MDO3000 Programmer Manual.pdf - 第370页

Commands Listed in A lphabetical Order <NR3> speciﬁes the bottom position of the histogram box in percentage coordinates. The default value is 20% Examples HISTOGRAM:BOX PCNT 30 .0,25.0,70.0,75 .0 sets the left bou…

Commands Listed in Alphabetical Order

Related Commands

HIStogram:BOX

Pcnt

Arguments

<NR3> is a ﬂoating point number that speciﬁes the left position of the histogram

box in source waveform horizontal units.

<NR3> speciﬁes the top position of the histogram box in source waveform vertical

units.

<NR3> speciﬁes the right position of the histogram box in source waveform

horizontal units.

<NR3> speciﬁes the bottom position of the histogram box in source waveform

vertical units.

Examples

HISTOGRAM:BOX 1E-9, 0.2 50, 2E-9, 0.500 deﬁnes the coordinates of the

histogram box in source waveform coordinates.

HISTOGRAM:BOX? might return :HISTOGRA M:BOX 1.0000E-09, 0.2500,

2.0000E-09, 0.5000

, which identiﬁes the coordinates of the histogram box in

source waveform coordinates.

HIStogram:BOXPcnt

This command speciﬁes the histogram box coordinates in terms of percentages

of the full screen extents of the source waveform. The arguments refer to the

left (percent of the horizontal screen extent), top (percent of the vertical screen

extent), right (percent of the horizontal screen extent), bottom (percentofthe

vertical screen extent). The valid range for these values is 0.0 to 100.0.

Group

Histogram

Syntax

HIStogram:BOXPcnt <NR2>, <NR2>, <NR2>, <NR2>

HIStogram:BOXPcnt?

Related Commands

HIStogram:BOX

Arguments

<NR3> is a ﬂoating point number th

at speciﬁes the left position of the histogram

box in percentage coordinates. The default value is 20%

<NR3> speciﬁes the top position

of the histogram box in percentage coordinates.

Thedefaultvalueis80%

<NR3> speciﬁes the right posit

ion of the histogram box in percentage coordinates.

Thedefaultvalueis80%

MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-339

Commands Listed in Alphabetical Order

<NR3> speciﬁes

the bottom position of the histogram box in percentage

coordinates. The default value is 20%

Examples

HISTOGRAM:BOXPCNT 30.0,25.0,70.0,75.0 sets the left boundary of the

histogram box to 30% of the graticule (3 divisions from the left edge); the top

boundary to 25% of the graticule (0.25 × 10 = 2.5 divisions from the top edge);

the right boundary to 70% of the graticule (7 divisions from the left edge); and

the bottom boundary to 75% of the graticule (0.75 × 10 = 7.5 divisions from

the top edge).

HISTOGRAM:BOXPCNT? might return :HISTOGRAM:BOXPCNT

30.0000,25.1000,70.0000,75.2000.

HIStogram:COUNt (No Query Form)

This command (no query form) clears the count and statistics for the histogram

and the histogram source data. If the histogram is on, then counting restarts.

Group

Histogram

Syntax

HIStogram:COUNt RESET

Related Commands

HIStogram:BOX

HIStogram:BOXPcnt

Arguments

RESET

Examples

HISTOGRAM:COUNT RESET clears the count and statistics for the histogram and

the histogram source data.

HIStogram:DATa? (Query Only)

This query returns the histogram data when HIStogram:MODe is HORizontal or

VERTical. If the mode is OFF, then no data is returned and an error event is set.

The data values returned for this query represent the number of times the histogram

source waveform samples were coincident with a particular histogram bin.

For vertical histograms, this query returns 256 values, representing the number

of times the histogram source waveform samples were coincident with each of

the 256 digitizing levels. Of these 256 values, the ﬁrst 2 and last 3 are always

2-340 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual

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,

0,0,0,0,0,0,1245,933,903,1003,838,782,764,697,

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