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UTD2000 Series User Manual
24
Chapter III Horizontal System
3.1 Horizontal control
(1) Horizontal control knob
Change the horizontal time-base scale through SCALE knob, changing of horizontal scale
can lead to expansion or shrink of waveforms relative to screen center. The horizontal
system can be controlled by the following panel buttons/knobs.
Change the horizontal position of waveform on the screen through POSITION, when the
horizontal position is changing, the position relative to the waveform trigger point will move
right and left.
(2) Horizontal menu button
Press HORI MENU to enter the horizontal menu function. (See table below)
Table 3-1 HORI MENU
Function Menu Setting Description
Window extension On/off Press to turn on the main time base
Time base
selection
Main time
base/extensive
time base
Main time base: set as main time base, the main time base will
change when adjusting horizontal time base.
Extension time base: set as extension time base, the extension
time base will change when adjusting horizontal time base.
Window extension —— Press to turn on the extension time base
Hold off time To adjust the trigger hold-off time by multi-purpose knob
3.2 Explanation of nouns
YT Mode：In this mode, the Y axis represents the amount of voltage, and the X axis
represents the amount of time.
XY Mode：In this mode, the X axis represents the CH1 voltage amount, and the Y axis
represents the CH2 voltage amount.
Scan Mode：When the horizontal time base control is set at 100ms/div or slower, the
instrument enters the slow scan sampling mode. When using the slow scan mode to
observe low frequency signals, it is recommended to set the channel coupling to DC.
SEV/DIV：Horizontal scale (time base) units, such as waveform sampling is stopped (using
the RUN/STOP button), and the time base control expands or compresses the waveform.
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