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R&S DST200 User Manual
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R&S DST200 User Manual

R&S DST200 User Manual

Rf diagnostic chamber
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R&S
DST200
RF Diagnostic Chamber
User Manual
(??>E2)
1515.1421.02 ─ 01

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Summary of Contents for R&S DST200

  • Page 1 ® R&S DST200 RF Diagnostic Chamber User Manual (??>E2) 1515.1421.02 ─ 01...
  • Page 2 Bluetooth SIG, Inc. and any use of such marks by Rohde & Schwarz is under license. Trade names are trademarks of the owners. The following abbreviations are used throughout this guide: R&S ® DST200 is abbreviated as R&S DST200, options R&S ® DST-Bxxx as ®...
  • Page 3 ® Contents R&S DST200 Contents 1 Safety Instructions.................5 2 Short Description...................6 Positioning the RF Diagnostic Chamber..............7 Opening and Closing the Front Door................8 Connecting the EUT and the Test Equipment............9 3D Positioner.......................11 Elevated EUT Table.....................12 3 Test Scenarios..................14 Desense and Self-Interference Tests................14 4 Path Loss Measurement..............16...
  • Page 4 ® Contents R&S DST200 Mounting Filter and Interface Panels................36 Replacing the Shielding Gaskets................37 Functional Check......................38 Expendable Parts......................38 Glossary....................40 Index......................41 User Manual 1515.1421.02 ─ 01...
  • Page 5 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 6 Basic Safety Instructions Tags and their meaning The following signal words are used in the product documentation in order to warn the reader about risks and dangers. indicates a hazardous situation which, if not avoided, will result in death or serious injury.
  • Page 7 Basic Safety Instructions Electrical safety If the information on electrical safety is not observed either at all to the extent necessary, electric shock, fire and/or serious personal injury or death may occur. 1. Prior to switching on the product, always ensure that the nominal voltage setting on the product matches the nominal voltage of the AC supply network.
  • Page 8 Basic Safety Instructions 14. Use suitable overvoltage protection to ensure that no overvoltage (such as that caused by a bolt of lightning) can reach the product. Otherwise, the person operating the product will be exposed to the danger of an electric shock. 15.
  • Page 9 Basic Safety Instructions Repair and service 1. The product may be opened only by authorized, specially trained personnel. Before any work is performed on the product or before the product is opened, it must be disconnected from the AC supply network.
  • Page 10 Informaciones elementales de seguridad 2. Handles on the products are designed exclusively to enable personnel to transport the product. It is therefore not permissible to use handles to fasten the product to or on transport equipment such as cranes, fork lifts, wagons, etc. The user is responsible for securely fastening the products to or on the means of transport or lifting.
  • Page 11 Informaciones elementales de seguridad 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 12 Informaciones elementales de seguridad Palabras de señal y su significado En la documentación del producto se utilizan las siguientes palabras de señal con el fin de advertir contra riesgos y peligros. PELIGRO identifica un peligro inminente con riesgo elevado que provocará...
  • Page 13 Informaciones elementales de seguridad Seguridad eléctrica Si no se siguen (o se siguen de modo insuficiente) las indicaciones del fabricante en cuanto a seguridad eléctrica, pueden producirse choques eléctricos, incendios y/o lesiones graves con posible consecuencia de muerte. 1. Antes de la puesta en marcha del producto se deberá comprobar siempre que la tensión preseleccionada en el producto coincida con la de la red de alimentación eléctrica.
  • Page 14 Informaciones elementales de seguridad 12. Si un producto se instala en un lugar fijo, se deberá primero conectar el conductor de protección fijo con el conductor de protección del producto antes de hacer cualquier otra conexión. La instalación y la conexión deberán ser efectuadas por un electricista especializado. 13.
  • Page 15 Informaciones elementales de seguridad 5. Ciertos productos, como p. ej. las instalaciones de radiocomunicación RF, pueden a causa de su función natural, emitir una radiación electromagnética aumentada. Deben tomarse todas las medidas necesarias para la protección de las mujeres embarazadas. También las personas con marcapasos pueden correr peligro a causa de la radiación electromagnética.
  • Page 16 Informaciones elementales de seguridad 6. En caso de falta de estanqueidad de una celda, el líquido vertido no debe entrar en contacto con la piel ni los ojos. Si se produce contacto, lavar con agua abundante la zona afectada y avisar a un médico.
