Lake Shore Model 475 Gaussmeter User’s Manual
Introduction
1-1
CHAPTER 1
INTRODUCTION
1.0
GENERAL
This chapter provides an introduction to the Model 475 DSP Gaussmeter. The Model 475 was designed and
manufactured in the United States of America by Lake Shore Cryotronics, Inc. The Model 475 includes the following.
•
Industry Leading DSP Technology.
•
Field Ranges from 35 mG to 350 kG.
•
DC Measurement Resolution to 20
µ
G.
•
Basic DC Accuracy of ±0.05%.
•
DC to 50 kHz Frequency Range.
•
15 Band-Pass and 3 Low-Pass AC Filters.
•
Peak Capture of 20
µ
s Pulse Widths and above.
•
Data Buffer for 1000 Readings.
•
Computer Interface Sampling Rates to 100 reading per second.
•
Integrated Electromagnet Field Control Algorithm.
•
Standard and Custom Probes Available.
1.1
DESCRIPTION
The First DSP Gaussmeter…
Lake Shore combined the technical advantages of digital signal processing with over a
decade of experience in precision magnetic field measurements to produce the first commercial digital signal processor
(DSP) based Hall-effect gaussmeter, the Model 475. DSP technology creates a solid foundation for accurate, stable and
repeatable field measurement and at the same time enables the gaussmeter to offer an unequaled set of useful
measurement features. The Model 475 is intended for the most demanding DC and AC applications and in many cases
can provide the functions of two or more instruments in a field measurement system.
The power of DSP technology is demonstrated in the superior performance of the Model 475 in DC, RMS, and Peak
measurement modes.
Figure 1-1. Model 475 Front Panel
