ Manual Operation R&S UPL Default Setting 2.4 R&S UPL Default Setting If the switcher panel is activated for the first time after loading the R&S UPL default setup, the channels are set to a defined default state. All channels of the two switcher types are set to 0 in this state.

  • Page 55: Operating The R&S Upz From The R&S Upl

    If a suitable setup is available, channel numbers from 0 to 128 are permissible. Either all 15 switcher addresses are occupied or the suitable R&S UPZ address has to be set at the coding switch for entering higher channel numbers.

  • Page 56: Fig. 2-5 Error Message: R&S Upl

    B. This setting can be used to supply all DUTs connected with signals for burn-in tests. If the user enters a channel number, which corresponds to a R&S UPZ at a non- assigned address, the R&S UPL generates an error message, for example: Fig.

  • Page 57: Fig. 2-7 Complete Tracking Feature: R&S Upl

    B vs A and Out vs Inp : Fig. 2-7 Complete tracking feature: R&S UPL This user interface of the R&S UPZ displays all settings, which can be performed from the R&S UPL. The user can select any line. The other channels are automatically updated by the R&S UPL.

  • Page 58: Link Establishment Using An R&S Upv

    The following steps illustrate how to establish a connection between an R&S UPZ and an R&S UPV. If the R&S UPZ needs to be controlled via RS232, open the Config Panel from the menu bar: Fig. 2-8 Config Panel: R&S UPV The selection “Used for“...

  • Page 59: Fig. 2-9 Com Interface: R&S Upv

    Open the Switcher Panel using the menu bar: Fig. 2-10 Opening the Switcher Panel: R&S UPV Depending on whether RS232 or USB should be used for controlling the R&S UPZ, the according interface should be selected: Fig. 2-11 Choosing the Interface: R&S UPV...

  • Page 60: Link Establishment Using An R&S Upv And Usb

    Fig. 2-12 USB Serial Port: R&S UPV The easiest way of establishing a connection however is using the „Auto“ setting. In this mode, the R&S UPV scans all available COM Ports for an R&S UPZ and waits for their response.

  • Page 61: Link Establishment Using An R&S Upv And Rs232

    After opening the switcher user interface, the link between all switchers connected is established. This operation is performed as follows: First of all, the R&S UPV searches all addresses from 0 to 15 for a R&S UPZ connected. Each address is queried twice, first for a connected input switcher, then for a connected output switcher.

  • Page 62: R&S Upv Default Setting

    "0" with the tracking setting described above. All other settings are then adapted. 2.10 Operating the R&S UPZ from the R&S UPV The figure shows the operating panel displayed when an input switcher and an output switcher are connected (otherwise, only the lines relating to the recognized switcher type would appear).

  • Page 63: Fig. 2-19 Error Message: R&S Upv

    If a suitable setup is available, channel numbers from 0 to 128 are permissible. Either all 15 switcher addresses are occupied or the suitable R&S UPZ address has to be set at the coding switch for entering higher channel numbers.

  • Page 64: Fig. 2-20 Tracking Selection: R&S Upv

    R&S UPZ Manual Operation Operating the R&S UPZ from the R&S UPV Fig. 2-20 Tracking selection: R&S UPV Table 2-2 indicates all possible settings in the R&S UPV control panel. The associated remote control commands are listed. Further information on the syntax of the R&S UPV remote control commands is given in the R&S UPV operating manual.

  • Page 65: Link Establishment Using An R&S Upp

    During the installation of the R&S UPV firmware, a driver for controlling the R&S UPZ via USB is installed automatically. The USB interface is listed as “USB Serial Port” in the Device Manager and maps the USB chip inside the R&S UPZ to a virtual COM Port.

  • Page 66: Fig. 2-23 Com Port Scan: R&S Upp

    Link Establishment using an R&S UPP The easiest way of establishing a connection however is using the „Auto“ setting. In this mode, the R&S UPP scans all available COM Ports for an R&S UPZ and waits for their response. Fig. 2-23 COM Port Scan: R&S UPP A connection is established by selecting the Switcher checkbox.

  • Page 67: R&S Upp Default Setting

    The R&S UPP cannot recognize if two or more switchers are set inadvertently to the same address. It "sees" only one R&S UPZ at the address concerned because the switchers respond to the query practically at the same time. This means that two or more switchers set the same channel.

  • Page 68: Operating The R&S Upz From The R&S Upp

    If a suitable setup is available, channel numbers from 0 to 128 are permissible. Either all 15 switcher addresses are occupied or the suitable R&S UPZ address has to be set at the coding switch for entering higher channel numbers.

