5
Screen Display
DSO203 has a 3” full color TFT LCD display to show waveforms and all relevant information. It is a
challenging task to place all the information on such a small display, and it is also difficult for the
user to navigate through the maze of menus and functions with only 6 buttons.
When DSO203 is turned on, a very busy screen is flashed on the screen as shown below:
A large area in the middle of the DSO203 screen is dedicated to display 4 colored waveform traces: a
blue trace for Channel A, a yellow trace for Channel B, a purple trace for Channel C and a green trace
for Channel D. The color coding is very important and very convenient. There are many fields with
alphanumeric information displayed in color. If a field is related to the four input channels, it has the
corresponding color to give you a clue as to the attributes of this particular field.
The four heavy colored signal traces are displayed on a black background with very light grids in
5mm spacing. In addition, there are 6 cursors in single pixel dotted lines. Two horizontal cursors
show voltages V1 and V2. One horizontal cursor shows the triggering level THR. Two vertical
cursors show timing marks T1 and T2. A third vertical cursor shows the triggering point T0.
On the top edge of the display is an Input Area, divided into 6 fields from A to F, showing attributes
of these 4 traces, and an Output Area from G to I, showing attributes of the output wave sent out of
the output socket. On the right edge is the Measurement Area, divided into 11 fields from J to T,
allowing parameters to be selected and to be modified. On the bottom is the Parameter Area, divided
into 4 fields from U to W, showing values of parameters selected for displaying.
The rocker switch Navigate is used to navigate through these fields in the Input, Output and
Measurement Area. The cursor is a currently selected field, flashing on and off to indicate that it is
selected and ready for change. The rocker switch Select is then scrolled left or right to
change value in the selected field.
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