Chapter 1 Quick Start RIGOL
DS4000E User’s Guide 1-15
vertical scale adjustment mode between “Coarse” and “Fine”.
MATH: press this key to open the math operation function menu. You can
perform addition, subtraction, multiplication, division, FFT, digital filter, logic
operations and advanced operations.
REF: press this key to enable the reference waveform function. You can
compare the waveform actually measured with the reference waveform.
Decode1, Decode2: press any key to open the corresponding decoding
function menu. DS4000E supports parallel decoding and various protocol
decodings (for more details, refer to “
Protocol Decoding”).
HORIZONTAL
MENU: press this key to open the horizontal control menu. You can turn on or
off the delayed sweep, switch between different horizontal time base modes,
switch between “Coarse” and “Fine” adjustments of the horizontal time base as
well as modify the horizontal reference setting.
HORIZONTAL SCALE: horizontal scale knob.
Turn the knob to modify the horizontal time base. During the modification, the
waveforms displayed are expanded or compressed horizontally; the horizontal
time base message (as shown in the figure below) at the upper-left side of the
screen changes accordingly. Pressing down the knob can quickly turn on or off
the delayed sweep.
When delayed sweep is turned on, turning the knob can modify the delayed
sweep time base. During the modification, the delayed sweep waveform is
expanded or compressed horizontally; the delayed sweep time base message
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