Download Leaflet - Zurich Instruments
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Software<br />
The HF2LI-RT / HF2IS-RT options can be programmed<br />
based on Windows XP, Vista, and on Linux computers. The<br />
delivered package includes:<br />
• A C compiler that generates code that can be<br />
downloaded to the embedded processor inside the<br />
HF2 Instrument<br />
• ANSI C standard stdlib library for general purpose<br />
functions like memory allocation, process control,<br />
conversions and others<br />
• ANSI C standard math library for mathematical<br />
operations<br />
• ANSI C standard stdio library for functions and<br />
types used for various input and output operations,<br />
in particular files<br />
• Support for the API for communication between<br />
software running on the host computer and<br />
real-time program (ziAPI)<br />
• Programmer and host computer tools<br />
Table 2 - Software Implementation Comparison<br />
Algorithm<br />
implementation<br />
on<br />
host computer<br />
Programming language LabVIEW, C,<br />
C++,<br />
Delphi, etc.<br />
Ease of implementation + -<br />
Complex algorithms + =<br />
Debugging + -<br />
Latency - ++<br />
User friendliness = +<br />
Example Applications<br />
Embedded<br />
processor<br />
with<br />
HF2LI-RT /<br />
HF2IS-RT<br />
The applications include system control in scanning<br />
probe microscopy, PLL applications, multi-frequency and<br />
MEMS oscillations, periodic measurements, and<br />
high-throughput measurements.<br />
C<br />
Table 3 - Application Comparison<br />
Algorithm<br />
implementation<br />
on<br />
host computer<br />
PLL with time constant > 50 x<br />
ms<br />
PLL with time constant < 50<br />
ms<br />
Oscillation control for MEMS<br />
Q > 100<br />
Spectral or octave analysis x<br />
Multi-mode oscillators<br />
Spectral analysis with<br />
real-time trigger and latency<br />
< 50 ms<br />
Phased array recording<br />
x<br />
High-throughput<br />
measurements /<br />
semiconductor<br />
characterization<br />
Specifications<br />
Table 4 - Processor Details<br />
processor type<br />
processor floating point unit<br />
processor performance<br />
processor memory<br />
processor cache<br />
Embedded<br />
processor<br />
with<br />
HF2LI-RT /<br />
HF2IS-RT<br />
x<br />
x<br />
x<br />
x<br />
MicroBlaze, 32-bit RISC<br />
processor with Harvard<br />
architecture (separate<br />
code and data memory<br />
buses)<br />
32 bit in hardware<br />
64 MHz<br />
64 MB<br />
16 kB instruction, 16 kB<br />
data<br />
Table 5 - Timing & Performance<br />
typical latency (depends on 10 μs<br />
complexity of algorithm)<br />
get/set parameter rate 500 kHz<br />
PLL loop rate (example) 120 kSample/s<br />
PID loop rate (example) 120 kSample/s<br />
x<br />
<strong>Zurich</strong> <strong>Instruments</strong><br />
Technoparkstrasse 1<br />
CH-8005 <strong>Zurich</strong><br />
Switzerland<br />
Phone +41-44-5150410<br />
Fax +41-44-5150419<br />
Email info@zhinst.com<br />
Web www.zhinst.com<br />
About <strong>Zurich</strong> <strong>Instruments</strong><br />
Technology-leader <strong>Zurich</strong> <strong>Instruments</strong> (ZI) designs and manufactures high performance dynamic signal<br />
analysis instruments for advanced scientific research and leading industrial applications. ZI products include<br />
lock-in amplifiers, instruments for electrical impedance spectroscopy, and application specific pre-amplifiers.<br />
Headquartered in <strong>Zurich</strong>, Switzerland, ZI is a technology spin-off from the Swiss Federal Institute of Technology<br />
(ETH <strong>Zurich</strong>). ZI customers are scientists and engineers in leading research labs and organizations worldwide.<br />
Disclaimer<br />
The contents of this document are provided by <strong>Zurich</strong> <strong>Instruments</strong>, 'as is'. ZI makes no representations nor<br />
warranties with respect to the accuracy or completeness of the contents of this publication and reserves the<br />
right to make changes to the specification at any time without notice. All trademarks are the property of their<br />
respective owners.