  • Page 69: Fig. 2-28 Error Message: R&S Upp

    Manual Operation Operating the R&S UPZ from the R&S UPP If the user enters a channel number, which corresponds to a R&S UPZ at a non- assigned address, the R&S UPP generates an error message, for example: Fig. 2-28 Error Message: R&S UPP This error message can be acknowledged.

  • Page 70: Table 2-3 List Of Settings And Iec/Ieee-Bus Commands: R&S Upp

    R&S UPZ Manual Operation Operating the R&S UPZ from the R&S UPP The following table indicates all possible settings in the R&S UPP control panel. The associated remote control commands are listed. Further information on the syntax of the R&S UPV remote control commands is given in the R&S UPP operating manual.

  • Page 71: Remote Control Of R&S Upz

    USB Device R&S UPP IEC Bus USB Device USB Device The RS-232-C commands (see section 4 Remote Control via an External PC on page 58) are used to control the R&S UPZ directly from a PC. Operating Manual 1120.8610.14 - 05...

  • Page 72: Applications

    Input Switcher 3 Applications Since the signal path of the R&S UPZ is a pure relay switching matrix, its use is not limited to audio frequency applications. It is possible to switch AES/EBU-coded signals by means of a R&S UPZ, for example. Due to the impedance of the connectors and lines in the R&S UPZ, the cables used should not be too long.

  • Page 73: Output Switcher

    R&S UPZ Applications Output switcher 3.2 Output switcher The following basic diagram shows a typical application of an output switcher. R&S Audio Analyzer Rs232 FROM DEVICE PREVIOUS Tuner Phono Tape Signal Inputs Stereo System Speaker Outputs Fig. 3-2 Use of output switcher A commercial stereo system generally has several inputs for feeding signals.
  • Page 74 R&S UPZ Applications Output switcher The output switcher has a special feature: After channel number –1 has been entered, the output switcher can through-connect all signal paths in busbar B, except the path selected for busbar A. This setting allows, for example, worst-case crosstalk measurements, in which the coupled residual signal is measured in one channel and all other channels are driven.

  • Page 75: Combined Use Of Input And Output Switcher

    DUTs with the correct input signal by means of the Audio Analyzer and two R&S UPZ without recabling (see above). Thus, the correct stimulus signal is provided for different test setups or measuring instruments in order to obtain conclusive results.

  • Page 76: Remote Control Via An External Pc

    RS-232-C control programs should always set a default status (e.g. with the *RST command) and then make the required settings. If the R&S UPZ is not controlled via the R&S UPL but via a PC, the special features of the modified RS-232-C interfaces must be taken into account.

  • Page 77: Characteristics Of The Interface

    R&S UPZ to the controlling instrument DSR (Data Set Ready) (Data Set Ready) Output; a high level informs the controlling instrument that the R&S UPZ is ready for operation GND (Ground) (Ground) Interface ground, connected to the R&S UPZ...

  • Page 78: Transmission Parameters

    Handshake A software handshake is switched off (OFF) The table below contains only a query, which triggers the identification of a R&S UPZ and a setting command, which performs a channel setting. To comply with the standardized SCPI commands the *RST command has been included, which ensures that all R&S UPZ connected switch off their relays and thus open all channels.

  • Page 79: Special Channel Settings

    Output-Switcher mit „-1“ oa19 ... ob-1 Channel 3 of a R&S UPZ at address 2 is switched to busbar A. Busbar B has connected all channels, except channel 3 (= 19 on counting the possible channels from 0 to 128).
  • Page 80 Example: ● Channel 3 is connected to busbar A. Then, the R&S UPZ receives the command to connect channel 3 to busbar B. Channel 3 and busbar A are disconnected (relay opened) and channel 3 is connected to busbar B.

  • Page 81: Maintenance

    Mechanical Maintenance 5 Maintenance The following section provides instructions for maintenance, storage and packaging of the R&S UPZ. 5.1 Mechanical Maintenance The instrument does not need a periodic maintenance. Only the cleaning of the instrument is essential. The outside of the instrument is suitably cleaned using a soft, lint-free dust cloth.

  • Page 82: Electrical Maintenance

    Electrical Maintenance 5.2 Electrical Maintenance The R&S UPZ usually does not require any electrical maintenance. To ensure correct operation in compliance with data sheet specifications over a long time, it is recommended to have the specifications checked in a Rohde & Schwarz agency at intervals of 3 years.

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