R&S®EX-IQ-Box Digital Signal Interface Module

Key Facts

  • Conversion of digital I/Q signals to and from the device under test
  • Flexible user-defined digital I/Q interface settings
Down to Key Facts

Brief Description

The R&S®EX-IQ-Box is a digital interface module that provides flexible digital baseband inputs or outputs for signal generators, signal analyzers and communications testers from Rohde & Schwarz.

Features & Benefits

  • General Features
  • Digital Interface Protocol User Defined
  • Digital Interface Protocol CPRI

Key Facts

  • Conversion of digital I/Q signals to and from the device under test
  • Flexible user-defined digital I/Q interface settings
  • Two breakout boards included (single-ended, differential connectors) for connection of the device under test
  • Easy interface configuration via enclosed R&S®DigIConf software
  • Transient recorder in R&S®DigIConf for visual control of generated digital signals
  • Optional support for CPRI

Brief Description

The R&S®EX-IQ-Box is a digital interface module that provides flexible digital baseband inputs or outputs for signal generators, signal analyzers and communications testers from Rohde & Schwarz. The main application field of this device is the conversion of digital I/Q signals of R&S instruments into user defined or standardized digital signal formats and vice versa.

For applications with user defined protocols the R&S®EX-IQ-Box enables either serial or parallel transmission of I/Q signals to a DUT, including variable clock modes, various data rates as well as different logical signal levels. The connection to the device under test is done in a straight-forward approach via adapter boards (=breakout boards) that are plugged directly to the R&S®EX-IQ-Box.

In applications with standardized protocols, the R&S®EX-IQ-Box provides not only the I/Q data, but also control information of the respective standard. Equipped with the corresponding options, the R&S®EX-IQ-Box supports the standardized interface protocols CPRI (common public radio interface), which defines an interface for the transmission of I/Q and control data between the baseband and RF module of a base station.

The parameters can conveniently be set via the R&S®DigIConf digital interface configuration software.

When equipped with the R&S®EX-IQ-Box, a Rohde & Schwarz vector signal generator delivers realistic digital baseband signals for testing digital transceivers or other components. It can thus cover all common state-of-the-art standards such as LTE, WiMAX and 3GPP including HSPA, as well as user-defined signals and effects such as fading, AWGN or I/Q impairments. The R&S®EX-IQ-Box plus a signal analyzer from Rohde & Schwarz enable the reliable analysis of digital baseband components. As an accessory for a Rohde & Schwarz communications tester, the R&S®EX-IQ-Box acts as a versatile digital baseband interface for signal generation and signal evaluation.

Features & Benefits

  • General Features

    • Digital I/Q interface for signal generators, analyzers and communications testers from Rohde & Schwarz
      • Standard-compliant digital baseband signals
      • Signal generation for all important state-of-the-art standards such as EUTRA/LTE, 3GPP FDD, HSPA, WiMAX, GSM/EDGE, etc. (together with the R&S®SMW200A or R&S®SMBV100A)
      • Versatile signal processing functionalities, including AWGN generation and I/Q impairments (together with the R&S®SMW200A or R&S®SMBV100A)
      • Fading simulation (together with the R&S®SMW200A)
      • Simple and flexible conversion of digital baseband signals into analog IF or RF signals (together with the R&S®SMW200A or R&S®SMBV100A)
      • Vector signal analysis of digital baseband signals of all important modern standards such as EUTRA/LTE, 3GPP FDD, HSPA, WiMAX, GSM/EDGE, etc. (together with the R&S®FSW, R&S®FSQ, R&S®FSV, R&S®FSVR)
      • State-of-the-art test solution for wideband radiocommunications tests at the digital baseband interface of components (together with the R&S®CMW500)
    • Variable signal interface
      • LVTTL, CMOS and LVDS logic standards
      • Two breakout boards included (single-ended, differential connectors) for connection of the device under test
    • Easy interface configuration via enclosed R&S®DiglConf software
    • Future-safe concept allows extension to cover standardized as well as user-defined interface protocols via additional breakout boards
  • Digital Interface Protocol User Defined

    • Flexible data formats
      • Maximum data rate of 100 MHz (200 MHz, variable resampling in conjunction with the connected Rohde & Schwarz instrument
      • Variable word size from 4 to 18 bits for I and Q
      • Parallel and serial formats
      • SDR and DDR data rates
      • Non-interleaved and I/Q and Q/I interleaved formats
      • Selectable bit order and word alignment
      • Two's complement and binary offset representation
      • Negate I and Q data
      • Positive and negative logic
    • Flexible clock generation
      • Maximum clock rate of up to 100 MHz for parallel formats and up to 400 MHz for serial formats
      • Internal and extermal clock reference
      • Selectable clock phase (90° steps) and skew (±5 ns)
  • Digital Interface Protocol CPRI™

    (with R&S®EXBOX-B85 and R&S®EXBOX-K10/-K11 options; only R&S®EX-IQ-Box 1409.5505K04)

    • Test of CPRI radio equipment (RE) with R&S®EXBOX-K10 option
    • Test of CPRI radio equipment control (REC) with R&S®EXBOX-K11 option
    • Predefined interface settings for 3GPP FDD (incl. HSDPA, HSUPA, HSPA+), LTE, WiMAX and CDMA2000 as well as user defined configuration
    • Line bit rates of 1228.8 Mbit/s (=2x), 2457.6 Mbit/s (=4x) and 3072.0 Mbit/s (=5x), 4815.2 Mbit/s (= 8 ×),6144.0 Mbit/s (= 10 ×) and 9830.4 Mbit/s (= 16 ×)
    • Uplink, downlink as well as full-duplex operation
    • Flexible or packed antenna-carrier (AxC) allocation
    • Antenna-carrier (AxC) grouping
    • Vendor specific dataVendor specific data
    • HDLC (high level data link control) supported
    • Control and management (C&M): “fast C&M” (realtime via Ethernet) and “slow C&M” (realtime via HDLC)
    • Easy interface configuration via R&S®DiglConf software
    • CPRI specific breakout board for interfacing with the DUT R&S®EXBOX-B85
      • Support of standard small form factor pluggable (SFP) modules for optical link
      • Additional SMA connectors for simultaneous monitoring of the CPRI output or for supply of the Rx input signal
    • Direct waveform playback from R&S®EX-IQ-Box waveform memory (64 Msample) with R&S®EXBOX-K90 option
    • Multi-waveform playback for simultaneous output of up to 4 waveforms with R&S®EXBOX-K91 option
    • Recording memory (512 Mbyte) for capturing of I/Q data that is received via the CPRI link
      (R&S®EXBOX-K94 option)
    • Support of R&S®WinIQSIM2 waveform creation software

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