  • Page 17 Sicherheitshinweise Kundeninformation zur Batterieverordnung (BattV) Dieses Gerät enthält eine schadstoffhaltige Batterie. Diese darf nicht mit dem Hausmüll entsorgt werden. Nach Ende der Lebensdauer darf die Entsorgung nur über eine Rohde&Schwarz-Kundendienststelle oder eine geeig- nete Sammelstelle erfolgen. Safety Regulations for Batteries (according to BattV) This equipment houses a battery containing harmful sub- stances that must not be disposed of as normal household...
  • Page 18 Customer Information Regarding Product Disposal The German Electrical and Electronic Equipment (ElektroG) Act is an implementation of the following EC directives: • 2002/96/EC on waste electrical and electronic equipment (WEEE) and • 2002/95/EC on the restriction of the use of certain hazardous substances in e lectrical and electronic equipment (RoHS).
  • Page 19 Qualitätszertifikat Certified Quality System ISO 9001 Certificate of quality Certified Environmental System Certificat de qualité ISO 14001 Sehr geehrter Kunde, Dear Customer, Cher client, Sie haben sich für den Kauf eines You have decided to buy a Vous avez choisi d’acheter un pro- Rohde &...
  • Page 20 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 21 R&S DST200 1 Safety Instructions This R&S DST200 RF Diagnostic Chamber has been designed and tested in accordance with the EC Certificate of Conformity and has left the manufacturer’s plant in a condition fully complying with safety standards. General safety instructions To maintain this condition and to ensure safe operation, you must observe all instructions and warnings given in this manual.
  • Page 22 DST200 2 Short Description The RF Diagnostic Chamber R&S DST200 is a fully enclosed, RF-shielded anechoic chamber for interference-free and reflection-free tests of mobile phones (MS) and other devices with radio interfaces. R&S DST200 is particularly suited for over-the-air (OTA) performance tests and receiver sensitivity degradation (desense) tests in line with the CTIA, CWG and PTCRB standards.
  • Page 23 ® Short Description R&S DST200 Positioning the RF Diagnostic Chamber Fig. 2-1: RF Diagnostic Chamber with accessories 2.1 Positioning the RF Diagnostic Chamber The RF Diagnostic Chamber is intended for operation on a flat, stable surface. Apply one of the following methods to ensure a stable position: ●...
  • Page 24 ® Short Description R&S DST200 Opening and Closing the Front Door Fig. 2-2: Position of balancing weight In view of its weight (see data sheet), at least two persons are required to carry the RF Diagnostic Chamber using the four handles on both side walls. If you wish to remove the balancing weight for easier transport, open the two screws on either side and remove it from the slot.
  • Page 25 ® Short Description R&S DST200 Connecting the EUT and the Test Equipment DST-S100B, order no. 1515.1396.03). The two selections are symmetric to each other; figure 2-2 shows a door with a left-hand mounting (hinges on the left side). To open the front door, 1.
  • Page 26 Measurement", on page 28. ● The "DST200 Filter Panel, USB" can be used for USB data connections to the EUT. An integrated low-pass filter ensures high shielding effectiveness of the USB con- nector. Use shielded USB cables according to standard USB 2.0 to establish the connection to the EUT and an external controller.
  • Page 27 Certification, Test Plan for Mobile Station Over the Air Performance, Method of Mea- surement for Radiated RF Power and Receiver Performance, Rev. 3.0". The 3D Positioner replaces the EUT table in the R&S DST200. The EUT is fixed along the central axis of the EUT holder as shown below.
  • Page 28 ® Short Description R&S DST200 Elevated EUT Table Fig. 2-4: Rectangular and spherical coordinates for the 3D positioner If the positioner is turned such that both angles are zero (θ = φ = 0°), then the EUT is oriented vertically (along the z-axis), and its face points in +x-direction.
  • Page 29 R&S DST200 product brochure, no. PD 5214.3600.12. The EUT table is mounted on top of the lower EUT table (supplied with every chamber) as shown below.
  • Page 30 ® Test Scenarios R&S DST200 Desense and Self-Interference Tests 3 Test Scenarios The basic test setup for receiver and transmitter tests in an interference-free and reflec- tion-free environment is shown below. The equipment under test (typically, a mobile sta- tion, but also any other device with a radio interface) is placed on the EUT table inside the RF Diagnostic Chamber.
