MDO3000 Programmer Manual.pdf - 第373页

Commands Listed in Alphabetical Order HIStogram:MO De This command selects the type of histogram to create or disables the histog ram display . The query form either return s the current histogram type or that t he histo…

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Commands Listed in Alphabetical Order
Group
Histogram
Syntax
HIStogram:DISplay {OFF|LOG|LINEAr}
HIStogram:DISplay?
Related Commands
HIStogram:MODe
Arguments
<LOG> sets the histogram display to logarithmic scaling
<LINEAr> sets the histogram display to linear scaling. This is the default setting.
Examples
HISTOGRAM:DISPLAYLOG sets the histogram scaling to be the log count of each
histogram bin.
HISTOGRAM:DISPLAY? might return :HISTOGRAM:DISPLAY LOG indicating
that the current histogram display scaling is the log count of each histogram bin.
HIStogram:END? (Query Only)
Returns the time (horizontal) or vertical units value (vertical) of the last bin where
the histogram data ends. The HIStogram:MODe must be either
HORizontal or
VERTical for a value to be returned. If the mode is OFF, an error event is set
and nothing is returned.
If the HIStogram:MODe is
HORizontal, the value returned is the time of the
right bin. If the HIStogram:MODe is
VERTical the value returned is the vertical
units value of the bottom bin. The returned value is an <NR3>.
Group
Histogram
Syntax
HIStogram:END
?
Related Commands
HIStogram:MODe
HIStogram:STARt?
Returns
<NR3>
Examples
HIS
TOGRAM:END?
might return :HISTOGRAM:END 1.6000E-05 indicating that
the last bin is at 16 μs.
2-342 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
HIStogram:MO
De
This command selects the type of histogram to create or disables the histogram
display. The query form either returns the current histogram type or that the
histogram di
splay is disabled.
Group
Histogram
Syntax
HIStogram:MODe {HORizontal|VERTical|OFF}
HIStogram:MODe?
Related Commands
HIStogram:DISplay
Arguments
HORizontal enables a horizontally positioned histogram that shows time
distribution.
VERTical enables a vertically positioned histogram that shows a voltage
distribution, or another distribution such as amperes.
OFF disables the collection of the histogram measurement.
Examples
HISTOGRAM:MODE HORIZONTAL sets the type of histogram created to horizontal,
which displays a horizontally positioned histogram that shows time distribution.
HISTOGRAM:MODE? might return :HISTOGRAM:MODE OFF, indicating that the
histogram display is disabled.
HIStogram:SOUrce
This command sets or queries which source will be compared against the
histogram box when the histogram testing is enabled.
Group
Histogram
Syntax
HIStogram:SOUrce {CH1|CH2|CH3|CH4|MATH|REF1|CH2|CH3|CH4}
HIStogram:SOUrce?
Related Commands
HIStogram:DISplay
Arguments
CH1–4> selects the analog channel waveform to use as the source for the
histogram. The x variable can be expressed as an integer ranging from 1 through 4.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-343
Commands Listed in Alphabetical Order
MATH selects th
e math waveform as the source for the histogram.
REF<1–4> selects a reference waveform as the source for the histogram. The x
variable can b
e expressed as an integer ranging from 1 through 4.
Examples
HISTOGRAM:SOURCE CH1 enables the Channel 1 waveform to be compared
against the histogram box.
HISTOGRAM:SOURCE? might return :HISTOGRAM:SOURCE CH1, indicating that
the waveform for Channel 1 is the source for the histogram.
HIStogram:STARt? (Query Only)
Returns the time (horizontal) or vertical units value (vertical) of the first bin wher
e
the histogram data starts. The HIStogram:MODe must be either
HORizontal
or VERTical for a value to be returned. If the mode is OFF, an error event is set
and nothing is returned.
If the HIStogram:MODe is
HORizontal, the value returned is the time of the left
bin. If the HIStogram:MODe is
VERTical the value returned is the vertical units
value of the top bin. The returned value is an <NR3>.
Group
Histogram
Syntax
HIStogram:STARt?
Related Commands
HIStogram:END?
HIStogram:MODe
Returns
<NR3> showing the returned value.
Examples
HISTOGRAM:START? might return :HISTOGRAM:START 2.0000E-06
indicating that the first bin is at 2 μs.
HORizontal? (Query Only)
Returns all settings for the horizontal commands.
Group
Horizontal
2-344 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual