Solartron Analytical – Frequency Response Analyzer (Model:1255B)

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The 1255B Frequency Response Analyzer is one of a range of instruments that will meet your needs today and in the future.

Using the single sine technique the 1255B provides precise measurement of gain and phase between any two points in a system.  This fully digital technique is used to assess the performance of both simple and complex systems – mechanical, electronic and electrochemical.

For over 30 years Solartron Analytical have produced frequency response analyzers, instruments which are regarded throughout the world as industry standards. This unsurpassed knowledge and experience has been used to produce the 1255B, with its 1MHz frequency range and 1 in 65 million frequency resolution.

The 1255B Frequency Response Analyzer applies the power and sophistication of modern measurement technology; simple in concept, fast and precise in performance, and so easy to use, even by non-technical personnel.   

Measurement of impedance has become an important tool in the study of electrochemical/biological phenomena and material properties.  The 1255B together with a potentiostat such as 1287 can be used in a wide range of applications, including:

  • Corrosion and corrosion protection
  • Properties of organic and inorganic coatings and films
  • Development of solid electrolytes for oxygen sensors
  • Development of novel anode/cathode materials and electrolytes
  • Studies of animal and plant tissue properties
  • Photoelectric effects

Materials Testing
When combined with a 1296 Dielectric Interface and temperature test equipment the 1255B can be used to test a wide range of materials, such as:

  • Supercapacitor/fuelcell electrochemistry
  • Relaxation processes in the molecular dynamics of liquid crystals, polymers and liquids
  • Charge transport in semiconductors, organic crystals, ceramics etc.
  • Analysis of chemical reactions, polymerization and curing processes
  • Novel gas and liquid sensors
  • Characterization of insulating and semiconductor materials
  • Quality control in the production of insulators, printed circuit boards, etc.

Electronic Testing
1255B is ideally suited to a wide variety of applications in the field of electronics – from fundamental aspects, such as the characterization of the electrical and mechanical properties of materials, to the development and testing of components and complete circuits.

Generally these applications require the measurement of transfer functions and group delay over a wide frequency range. In the case of filters, a wide dynamic range coupled with high frequency resolution are also needed to enable the attenuation characteristics to be full defined. 


Waveform Sine
Frequency range: 10µHz to 1MHz, max resolution: 10µHz
error: ±100ppm, stability (24hrs, ±1ºC): 10ppm
Amplitude ≤10MHa: 0 to 3V rms, >10MHa: 0 to 1V rms
Resolution 5mV
Error (driving open circuit) ±(5% + 1% / MHz + 5mV)
Distortion <2%
Sweep types frequency (logarithmic and linear), amplitude (linear) dc bias )linear)
Resolution frequency: >10000points, amplitude:>200points
dc Bias
Range -40.95V to +40.95V
Resolution 10mV
Error (driving open circuit) ±1%±10mV
Max. Current ±100mV
Max. Voltage (lo to ground) ±0.4V
Impedance output: 50Ωµ1%, lo to ground: 100Ω, <10nf
Connection single BNC, outer floating to ±0.4V
Output is short circuit proof

Two independent analyzers operating in parallel.


(dynamic range)

Full scale
peak input

Com. Mode


1µV (90dB)




10µV (90dB)




100µV (90dB)



Input protected to ±46V peak
Coupling dc or ac (-3dB at 1Hz)
Impedance Hi to outer: 1MΩ ±2%, <35pF
Outer to ground (floating): 10kΩ, <330pF
Common mode rejection
at 1MHz)
Cross-channel isolation
(at 1MHz)
Integration time 0.01s to 105s, or auto
Measurment delay 0 to 105s
This is a remotely controlled instrument which can only be configured via software
Power supply 90 to 126V, 198 to 252V, ac, 48 to 65 Hz
Consumption 200VA
Dimensions (w x h x d) 432mm x 176mm x 573mm (17in x 6.93in x 22.56in)
Weight 18kg (40lbs)
Operating temp. range 0 to 50ºC (32 to 122ºF)

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