  • Page 31 ® Test Scenarios R&S DST200 Desense and Self-Interference Tests Fig. 3-2: GSM desense test Coexistence tests The following figure shows a test setup for a Bluetooth® / GSM coexistence test with the RF Diagnostic Chamber and two radio communication testers. The R&S CBT Blue- ®...
  • Page 32 ® Path Loss Measurement R&S DST200 4 Path Loss Measurement RF signals are attenuated on their way from the equipment under test (EUT) to the test instrument and back. The total path loss in either direction includes the contribution of...
  • Page 33 ® Path Loss Measurement R&S DST200 Input Path Loss Path loss and EUT type, EUT position The path loss values depend on the EUT type. Results for a particular EUT (e.g. a mobile phone) type should be determined using a fully functional and proven device ("golden"...
  • Page 34 R&S CMW settings may have to be adjusted. 1. Connect the N connector of your RF Diagnostic Chamber R&S DST200 to the bidir- ectional RF connector RF 1 COM of the R&S CMW, preferably using the high-quality RF cable supplied with the RF Diagnostic Chamber.
  • Page 35 ® Path Loss Measurement R&S DST200 Determining Path Loss Values: R&S CMW When the R&S CMW shows the connection status "Network Entry Completed", press the "MS Channel Report" softkey. 2. Open the "Results > MS Channel Report" section in the measurement dialog and read the "UL TX Power (Data Carrier Power)"...
  • Page 36 ® Path Loss Measurement R&S DST200 Determining Path Loss Values: R&S CMW 4.3.3 Output Path Loss Determining the output path loss requires the "WiMAX Signaling" firmware application only. 1. Access the "WiMAX Signaling" firmware application and establish a connection between the R&S CMW and the MS, using default settings.
  • Page 37 ® Path Loss Measurement R&S DST200 Determining Path Loss Values: R&S CMW measured network standard. After the R&S CMW has established a connection with the EUT, the reported EUT output power is displayed in the measurement dialog of the sig- naling application.
  • Page 38 ® Path Loss Measurement R&S DST200 Determining Path Loss Values: R&S CMW User Manual 1515.1421.02 ─ 01...
  • Page 39 GSM mobile phone and a WCDMA UE. 4.4.1 Preparatives (GSM or WCDMA) 1. Connect the N connector of your RF Diagnostic Chamber R&S DST200 to the bidir- ectional RF connector RF 2 of the R&S CMU200, preferably using the high-quality RF cable supplied with the RF Diagnostic Chamber.
  • Page 40 ® Path Loss Measurement R&S DST200 Determining Path Loss Values: R&S CMU200 A PCL 15 for a GSM900 mobile phone corresponds to a nominal transmitter output power of 13 dBm. For more information refer to your operating manual for the GSMxxx-MS software options (R&S CMU-K20/-K21/-K22/-K23/-K24...), stock no.
  • Page 41 ® Path Loss Measurement R&S DST200 Determining Path Loss Values: R&S CMU200 Fig. 4-10: GSM900 Signaling: RF IN/OUT tab 4.4.3 WCDMA Path Loss 1. For a WCDMA UE, access the "WCDMA UE" function group, "Signaling" test mode, to establish a call between the R&S CMU200 and the UE. Note the power class (1 to 4) of your UE, which is displayed in the "Connection"...
  • Page 42 ® Path Loss Measurement R&S DST200 Determining Path Loss Values: R&S CMU200 Fig. 4-11: WCDMA Signaling: UE Report dialog 3. To determine the output path loss of your mobile phone, subtract the reported "CPICH RSCP" of the current cell from the P-CPICH output level of the R&S CMU ("BS Signal Lvl.
  • Page 43 ® Path Loss Measurement R&S DST200 Determining Path Loss Values: R&S CMU200 Fig. 4-12: WCDMA Signaling: Maximum Power dialog 5. To determine the input path loss of your UE, subtract the measured "UE Power (RMS)" (preferably, the "Average" value) from the nominal maximum UE transmitter output power.
  • Page 44 ® Reference Path Loss Measurement R&S DST200 Background 5 Reference Path Loss Measurement Over-the-air (OTA) measurements attempt to determine the performance of radio trans- mitters and receivers in a test environment which closely simulates the conditions in which the devices will be used. OTA tests for mobile phones have been promoted and specified by the Cellular Telecommunications &...
