Commands Listed in Alphabetical Order
MATH<x>:VERT
ical:SCAle
This command sets or queries the vertical scale of the specified math waveform.
The Math waveform is specified by x, which ranges from 1 through 4. This
command is eq
uivalent to selecting Position/Scale from the Math menu and then
entering a Vert Scale value or adjusting the front panel Vertical SCALE knob.
Each wavefo
rm has its own vertical scale parameter. For a signal with constant
amplitude, increasing the scale causes the waveform to be displayed smaller.
Decreasing the scale causes the waveform to be displayed larger.
Scale affects all waveforms. For reference and math waveforms, the scale setting
controls the display only, graphically scaling these waveforms and having no
affect on the acquisition hardware.
Be aware that autoscaling occurs when a ma t h waveform is first defined and
enabled, or when a math string changes. After the math waveform is computed
for the first time, the instrument determines the min + max of that waveform
data. Then, the instrument sets the math position so that (min + max)/2 is in
the cen
ter of the screen. In addition, the instrument sets the math scale so that
the range of the min and max covers 6 divisions. This autoscaling process can
take up to 1/2 second to complete and will override any vertical s cale 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
before changing its position or scale.
Group
Math
Syntax
MATH<x>:VERTical:SCAle <NR3>
MATH<x>:VERTical:SCAle?
Related Commands
CH<x>:SCAle, REF<x>:VERTical:SCAle
Arguments
<NR3> is the scale, in volts, amps or watts per division. The range is from
100.0E-36 through 100.0E+36.
Examples
MATH4:VERTICAL:SCALE 100E-03 sets the Math 4 waveform scale to 100 mV
per division.
MATH2:VERTICAL:SCALE? might return :MATH2:VERTICAL:SCALE
1.0000E+00
, indicating that the current scale setting of Math 2 waveform is
1 V per division.
2-362 DPO7000, DPO70000/B and DSA7000/B Series Programmer Manual
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