R&S®TS8970 Mobile WiMAX™ RCT

RX/TX test system in line with WiMAX MRCT test specification

  • 개요

Key Facts

  • R&S®TS8970 was developed in response to a request for proposals from the WiMAX Forum®
  • Frequency range from 2 GHz to 6 GHz or optionally from 400 MHz to 6 GHz, prepared for future Mobile WiMAX profiles in the 700 MHz and 1.8 GHz band classes

Brief Description

The R&S®TS8970 is the reference tool of choice for the RF characterization of Mobile WiMAX products. Many of the WiMAX Forum® Designated Certification Labs (WFDCL) successfully rely on the R&S®TS8970 in their certification work.

Features

  • Combining the features market-leading products from Rohde & Schwarz
  • Future-ready concept
  • From pre-sale to service. At your doorstep.

Specifications

Common data
Overall frequency range depends on type of ISSCU2X2 ordered 400.0 MHz to 6.0 GHz or 2.0 GHz to 6.0 GHz

Supported Technologies

  • ODFMA
  • MIMO

Key Facts

  • R&S®TS8970 was developed in response to a request for proposals from the WiMAX Forum®
  • Frequency range from 2 GHz to 6 GHz or optionally from 400 MHz to 6 GHz, prepared for future Mobile WiMAX profiles in the 700 MHz and 1.8 GHz band classes
  • BS and MS test cases can be run using the same system
  • Unsurpassed measurement accuracy and highly detailed result reports
  • Minimization of downtime owing to two-year calibration interval1) for the system and its components

1) Does not apply in ISO 17025-certified environments (one-year interval).

Brief Description

The R&S®TS8970 is the reference tool of choice for the RF characterization of Mobile WiMAX products. Many of the WiMAX Forum® Designated Certification Labs (WFDCL) successfully rely on the R&S®TS8970 in their certification work. The test system has also become a lab favorite in the precertification of products at manufacturers of WiMAX infrastructure and mobile stations. Owing to the complexity of the simulation of MIMO channels, the R&S®TS8970 is also frequently used in the WiMAX R&D lab.

The R&S®TS8970 enables users to test a Mobile WiMAX base station (BS) or a Mobile WiMAX mobile station (MS) and is available as a combined system with BS/MS switchover. The test cases offered reflect the current version of the WiMAX Forum® Mobile WiMAX Radio Conformance Test (MRCT) specification.

Features & Benefits

  • Combining the features market-leading products from Rohde & Schwarz
    • R&S®AMU200A baseband signal generator and fading simulator
    • R&S®SMU200A vector signal generator
    • R&S®FSL spectrum analyzer
    • R&S®FSQ vector signal analyzer
    • R&S®NRP power meter
    • R&S®PASS user interface
    • R&S®TS-EX-IQ2 baseband digital combiner unit
  • Future-ready concept
    • Orthogonal frequency division multiplex access (OFDMA) methods
    • Multi-antenna transmission and/or reception (MIMO technology)
    • Upgradeable to cover 3GPP Long Term Evolution (LTE)
  • From pre-sale to service. At your doorstep.

    Worldwide network of local Rohde & Schwarz experts in over 70 countries:

    • System support worldwide
    • Hotline service
    • Repair service
    • Software service
    • Report database
    • Calibration service
    • After-warranty service
  • Long calibration intervals and built-in RFC routines maximize uptime and contribute to very high accuracy

    A full 12 months is the recommended calibration interval for the R&S®TS8970. However, every component in the test system is specified for a two-year or longer calibration cycle. This permits many R&S®TS8970 users1) to determine the optimum calibration period based on individual requirements. The ultimate customer benefit of this long calibration interval is an absolute minimum in downtime.

    1) Does not apply in ISO 17025-certified environments (one-year interval).

Specifications

The R&S®TS8970 RF conformance test system complies with the requirements stipulated in V3.0b of the MRCT specification for the test cases described in this document.

Specifications are applicable for a calibrated R&S®TS8970 system under normal operating conditions after RF calibration and two hours of warm-up at ambient temperature.

The performance of the R&S®TS8970 is based on the technical specifications1) of the individual instruments and components within the system. The uncertainties for the R&S®TS8970 system are described in the document "R&S®TS8970_2_Uncertainty_Calculations".

The uncertainty is calculated and made available individually for each test case. The values listed apply at the DUT port(s) of the R&S®TS8970.

