Commands Listed in Alphabetical Order
the signal afte
r it is digitized. Note that if a signal that exceeds the range of the
digitizer in one of these three scale ranges is repositioned, the displayed waveform
will contain clipped values on-screen. This command is equivalent to selecting
Position/Scale from the Math menu and then entering a Vert Pos value or adjusting
the front panel Vertical POSITION knob.
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 a channel, math, or reference
waveform.
The position value determines the vertical graticule coordinate at
which input signal values, equal to the present offset setting for that reference, are
displayed. For example, if the position for Math 3 is set to 2.0 and the offset is
set to 3.0, then the input signals equal to 3.0 a re displayed 2.0 divisions above
the c enter of the screen.
Be aware that autoscaling occurs when a math waveform is first defined and
enabled, or when a math string changes. After the math waveform is compute d
for the first time, the instrument determines the min + max o f that w aveform
data. T
hen, the instrument sets the math position so that (min + max)/2 is in
the center of the screen. In addition, the instrument sets the math scale so that
the range of the min and max cover 6 divisions. This autoscaling process can
take up to 1/2 second to complete and will override any vertical scale or position
commands for that math waveform received during this time. You should insert an
appropriate pause in your program after defining and enabling a math waveform
befo
re changing its position or scale.
Group
Math
Syntax
MATH<x>:VERTical:POSition <NR3>
MATH<x>:VERTical:POSition?
Related Commands
CH<x>:POSition, REF<x>:VERTical:POSition
Arguments
<NR3> is the desired position control in divisions from the center graticule.
Examples
MATH2:VERTICAL:POSITION 1.3E+00 positions the Math 2 waveform input
signal 1.3 divisions higher than a position of 0.
MATH1:VERTICAL:POSITION? might return :MATH1:VERTICAL:POSI TION
-1.3000E+00
indicating that the current position of Math 1 waveform is
1.3 divisions below the center graticule.
DPO7000, DPO70000/B and DSA7000/B Series Programmer Manual 2-361