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5 - 30 FUNCTION REFERENCE
DISPLAY MENU
Description:
The DISPLAY menu offers a set of powerful display functions for the analog mode
and the digital mode.
In the
analog
mode, the scope can be set to the X DEFLECTION mode. In this
mode XY displays can be generated from a combination of any of the input
channels for X and Y, while the analog timebase generator is turned off.
In the
digital
mode, the display menu is extended with additional display functions
such as: WINDOWS, VERTICAL MAGNIFY, X vs Y, TEXT GENERATOR and
INTERPOLATION.
For the
X DEFLECTION
function for the analog mode, refer to X DEFLECTION
further on in this chapter.
WINDOWS
automatically separates the traces on the screen when more than one
trace is displayed. Each trace is then displayed in a window.
When two channels are displayed, one is displayed in the upper half of the
screen, and the other is displayed in the bottom half. When three traces from
different channels are displayed, the screen is divided into four windows of two
divisions each.
Even when only two divisions are allocated to a trace, for each trace is displayed
with the full dynamic range of 8 bits and the full 256 ADC levels are still used. The
displayed amplitude of the signal and its screen readout, has however, been
adapted to the new window space. Also the range of the POS controls is limited
to the new window. The windows mode is especially useful in multichannel
applications. It eliminates trace positioning and scaling, while retaining maximum
resolution, accuracy and trigger sensitivity.
VERT MAGNIFY
is used to vertically expand signals without changing the
AMPL/DIV setting of the input channels. It can be used to study signal details in
high resolution acquisitions such as an averaged waveform. The signals can be
expanded up to 32 times, and the magnification factor is displayed in the
DISPLAY menu. At the same time the vertical deflection (volts/div) in the bottom
text area is adjusted.
X versus Y
is an XY display capability in the digital mode. It is similar to X deflection
in the analog operating mode. The TRACK control is used to select the source for
vertical direction (Y). The source can be any newly acquired trace but it can also be
a saved trace in a memory location (e.g., m3). For horizontal direction (X) you can
choose from any active channel or a signal saved in memory (e.g., m3.1) as well.