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TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine
— 03-04/2013
Oscilloscope for Basic Use
Antenna installers are some-
times confronted with problems
that they can’t solve even with a
higher-end satellite signal ana-
lyzer. The pocket oscilloscope
DSO201 provides an interesting
alternative. We tested it as a sig-
nal analyzer for satellite installa-
tions.
The DSO201 represents an open
source development of the hardware
and software. It is based on an ARM
Microcontroller that comes with the
necessary inputs and outputs. From
the outside, the DSO201 looks simi-
lar to an MP3 player; even the buttons
have the same symbols. But instead of
an output for a headphone, there’s an
input for the included oscilloscope test
probe. Aside from that, there’s also a
small slit in one corner with a metal
pin. But this is not for fastening a car-
rying strap; instead it’s an output for
the integrated signal generator. The
color screen is easy to read and at 320
x 320 pixels its resolution is sufficient-
ly high enough. A battery charger is
not included although any typical mini
USB charger can be used to charge the
DSO201.
Since with this oscilloscope we are
dealing with an Open Source design
and that the circuit board layout and
the source code are freely accessi-
ble, a variety of firmware versions
A Small Oscilloscope
Aids in Measurements
Vitor Martins Augusto
are available. All oscilloscopes with
the DSO201 label are compatible with
each other and can be operated with
different firmware versions that can be
downloaded, for example, from http://
code.google.com/p/dsonano/.
After
several tests with the preinstalled
firmware, we opted to install the popu-
lar “BenF” firmware. This version was
optimized for speed and comes with
some sophistication.
But the more important question
that needs to be answered is: how do
you upload the new firmware? Short of
finding a description on how to do this,
we copied the two firmware files onto a
MicroSD card. But after ten attempts to
try and start a flash process, we knew
The DSO201 operates with
an integrated signal generator
that is capable of generating an
acceptable 22kHz signal
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