They have been calculated in line with the following:

  • Guide to the Expression of Uncertainty in Measurement (GUM) – produced by ISO/TAG4/WG3 (1995)
  • ETSI TR 100 028-1 V1.4.1 (2001-12)
  • ESTI TR 102 273-1-1 V1.2.1 (2001-12)
  • Application Note (1GP43) – Program for Measurement Uncertainty Analysis with Rohde & Schwarz Power Meters
Overview of technical specifications for devices used in the system
R&S®FSL Spectrum Analyzer PD 0758.2790.22
R&S®FSQ Vector Signal Analyzer PD 0758.0945.22
R&S®FSQ-K92/-K93/-K94 WiMAX, WiBro Application Firmware PD 5214.1289.22
R&S®NRP Power Meter in R&S®SMART SENSOR TECHNOLOGY PD 0757.7023.21
R&S®SMU200A Vector Signal Generator PD 0758.0197.22
R&S®AMU200A Baseband Signal Generator and Fading Simulator PD 5213.7954.22
R&S®SMU200A, R&S®SMATE200A, R&S®SMJ200A, R&S®AMU200A Digital Standards for R&S®SMU200A, R&S®SMATE200A, R&S®SMJ200A, R&S®AMU200A PD 5213.9434.22
R&S®OSP Open Switch and Control Platform PD 5213.9928.22
(data sheet)
PD 5214.1437.12
(product brochure)
R&S®TS-EX-IQ2 Baseband Digital Combiner Unit PD 5214.1766.22
Common data
Overall frequency range depends on type of
ISSCU2X2 ordered
400.0 MHz to 6.0 GHz or 2.0 GHz to 6.0 GHz
Maximum DUT cable loss 3.5 dB
DUT TX1/RX1 and DUT TX2/RX2
Maximum output power 0 dBm (PEP)2)
Maximum input power +43 dBm
Nominal source impedance 50 Ω
VSWR (max.) in 50 Ω system f ≤ 3 GHz 1.2 : 1
3 GHz < f ≤ 6 GHz 1.3 : 1
Connectors precision N, female
DUT TX
Maximum input power +43 dBm
Nominal input impedance 50 Ω
Connector precision N, female
Reference
Maximum output power –10 dBm (PEP)2)
Nominal source impedance 50 Ω
VSWR (max.) in 50 Ω system f ≤ 3 GHz 1.2 : 1
3 GHz < f ≤ 6 GHz 1.3 : 1
Connector precision N, female
Interfaces
Remote control Ethernet, USB, RS-232-C
Reference rubidium frequency output 10 MHz
Operating data
Mains power supply and consumption
Phase 2 × single phase (L + N + PE)
Voltage 115 V to 230 V ±6 %
Frequency 47 Hz to 63 Hz
Circuit breaker, rating 2 × 16 A
Circuit breaker, type C
Mains connector 2 × CEE7 (Schuko)
Consumption max. 3.5 kVA
General data
Environmental conditions
Storage temperature range 0 °C to +40 °C
Maximum output power +23 °C ± 3 °C
Operating temperature range +43 dBm
Operating temperature after
RF calibration 3) 4)
±2 °C around temperature during RFC
Relative humidity, non-condensing 20 % to 80 %
Electrical safety 5)
Measurement equipment IEC 1010-1, EN 61010 part 1,
VDE 0411 part 1
IT equipment IEC 950, EN 60950/VDE 0805
EMC
Emission EN 55011 group I class
B/EN 55022 class B
Immunity EN 61326/EN 55011
Dimensions (W × H × D) 1200 mm × 2000 mm × 800 mm
47.2 in × 78.7 in × 31.5 in)
Weight approx. 500 kg (1102 lb),
depending on specific configuration

1) See table “Overview of technical specifications for devices used in the system”.

2) PEP = peak envelope power.

3) Air conditioning is strongly recommended.

4) The performance of RF calibration (RFC) on a yearly basis is recommended. RFC is independent of the requirement to perform individual device calibrations.

5) The protective conductor current for instruments must not exceed 3.5 mA. When several instruments are integrated into a test system, this limit value may be exceeded. In this case, make sure that the system is additionally grounded or is connected only via an IEC 60309-compliant connector.

Supported Technologies

Orthogonal frequency division multiple access (ODFMA) methods

With OFDMA transmission technology, multiple signals are transmitted simultaneously on a large number of carriers that are spaced at precise frequency intervals. OFDMA benefits include higher spectral efficiency, resilience to RF interference and reduced requirements with regard to power control accuracy. For a MIMO application, the critical benefit of OFDMA is its inherent robustness against fast multipath fading.

OFDMA methods are an essential part of almost all new transmission methods that are in the planning or implementation phase. The generators and analyzers in the R&S®TS8970 allow users to enable standards not based on IEEE 802.16e-TDD by means of key codes. The structure of the R&S®PASS user interface allows users to program their own test scenarios for further OFDM-based wideband applications.

Multi-antenna transmission and/or reception (MIMO technology)

Earlier generations of mobile communications systems concentrated on manipulating the usage of both frequency and time to maximize data throughput. The variations caused by multiple signal paths were regarded as a disadvantage (“fading”) to be minimized. With the benefits of today’s higher computing power, multiple-input, multiple-output(MIMO) antenna technology deliberately uses multiple signal paths to transmit data more reliably and/or to increase data throughput. The R&S®TS8970 permits the simulation of 2x2 MIMO scenarios as defined in the MRCT specification and is prepared for higher order MIMO.

  • ODFMA
  • MIMO
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