MDO3000 Programmer Manual.pdf - 第1001页

Commands Listed in Alphabetical Order WFMOutpre :XU Nit? (Query Only) This query indicates the horizontal u nits of the x-axis of the waveform rec ord transferred using the CURVe? query . T ypically , this value is &quot…

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Commands Listed in Alphabetical Order
The type of wave
form that is being transferred in turn determines which window
will display it on the instrument screen: (the time domain window or frequency
domain window). Both the analog and RF-TD arguments specify the time domain
window; the RF_RD argument specifies the frequency domain window.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
No RF time domain waveforms are available for the MDO3000 series.
Group
Waveform Transfer
Syntax
WFMOutpre:WFMTYPe?
Returns
ANALOG, RF_FD or RF_TD
Examples
WFMOutpre:WFMTYPe? might return RF_FD, which indicates that the outgoing
waveform is an RF frequency domain waveform (RF_AVErage, RF_MAXHold,
RF_MINHold, or RF_NORMal).
WFMOutpre:XINcr? (Query Only)
This query returns the horizontal point spacing in units of time (seconds),or
frequency (hertz) between data points in the waveform record transferred using
the
:CURVe? query. This value corresponds to the sampling interval.
If the waveform specified by the DATa:SOUrce command is not turned on, an
error will be 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:XINcr?
Related Commands
DATa:SOUrce,
WFMOutpre:XUNit?
Examples
WFMOUTPRE:XINCR? might return :WFMOUTPRE:XINCR 10.0000E-6
indicating that the horizontal sampling interval is 10 µs/point.
2-970 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
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