HF2IS Impedance Spectroscope
Our Product Philosophy:
The HF2IS is the solution you require for impedance spectroscopy. Two differential measurement units with a wide frequency range and 4 dual-phase demodulators, are matched with the unprecedented accuracy of a 128-bit DSP engine. This instrument satisfies the highest requirements of today’s research laboratories.
HF2IS Key Features
- 2 measurement units with single-ended and differential support
- 1 µHz - 50 MHz analog bandwidth
- 210 MSample/s, 14 bit A/D conversion
- 4 frequencies simultaneously (8 with HF2IS-MF)
- 5 nV/√Hz input voltage noise
- 1 µs - 500 s time constant
- 6 to 48 dB/oct filter slope (1st to 8th order)
- 4x 1 MSample/s, 16 bit, ±10 V auxiliary analog output
- 2x 400 kSample/s, 16 bit, ±10 V auxiliary analog input
- USB 2.0 high-speed host connection
- Included oscilloscope and frequency response sweeper
- Included graphical user interface and driver software: ziControl, ziAPI, ziServer
HF2IS Applications
- Bio-technology & microfluidics
- Semiconductors & engineering
- Electrochemical impedance measurement
- Material science & solid-state physics
- Food quality control
More applications in this section of our website.
All publications using the HF2IS.
HF2IS Available Options
HF2IS-MF Multi-frequency
The multi-frequency option extends your HF2IS and provides powerful flexibility for choosing the input channel, the oscillator frequency, and the filter coefficients for each demodulator independently. It allows for simultaneous demodulation of in total 8 arbitrary frequencies.
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HF2IS-RT Real-time
The real-time option enables you to implement and execute custom real-time algorithms directly inside the HF2IS. Your programs written in C are supported by a rich library and react to inputs in less than 10 microseconds. The timing behavior is inherently reproducible and robust.
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HF2IS-UHS Ultra-high Stability
The ultra-high stability option provides an ovenized quartz-oscillator for excellent phase noise characteristics. The specifications of this oscillator improve the accuracy of the HF2IS data processing ideal for precision critical applications.
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HF2IS Functional Diagram
HF2IS Specifications
| HF Analog Input | |
| analog bandwidth | 1 µHz - 50 MHz |
| input impedance | 50 Ω or 1 MΩ || 20 pF |
| input voltage noise | 5 nV/√Hz |
| input range | ±3.5 V |
| input AC range | ±1 mV to ±1.5 V |
| A/D conversion | 14 bit, 210 MS/s |
| HF Analog Output | |
| analog bandwidth | DC - 50 MHz |
| operating ranges | ±10 mV, ±100 mV, ±1 V, ±10 V |
| signal adder | ±10 V, DC - 50 MHz bandwidth |
| D/A conversion | 16 bit, 210 MS/s |
| Demodulator & Reference | |
| number of demodulators | 4 dual-phase |
| filter time constant | 1 µs - 500 s |
| filter bandwidth | 80 µHz - 220 kHz |
| filter slope | 6, 12, 18, 24, 30, 36, 42, 48 dB/Oct |
| X, Y, R, Theta | 64-bit full range |
| reference frequency resolution | 0.7 µHz |
| reference phase angle resolution | 1.0 µ° |
| Auxiliary Signals | |
| high-speed outputs | 4 channels, ±10 V, amplitude, phase, frequency, X/Y, or user defined |
| D/A converter | 16 bit, 1 MS/s |
| D/A analog bandwidth | 200 kHz |
| high-speed inputs | 2 channels, ±10 V |
| A/D converter | 16 bit, 400 kS/s |
| A/D analog bandwidth | 100 kHz |
| Other Interfaces | |
| host connection | USB 2.0 high-speed, 480 Mbit/s |
| pre-amplifier control bus | ZCtrl proprietary bus to control external pre-amplifiers |
| synchronization bus | ZSync proprietary bus to locally interconnect ZI instruments |
| digital I/O | 32 bit, general purpose |
| General | |
| dimensions | 45 x 28 x 9 cm (19" rack) |
| weight | 6.2 kg |
| power supply | 110/120/220/240 V, 50/60 Hz |
| operating temperature | +5 °C to +40 °C |
| internal oscillator output | sine, ±1 V, 10 MHz |
| internal oscillator stability | 30 ppm, check for ultra-high stability |
| PC operating systems | 32-bit and 64-bit version of Windows XP, Vista, Windows 7, Linux |