Anritsu MS2781B
Signature Signal Analyzer, 100 Hz - 8 GHz

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Product Overview

The Anritsu MS2781B Signal Analyzer is specifically designed for WiMAX, WCDMA, HSDPA / HSUPA and QAM / PSK measurements. Simulation and analysis tools such as MATLAB® and Simulink® operate seamlessly with analyzer measurements in the first open Windows environment for a signal analyzer. Built-in “Smart” measurements and personalities for Phase Noise, WiMAX, WCDMA/HSDPA/HSUPA, and QAM/PSK Modulation Analysis ease measurements on complex signals. Engineers can now easily move between simulation, measurement and analysis to support development of new or proprietary communication systems using the Anrtisu MS2781B.

Feature highlights of the MS2781B analyzer include:

• Fundamentally mixed, single band architecture covers 100 Hz to 8 GHz.
• Capture and analyze complex modulated signals with up to 50 MHz bandwidth.
• Use the touch-screen display to perform “smart” measurements by pressing a single button on the front panel.
• Access any function in the intuitive Windows XP Professional environment.
• +22 dBm TOI
• –157 dBm DANL
• 0.65 dB amplitude accuracy

Phase Noise measurements can be completed with option 52. Measure the phase noise at one offset frequency using markers in Spectrum display or measure phase noise versus offset frequency with a graphical display. The offset range, sweep type (FFT or swept), and amount of averaging are all adjustable by decade. Multiple measurements can be overlaid, in color, to help compare device performance under various conditions such as carrier frequency, bias voltage, or temperature.

Advanced analysis capabiltiy is available with option 40: MATLAB® and Simulink®. Applications such as measuring chirp frequency linearity, or EVM versus power can be addressed with just a few lines of MATLAB code.

In addition to high performance spectrum analysis, Signature can analyze a wide variety of digitally modulated signals without the need for a separate computer. Gain insight into your transmitter with the powerful analysis in Signature.

• WCDMA/HSDPA/HSUPA Measurements:
  • Gain insight into your WCDMA device by making modulation quality measurements. With Option 30, you can make Code Domain Power, EVM versus time, Constellation Diagram, Composite EVM and many other measurements at the touch of a button. A simplified interface gives accessible insight, while retaining all the power you expect in a high performance signal analyzer. RF measurements of Channel Power, ACLR (Adjacent Channel Leakage power Ratio), Multi-carrier Channel Power, CCDF (Complementary Cumulative Distribution Function), and Spectrum Masks are also available to help you understand the RF performance of your device.
• QAM/PSK Modulated Signals
  • Option 38, General Purpose QAM/PSK Modulation Analysis, allows you to select the symbol rate, modulation type, and filtering methods to demodulate captured signals. Symbol table, constellation, and vector diagrams allow viewing of the data stream. Standard measurements are available to measure EVM, carrier leakage and I/Q imbalance.
• WiMAX and WiBro Measurements
  • Insight into your WiMAX or WiBro device is just a few button pushes away. With option 41, you can make modulation quality measurements such as Relative Constellation Error (RCE), IQ Offset and Carrier Frequency Offset, as well as display Constellation diagrams and RCE versus sub-carrier or symbol.
• Advanced Connectivity:
  • The Anritsu MS2781B offers an unprecedented range of connectivity options to support modern design and manufacturing environments including:
    • GPIB
    • USB
    • Ethernet
    • Web-based automation
    • Web-based Operation

Specifications of the Anrtisu MS2781B Signal Analyzer include:

• Frequency Range: 100 Hz to 8 GHz
• Resolution Bandwidths: 0.1 Hz to 8 MHz
• 1 GHz Phase Noise:
  • <–116 dBc/Hz at 100 kHz
  • <–142 dBc/Hz at 5 MHz
• Amplitude Accuracy:TOI: >+22 dBm
• DANL: <–167 dBm at 1 GHz (0.1 Hz RBW)
• WCDMA and HSDPA/HSUPA Modulation Analysis (Option 30 required)
  • Composite EVM:
    • Floor 1%
    • Uncertainty: 2%
  • Link Direction: Downlink and Uplink
  • Code Domain Power:
    • Floor: -50 dB
    • Uncertainty: 0.1 to 0.3 dB
  • Modulation Measurements:
    • EVM (RMS, Peak, and Peak Position)
    • Magnitude and Phase Error
    • IQ Offset, Carrier Frequency Offset
    • Scramble Code (automatically determined)
    • Channel Power (with or without RRC filtering)
    • Primary, Secondary, and Total Sync Channel (SCH) Power
    • Peak Code-Domain Error (PCDE)
    • Bitstream
  • Modulation Graphs:
    • Constellation, Vector Diagrams
    • Power, EVM, Magnitude Error, Phase Error, all versus Time
    • Eye Diagrams
    • Code-Domain Power (with and without Zoom)
    • Code-Domain Error (with and without Zoom)
  • RF Measurements:
    • Channel Power
    • ACLR
    • Multi-Carrier Power
    • Occupied Bandwidth
    • CCDF
    • Spectrum Masks
• QAM/PSK Digital Modulation (option 38 required):
  • EVM:
    • 1.25% 0.1 to 6 MHz
    • 2% 6 to 15 MHz
    • 2.5% 15 to 20 MHz
• WiMAX and WiBro Modulation Analysis Mobile and Fixed RCE (EVM) (option 41 and 22 required): 46 dB
• Phase Noise Measurement (option 52 required):
  • Offsets: 10 Hz to 100 MHz
• Operating System: Windows XP Professional