Introduction; Sampling - TiePie Handyscope HS3 User Manual

Introduction

Before using the Handyscope HS3 first read chapter
Many technicians investigate electrical signals. Though the measurement may not
be electrical, the physical variable is often converted to an electrical signal, with a
special transducer. Common transducers are accelerometers, pressure probes,
current clamps and temperature probes. The advantages of converting the phys-
ical parameters to electrical signals are large, since many instruments for examin-
ing electrical signals are available.
The Handyscope HS3 is a portable two channel measuring instrument with Arbi-
trary Waveform Generator. The Handyscope HS3 is available in several models
with different maximum sampling frequencies: 5 MS/s, 10 MS/s, 25 MS/s, 50 MS/s
or 100 MS/s. The native resolution is 12 bits, but user selectable resolutions of 8,
14 and 16 bits are available too, with adjusted maximum sampling frequency:
Resolution
8 bit
12 bit
14 bit 3.125 MS/s 3.125 MS/s 3.125 MS/s 3.125 MS/s 3.125 MS/s
16 bit
With the accompanying software the Handyscope HS3 can be used as an oscil-
loscope, a spectrum analyzer, a true RMS voltmeter or a transient recorder. All
instruments measure by sampling the input signals, digitizing the values, process
them, save them and display them.
3.1

Sampling

When sampling the input signal, samples are taken at fixed intervals. At these
intervals, the size of the input signal is converted to a number. The accuracy of this
number depends on the resolution of the instrument. The higher the resolution,
the smaller the voltage steps in which the input range of the instrument is divided.
The acquired numbers can be used for various purposes, e.g. to create a graph.
HS3-100 HS3-50
100 MS/s 50 MS/s
50 MS/s 50 MS/s
195 kS/s 195 kS/s
Table 3.1: Maximum sampling frequencies
1 about safety.
HS3-25 HS3-10
25 MS/s 10 MS/s
25 MS/s 10 MS/s
195 kS/s 195 kS/s
3
HS3-5
5 MS/s
5 MS/s
195 kS/s
5
Introduction