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Command Groups

Table 2-48: Waveform Transfer Commands (cont.)

Command

Description

WFMOutpre? This query returns the information needed to interpret the waveform data points returned by

the

CURVe? query. It returns the waveform transmission and formatting parameters for the

waveform speciﬁed by the DATa:SOUrce command.

WFMOutpre:BIT_Nr This command speciﬁes the number of bits per data point in the outgoing waveform being

transferred using the

CURVe? query. Changing the v alue of WFMOutpre:BIT_Nr also

changes the values of WFMOutpre:BYT_Or and DATa:WIDth.

WFMOutpre:BN_Fmt This command speciﬁes the format of the binary data for outgoing waveforms w hen

WFMOutpre:ENCdg is set to BINary. The format can be RI (signed integer) or RP

(positive integer) for analog channels, and FP for RF frequency domain traces. Changing

the value of WFMOutpre:BN_Fmt also changes the value of DATa:ENCdg.Thewaveformis

speciﬁed by the DATa:SOUrce command.

WFMOutpre:BYT_Nr This command speciﬁes the data width for the outgoing waveform speciﬁed by the

DATa:SOUrce command. (This command is synonymous with

DATa:WIDTH.) N o te that

changing WFMO utpre:BYT_Nr also changes WFMOutpre:BIT_Nr and D ATa:WIDth.

WFMOutpre:BYT_Or This command speciﬁes which byte of outgoing binary waveform data is transmitted ﬁrst

(the byte order). The byte order can either be MSB (most signiﬁcant byte ﬁrst) or LSB (least

signiﬁcant byte ﬁrst, also known as IBM format). This speciﬁcation only has meaning when

WFMOutpre:ENCdg is set to BINary and WFMOutpre:BYT_Nr is 2.

WFMOutpre:CENTERFREQuency? This query returns the center frequency of the incoming waveform. For non-MDO models,

this query always returns 0.

WFMOutpre:DOMain? This query returns the domain of the outgoing waveform — either TIMe or FREQuency. If

the domain is TIMe, it indicates that the data is to be treated as integer information. If the

domain is FREQuency, it indicates that the data is to be treated as ﬂoating point information.

WFMOutpre:ENCdg This command speciﬁes the type of encoding (BINary or ASCii) of the outgoing

waveform data queried using the

CURVe? query. (This can also be set using the

DATa:ENCdg command, which provides the ability to set

WFMOutpre:ENCdg,

WFMOutpre:BN_Fmt,

and W FMOutpre:BY T_Or using a single command.)

WFMOutpre:NR_Pt? This query returns the number of data points in the waveform record that will be

transmitted in response to a

CURVe? query. This value is the adjusted range speciﬁed by

DATA:START and DATA:STOP commands. Note that the oscilloscope automatically

adjusts the

DATA:START and DATA:STOP values when the DATA:STOP value is l ess

than the

DATA:START value, and when the DATA:START and/or DATA:STOP value is

greater than the record length of the source waveform. The adjusted

DATA:START and

DATA:STOP values determine WFMOUTPRE:NR_PT. (You can use DA Ta:STARt and

DATa:STOP to transfer partial waveforms.) If the waveform speciﬁed by the DATa:SOUrce

command is not turned on, an error will be generated.

WFMOutpre:PT_Fmt? This query returns the point format of the data points in the outgoing waveform record

transferred using the

CURVe? query. The returned values can be Y, which indicates normal

waveform points for YT format, or ENV, which indicates envelope mode format in which the

data is returned as a series of min/max pairs. The minimum value precedes the maximum.

The outgoing waveform is speciﬁed by the DATa:SOUrce command. The query command

will time out and an error will be generated if the waveform speciﬁed by DATa:SOUrce is

not turned on.

WFMOutpre:PT_Off? This query always returns 0 if the outgoing waveform speciﬁed by DATA:SOUrce is on or

displayed.

2-108 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual

Brand	Tektronix
Model	MDO4000B Series
Category	Test Equipment
Language	English

Tektronix MDO4000B Series User Manual

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