BenchMike Pro 2025/2050 & Z-Mike Pro 4025/4050 Instruction Handbook: Introduction
1-5
The drawings to the right show sample oscilloscope wave-
forms from the measurement of an opaque product and a
transparent product. For the opaque product, the BenchMike
Pro can easily determine the width of the product since the
waveform drops sharply and rises sharply at the edges of the
product. For the transparent product, however, laser light
passes through the product and the behavior of the light be-
tween the first sharp drop and last sharp rise must be ig-
nored. With the Transparent Object Measurement option, the
product diameter is based on the first sharp drop in laser light
and the last sharp rise, resulting in a correct calculation of the
diameter.
Note that having a clean product is essential for attaining an
accurate measurement in these modes.
1.5
Data Processing and Display
The BenchMike Pro allows you great flexibility in controlling the way data is displayed and processed. As de-
scribed in the
Advanced Capabilities
section, there are several parameters which can be used to control the aver-
aging of measurements, the number of digits displayed on the screen, the format of printed reports, etc. The
BenchMike Pro has been specifically designed to allow you to customize your measurement display and data
processing simply and for your specific needs and preferences.
Each sweep of the laser beam across the measurement area is called a scan, and the BenchMike Pro scans the
part 100 times per second. Scans are collected to compute a reading for a given sample. The Averaging Rate
parameter determines how many scans (or time length in seconds) are averaged to compute one reading.
Although each scan received from the BenchMike Pro includes enough information to compute a size value, ac-
curacy and repeatability are increased significantly if a number of scans are collected and averaged. Scans can
be taken of individual samples or continuous products, as defined on the
samples, an Averaging Rate value of 200 scans is typical. For continuous products, an appropriate value should
be determined experimentally for the particular application.