Tektronix DSA8300, Programmer'S Manual

Page: 106 / 455

Commands Listed in Alphabetical Order
value in the Scale control in the Setup section of the Vertical Setup dialog box
or adjusting the front-panel Vertical SCALE knob.
Channel scale, expressed as the per division setting, adjusts the display size for the
selected channel. Similar to the scale control for reference and math waveforms,
this control provides graphical scaling only; the control has no effect on the input
vertical acquisition hardware. Increasing the scale causes the waveform to be
displayed smaller. Decreasing the scale causes the waveform to be displayed
larger.
The range and resolution of scale values for a given channel is dependent on
multiple factors: the sampling module type (speci
fi cally, its input dynamic range),
the probe type (if attached), the external attenuation factor, and the selected units
(if TDR is active).
For more information on how scale ranges are determined, refer to the topic
Vertical Scale in the online help for your instrument.
Channel scale changes have an effect on the allowable offset range for the
channel. In general, as the vertical scale value is reduced, the amount of allowable
offset increases.
For more information on how scale affects offset range, refer to the topic Vertical
Offset in the online help for your instrument.
Group Vertical
Syntax
CH<x>:SCAle <NR3>
CH<x>:SCAle?
Related Commands CH<x>:OFFSet
CH<x>:POSition
Arguments
NR3
is the vertical channel scale in units per division.
Examples
CH4:SCALE 5.0E-01
sets the scale for Channel 4 to 500 mV per division.
CH2:SCALE?
might return
CH2:SCALE 0.02000000000
, indicating that the
current scale setting of Channel 2 is 20 mV per division.
CH<x>:UNIts
This command sets or queries the units for the speci fi ed channel. The channel is
speci fi ed by x, which can be 1 through 8. Sending this command is the equivalent
to setting the Units control in the Channel section of the Vertical Setup dialog
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