1250E Frequency Response Analyzer

215 1250E
The 1250E Frequency Response Analyzer (FRA) delivers accurate measurement of gain and phase. The device under test is stimulated by a sinewave and the response analyzed at various points in the system. These responses are then correlated with the stimulus to determine the amplitude and phase relative to the generator. The ratio of the two measured signals can then be used to provide the system transfer function.

This process rejects all harmonics and, by increasing the integration time to further reject noise and interference, even signals which are buried in noise can be measured accurately.

The 300 V range on the 1250E is particularly useful for making measurements on fuel cell stacks and high voltage batteries, used in hybrid vehicles and residential power supplies. Key product features include:-
  • AC amplitude range - 10 mV to 10 V, for power supply testing
  • Analyzer range 30 mV - 300 V, i.e. suitable for ATS (Automated Test Systems), power station vibration testing
  • Noise rejection capability
  • Synchronizer option enabling generator and carrier signals to be locked to external signals in terms of frequency / phase
  • Ability to analyze non-linear systems (harmonic analysis)
  • Front panel or PC software control
  • Modulator / demodulator option for interfacing to AC carrier systems
Electrochemistry
Measurement of impedance has become an important tool in the study of electrochemical/biological phenomena and material properties.
The 1250E together with a potentiostat such as the 1287A potentiostat/galvanostat, can be used in a wide range of applications, including:-
  • Corrosion and inhibitor studies
  • Analysis of organic and inorganic coatings and films
  • Research into solid electrolytes for oxygen sensors/fuel cells
  • Development of novel anode/cathode materials and electrolytes
  • Bioanalytical research into plant/soil properties
Materials Testing
When combined with a 1296A Dielectric Interface and temperature test equipment the 1250E can be used to test a wide range of materials, such as:-
  • Supercapacitor/battery/fuel cell materials
  • Charge transport in semiconductors, organic crystals, ceramics etc.
  • Analysis of chemical reactions, polymerization and curing processes
  • Novel gas and liquid sensors
  • Characterization of ferro/piezoelectric and semiconductor materials
Control Systems
A standard use for a FRA is to generate a signal which is connected to a signal converter (this may take many forms; e.g. hydraulic, pneumatic or electrical), which forces controlled movement to take place (e.g. displacement transducers used in aerodynamic tests). These are placed on the system under test and the output signal fed back to the FRA via a sensor such as an accellerometer or displacement transducer, enabling the system to be characterized. Typical uses include:-
  • Automated test systems
  • Power supply testing
  • Aircraft instrumentation/system controls
  • Aerodynamic tests - study of applied forces to wing structures
  • Automotive shock absorbers
  • Weapons guidance systems
  • Rocket propulsion and vectoring technology
Synchronizer
The synchronizer option enables the generator to be locked to a rotating / reciprocating component, and measurements can then be made relative to this. Applications include turbine analysis - using harmonics to enable blade crack detection.

Modulator / Demodulator
This optional card allows the user to superimpose an external modulator signal onto the 1250E generator signal which acts as a carrier. This modulation signal can then be demodulated through the analyzer inputs. Applications include telecommunications and automated test systems.
  • Documents +

  • Specifications +


    Generator
    Waveform Sine, square or triangle
    Amplitude 10 mV to 10.23 V rms
    Maximum AC resolution 10 mV
    DC Bias Range ±10.23 V
    Maximum DC resolution 10 mV
    Output impedance 50 Ω ±1%
    Maximum output current ±100 mA peak
    Frequency range 10 µHz to 65 kHz
    Maximum resolution 10 µHz
    Frequency Error: ±100 ppm
    Distortion 2%
    Stability 24 hrs ±1 ºC
    ±10 ppm
    Sweep types Frequency (logarithmic or linear)
    Amplitude (linear)
    DC bias (linear)
    Maximum voltage hi to lo ±46 V peak
    Maximum voltage lo to ground 150V peak
    Maximum current ±100 mA peak
    Impedance lo to ground 100 kΩ // 100 pF
    Connectors
    Rear BNC, floating shield
    Protection Output is short-circuit protected

