MDO3000 Programmer Manual.pdf - 第1002页

Commands Listed in A lphabetical Order Examples WFMOUTPRE:XZE RO? might return :WFMOUTPR E:XZERO 5.630 0E-9 indicating that the trigger occurred 5.63 ns befor e the ﬁrst sample in the waveform rec ord. WFMOutpre:YMUlt? (…

Commands Listed in Alphabetical Order

WFMOutpre:XU

Nit? (Query Only)

This query indicates the horizontal units of the x-axis of the waveform record

transferred using the

CURVe? query. Typically, this value is "s" when the

waveform sou

rce is displayed in the time domain, and "Hz" when the waveform

source is displayed in the frequency domain. When the waveform source is Math

or a reference waveform, the value can be "s" or "Hz".

If the waveform speciﬁed by DATa:SOUrce is not turned on, nothing is returned

and an error event is generated.

(See page 2-95, Waveform Transfer Command Group.)

(See page

D-1, Waveform Transfer (WFMOutpre and CURVe Query) Examples.)

Group

Waveform Transfer

Syntax

WFMOutpre:XUNit?

Related Commands

DATa:SOUrce

Examples

WFMOUTPRE:XUNIT? might return :WFMOUTPRE:XUNIT "HZ" indicating that

the horizontal units for the waveform ar

einhertz.

WFMOutpre:XZEro? (Query Only)

This query returns the time coordinate, in seconds, or frequency, in hertz,ofthe

ﬁrst data point in the outgoing waveform record transferred using the

CURVe?

query. This time or frequency is relative to the time of the trigger, which is

always 0. Thus, the XZEro time or frequency can be negative. You can query the

units using the WFMOutpre:XUNit? co

mmand. If the waveform speciﬁed by

DATa:SOUrce is not turned on, nothing is returned and an error event is generated.

(See page 2-95, Waveform Transfer Co

mmand Group.)

(See page D-1, Wa veform Transfer (WFMOutpre and CURVe Query) Examples.)

Group

Waveform Transfer

Syntax

WFMOutpre:XZEro?

Related Commands

DATa:SOUrce, WFMOutpre:XUNit?

MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-971

Commands Listed in Alphabetical Order

Examples

WFMOUTPRE:XZE

RO?

might return :WFMOUTPRE:XZERO 5.6300E-9 indicating

that the trigger occurred 5.63 ns before the ﬁrst sample in the waveform record.

WFMOutpre:YMUlt? (Query Only)

This query returns the vertical scale multiplying factor used to convert

the waveform data point values in the outgoing waveform record from

digitizing levels to the YUNit units. You can determine the units by using the

WFMOutpre

:YUNit

query.

See the description of the WFMInpre:YMUlt command to see how this scale

factor is

used to convert waveform sample values to volts.

If the waveform speciﬁed by DATa:SOUrce is not turned on, nothing is returned

andaner

ror event is generated.

(See page 2-95, Waveform Transfer Command Group.)

(See page D-1, Waveform Transfer (WFMOutpre and CURVe Query) Examples.)

Group

Waveform Transfer

Syntax

WFMOutpre:YMUlt?

Related Commands

DATa:SOUrce,

WFMInpre:YMUlt

Examples

WFMOUTPRE:YMULT? might return :WFMOUTPRE:Y MULT 4.0000E- 3 indicating

that the vertical scale for the corresponding waveform is 100 mV/div (for 8-bit

waveform data or 0.390625 V/div for 16–bit data).

WFMOutpre:YOFf? (Query Only)

This query returns the vertical position of the source waveform in digitizing

levels. There are 25 digitizing levels per vertical division for 1-byte data, and

6400 digitizing levels per vertical division for 2-byte data. See the description of

WFMInpre:YOFf to see how this position is used to convert waveform sample

values to volts. If the waveform speciﬁed by DATa:SOUrce is not turned on,

nothing is returned and an error event is generated.

(See page 2-95, Waveform Transfer Command Group.)

(See page D-1, Waveform Transfer (WFMOutpre and CURVe Query) Examples.)

2-972 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual

Commands Listed in Alphabetical Order

Group

Waveform Trans

fer

Syntax

WFMOutpre:YOFf?

Related Commands

DATa:SOUrce,

WFMOutpre:BYT_Nr

Examples

WFMOUTPRE:YOFF? might return :WFMOUTPRE:YOFF - 50.0000E+0 indicating

that the position indicator for the waveform was 50 digitizing levels (2 divisions)

below cen

ter screen (for 8-bit waveform data).

WFMOutpre:YUNit? (Query Only)

This query returns the units of data points in the outgoing waveform record

transferred using the

CURVe? query. This can be any of several string values,

depending upon the vertical units of the source waveform (speciﬁed by the

DATa:SOUrce command). Typically, this is “V” for volts. If the waveform

speci

ﬁed by DATa:SOUrce is not turned on, nothing is returned and an error

event is generated.

(See p

age 2-95, Waveform Transfer Command Group.)

(See page D-1, Wa veform Transfer (WFMOutpre and CURVe Query) Examples.)

Group

Waveform Transfer

Syntax

WFMOutpre:YUNit?

Related Commands

DATa:SOUrce

Examples

WFMOUTPRE:YUNIT? might return :WFMOUTPRE:YUNIT "dB" indicating that

the vertical units for the waveform are measured in decibels.

WFMOutpre:YZEro? (Query Only)

This query returns the vertical offset of the source waveform. You can

determine the units using the WFMOutpre:YUNit? query. See the description of

WFMInpre:YZEro to see how this offset is used to convert waveform sample

values to volts. If the waveform speciﬁed by DATa:SOUrce is not turned on,

nothing is returned and an error event is generated.

MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-973