Commands Listed in Alphabetical Order
This command o f
fsets the vertical acquisition window (moves the level at the
vertical center of the acquisition window) for the selected channel. Visualize offset
as scrolling the acquisition window towards the top of a large signal for increased
offset values, and scrolling towards the bottom for decreased offset values. The
resolution of the vertical window sets the offset increment for this control.
Offset adjusts only the vertical center of the acquisition window for channel
waveforms to help determine what data is acquired. The ins t rument alwa ys
displays the input signal minus the offset value. The channel reference marker will
move to the
vertical graticule position g iven by the negative of the offset value
divided by the scale factor, unless that position is off-screen. If the c omputed
coordinate for the reference mark is off-screen, the mark moves to the nearest
screen limit and changes from a right-pointing arrow ( →)toanarrowpointingin
the appropriate off-screen direction.
Group
Vertical
Syntax
CH<x>:OFFSet <NR3>
CH<x>:OFFSet?
Related Commands
CH<x>:POSition
Arguments
<NR3> is the offset value for the specified channel.
Examples
CH3:OFFSet 2.0E-3 sets the offset for Channel 3 to 2 m V.
CH4:OFFSet? might return :CH4:OFFSET 1.0000E-03, indicating that the
offset for Channel 4 is set to 1 mV.
CH<x>:POSition
This command sets or queries the vertical position of the specified channel. The
channel is specified by x. The value of x can range from 1 through 4. The position
value is applied to the signal before it is digitized. This command is equivalent
to selecting Position/Scale from the Vertical menu and either viewing or setting
Position.
Increasing the position value of a waveform causes the waveform to move up,
and decreasing the position value causes the waveform to move down. Position
adjusts only the display position of a waveform, whether it is a channel, math,
or reference waveform. The position value determines the vertical graticule
coordinate at which input signal values, minus the present offset setting for that
channel, are displayed. For example, if the position for Channel 3 is set to 2.0
2-114 DPO7000, DPO70000/B and DSA7000/B Series Programmer Manual
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