MDO3000 Programmer Manual.pdf - 第372页

Commands Listed in A lphabetical Order Group Histogram Syntax HIStogram:DIS play {OFF|LO G|LINEAr} HIStogram:DIS play? Related Commands HIStogram:MODe Arguments <LOG> sets the histogram display to logarithmic scali…

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Commands Listed in Alphabetical Order
0, as they repre
sent digitizing levels that fall above and beneath the waveform
graticule, respectively.
For horizonta
l histograms, this query returns 1000 values, representing the
number of times the histogram source waveform samples were coincident with
each horizontal pixel column. The time of occurrence for each of the horizontal
bins can be derived using the HIStogram:STARt? and HIStogram:END? queries.
Group
Histogram
Syntax
HIStogram:DATa?
Related Commands
HIStogram:BOX
HIStogram:BOXPcnt
HIStogram:COUNt
HIStogram:DISplay
HIStogram:MODe
HIStogram:SOUrce
Examples
HISTOGRAM:DATA? might return :HISTOG RAM:DATA
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,1245,933,903,1003,838,782,764,697,
687,620,582,566,530,595,557,552,518,524,606,
503,526,470,498,554,534,487,546,548,504,554,
513,566,639,508,643,704,662,769,785,806,922,
960,1153,1336,1478,1960,4515,17598,52184,
67040,50417,12885,4104,2382,1866,1699,1428,
1288,1271,1140,975,1024,894,841,841,678,841,
804,685,713,746,729,644,640,787,768,668,671,
661,745,755,692,882,772,802,862,770,854,799,
969,1102,1080,1040,1272,1329,1394,1760,1428,
2418,3313,4475,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0
.
HIStogram:DISplay
This command sets the scaling of the histogram data display to be the count of
each histogram bin or the log of that count. The default scaling is linear.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-341
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