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Appendix D: Waveform Transfer (WFMOutpre and CURVe Query) Examples

WFMOutpre? Query results

Explanation

NR_PT 25

This value indicates the number of data points in the waveform record to be transferred

using the CURVE? query. (If you would like to determine only this value, use the

WFMOutpre:NR

_Pt? query.) Note: this value is typically equal to the full record length,

but you also have the option to transfer only a portion of the record length by using the

DATa:STARt and DATa:STOP commands.

PT_FMT Y

This value indicates the format of the data points in the waveform record. In this c ase, the

value repre

sents YT format. This is query only. (If you would like to determine only this

value, use the WFMOutpre:PT_Fmt? query.)

PT_ORDER L

INEAR

This value i

salways

LINear.

XUNIT "s"

This value

indicates the units of the x-axis of the waveform record. This is determined by

the horizontal settings for the waveform source. Typically, this value is “s”, representing

seconds. When using the math waveform as a source, the value can be “s” or “Hz”. This

is query o

nly. (If you would like to determine only this value, use the WFMOutpre:XUNit?

query.)

XINCR 100

.0000E-9

This value indicates the time, in seconds, or frequency, in hertz, between data points i n the

waveform record. This is query only. (If you would like to determine only this value, use

the WFMO

utpre:XINcr? query.)

XZER0 -500.0000E-6

This va

lue indicates the time, in seconds, or frequency, in hertz, of the ﬁrst data point in the

waveform record. This time or frequency is relative to the time of the trigger, which is always

0. So, this XZEro time or frequency can be negative. This is query only. (If you would like to

determ

ine only this value, use the WFMOutpre:XZEro? query.)

PT_OFF 0

This i

s a query provided only for compatibility with other Tektronix oscilloscopes. The

returned value is always 0. (If you would like to determine only this value, use the

WFMOutpre:PT_Off? query.)

YUNIT "State"

This value indicates the vertical units of data points in the waveform record. This can be

any o

f several string values, depending upon the vertical units of the source waveform –

in this case, State. This is query only. (If you would like to determine only this value, use

the WFMOutpre:YUNit? query.)

YMULT 1.0000

This value indicates the multiplying factor to convert the data point values from digitizing

lev

els to the units speciﬁed by the

WFMOUTpre:YUNit command. This is query only. (If

you would like to determine only this value, use the WFMOutpre:YMUlt? query.)

FF 0.0E+0

This value indicates the vertical position of the source waveform in digitizing levels. There

are 25 d igitizing levels per vertical division. This is query only. (If you would like to determine

ly this value, use the WFMOutpre:YOFf? query.)

YZERO 0.0E+0

his value indicates the vertical offset of the source waveform in units speciﬁed by the

WFMOUTpre:YUNit command. This is query only. (If you would like to determine only

this value, use the WFMOutpre:YZEro? query.)

Example 3: Digital with 4 Bytes Per Point and Zoom Off

Goal: Transfer 25 points of Digital data from the oscilloscope to a PC using 4

bytes per point and Zoom off.

MSO54, MSO56, MSO58, MSO58LP Programmer D-5

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Brand	Tektronix
Model	MSO56
Category	Test Equipment
Language	English

Tektronix MSO56 User Manual

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Tektronix MSO56 Specifications

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