  • Page 45 ® Reference Path Loss Measurement R&S DST200 Measurement Fig. 5-1: Schematic test setup for reference path loss measurement In practice, the ideal isotropic radiator is replaced by a calibrated reference antenna. The (known) gain of the reference antenna G is defined as the difference between the antenna's actual radiated power and the ideal isotropic power, hence: –...
  • Page 46 ® Reference Path Loss Measurement R&S DST200 Measurement Fig. 5-2: VNA test setup for cable calibration Transmission measurement Apply the calibration and connect the cable ends to the input connector of the reference antenna and the RF ANT connector of the RF Diagnostic Chamber. Measure the forward...
  • Page 47 ® Reference Path Loss Measurement R&S DST200 Generic RF Parameters 5.3 Generic RF Parameters table 5-1 below, measured antenna factors AF, reference path loss values PL, and transducer factors TRD are listed in a frequency range between 700 MHz and 18 GHz.
  • Page 48 The values in table 5-1 are generic values collected in a specific R&S DST200 sample measurement. To obtain the values specific for your RF Diagnostic Chamber, use a cali- brated reference antenna and perform the reference path loss measurement as descri- bed in chapter 5.2,...
  • Page 49 55.9 49.0 47.5 23.0 24.6 18.00 56.2 49.4 46.5 23.2 25.9 A more complete set of RF parameters in a numeric ASCII format is available on the R&S DST200 product pages on the R&S internet. User Manual 1515.1421.02 ─ 01...
  • Page 50 ® Maintenance R&S DST200 6 Maintenance The outside of the RF Diagnostic Chamber can be cleaned sufficiently using a soft, lint- free dust cloth. Shielding gaskets at the front door The front door and the EMI/EMC shielding gaskets around the door joint must be inspec- ted at regular intervals.
  • Page 51 ® Installation, Repair, Functional Check R&S DST200 Accessing the Upper Compartment 7 Installation, Repair, Functional Check The subjects in this chapter are not relevant for normal use of the RF Diagnostic Cham- ber. Read the information if you wish to mount optional accessories, replace expendable parts, or check the operability and the rated specifications.
  • Page 52 7-1. 7.3 Mounting Filter and Interface Panels The RF Diagnostic Chamber R&S DST200 is delivered with integrated test antenna. The N-connector unit labeled RF ANT ensures the RF connection between the antenna and the external test equipment; it always occupies the connector port at the top of the right-...
  • Page 53 DST200 Replacing the Shielding Gaskets Fig. 7-1: Example of a connector unit (DST200 Filter Panel, USB) To connect the additional feed throughs to the antenna or to the EUT, you will usually have to access the upper and/or lower compartments of the RF Diagnostic Chamber.
  • Page 54 "Maintenance", on page 34. 7.5 Functional Check The technical data of the RF Diagnostic Chamber R&S DST200 and the test antenna are listed in the data sheet. To check compliance with the rated VSWR specifications of the antenna, you can use one of the following measurement devices: ●...
  • Page 55 ® Installation, Repair, Functional Check R&S DST200 Expendable Parts Table 7-1: List of expendable parts Part designation Stock no. Remarks FEEDTHROUGH PANEL BLIND 1514.2101.00 chapter 7.3, "Mounting Filter and Interface Panels", on page 36 EUT TABLE 1514.7655.00 chapter 7.2, "Accessing the Lower Compartment", on page 35...
  • Page 56 ® Glossary R&S DST200 Glossary AF: Audio frequency or antenna factor CTIA: Cellular Telecommunications & Internet Association CWG: Converged Wireless Group DC: Direct current EMI: Electromagnetic Interference EMS: Electromagnetic Susceptibility EUT: Equipment under test MS: Mobile phone, mobile station OTA: Over-the-air (tests)
  • Page 57 Antenna (spare part) ............38 Options Antenna cable SMA-N ............38 3D Positioner (R&S DST-B150) ......... 11 DST200 Filter Panel, LP&FO ........6 DST200 Interface Panel, RF ........6 Cable calibration .............. 29 Elevated EUT Table (R&S DST-B130) ...... 12 Cellular Telecommunications &...
  • Page 58 ® Index R&S DST200 WCDMA tests ..............25 WiMAX tests ..............18 User Manual 1515.1421.02 ─ 01...