    Analyzers
    Two independent analyzers operating in parallel

    Range Dynamic range Full Scale Peak Input Common Mode Rejection
    30 mV 1 µV (90 dB) 45 mV 30 V
    300 mV 10 µV (90 dB) 500 mV 30 V
    3 V 100 µV (90 dB) 5 V 30 V
    30 V 1 mV (90 dB) 50 V 500 V
    300 V 10 mV 500 V 500 V

    Inputs protected to ±500 V (300 V rms) hi or lo to ground
    Coupling DC or AC (-1 dB at 2.5 Hz)
    Input impedance hi or low to ground 1 MΩ, 35 pF
    Input impedance shield to ground 1 MΩ, 35 pF
    Cross-channel isolation @ 10 kHz 100 dB (1 kΩ across inputs)
    Measurement delay 0 to 10s
    Connections BNC on rear panel

    Variable Frequency, AC amplitude, DC bias
    Measured parameters Voltage gain, phase, real, imaginary, Z, R, X, Y, G, B, V, I group delay, C, L, Q, D
    Interfaces
    GPIB (IEEE-488) For instrument control
    Power Requirements
    Voltage 90 to 127 VAC, 188 to 265 VAC
    Frequency 45 to 440 Hz
    Power 210 VA
    Dimensions
    Width 432 mm (17")
    Depth 573 mm (22.56")
    Height 176 mm (6.93")
    Weight 18 kg (40 lbs)
    Operating Temperature Range 0 to 50 ºC (32 to 122 ºF)
  • Options +


    560 001 160 National Instruments USB-GPIB Adapter
    31203B Shielded GPIB cable 6' (2 meter)
  • Software +

    • SMaRT Impedance Measurement Software

      • Wide range of materials test AC techniques (impedance, capacitance, admittance, permittivity and Mott-Schottky) for all types of materials including dielectrics, insulators and electronic materials
      • Full support of 12xx materials test products including 1260A Impedance Analyzer and 1296A Dielectric Interface
      • Integrated temperature control including custom designed cryostats and furnaces

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    • ZPlot Software

      • Wide range of potentiostatic and galvanostatic electrochemical techniques, including cyclic voltammetry, galvanic pulse, impedance, AC voltammetry and Mott-Schottky
      • Full support of 12xx series Impedance and Frequency Response Analyzers including 1260A, 1255B, 1252A, 1250E, 1253A
      • Full support of Power Boosters up to 100 V and 100 A for DC and EIS testing of high power batteries/ fuel cells and for anodization and electroplating

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    • ZView Software

      • ZView is the companion EIS data analysis software for ZPlot
      • Multiple display formats (impedance, admittance, capacitance, permittivity and electrical modulus)
      • Comprehensive data analysis capabilities include an extensive library of equivalent circuit data fit models – R, C, L, Warburg, Distributed Elements

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    • CellTest 1470-1455 Software & Firmware Upgrades

      • Wide range of voltage and current controlled battery/fuel cell/supercapacitor test techniques, including charge / discharge, ramps, pulses and impedance (if FRAs are connected).
      • Full support of CellTest multichannel potentiostat products including 1470E, 1470A/1480A
      • Full support of 1455A/1451A for parallel impedance, and 12xx FRAs for multiplexed impedance
      • Power Boosters for DC and EIS testing of high power batteries/ fuel cells and for anodization and electroplating

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    • MultiStat Software

      • Wide range of potentiostatic and galvanostatic test techniques for battery/fuel cell/supercapacitor, including charge/discharge, cyclic voltammetry, galvanic pulse, and impedance (if FRAs are connected).
      • Full support of CellTest multichannel potentiostat products including 1470E, 1470A/1480A
      • Full support of 1455A/1451A for parallel impedance, and 12xx FRAs for multiplexed impedance
      • Power Boosters for DC and EIS testing of high power batteries/ fuel cells and for anodization and electroplating

      Keep Reading

    • Frequency Response Analyzer Software

      • Frequency response / transfer function analysis software
      • Simple set up of experiment parameters including frequency range and AC amplitude
      • Data analysis on multiple displays with cursor facilities and with data export to Microsoft Excel
      • Support of 12xx frequency response analyzers including 1260A Impedance Analyzer (for voltage measurements only – not impedance)

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