MDO3000 Programmer Manual.pdf - 第90页

Command Groups T able 2-38: Save and Recall Commands (cont.) Command Description SA V e:WA VEform:G A TIng Speci ﬁ es whether save waveform operations shoul d save the entire w aveform or a speci ﬁ ed portion of the wave…

Command Groups

NOTE. Analog, d

igital, and RF waveforms and traces and those waveforms and

traces derived from them ( such as math and reference) can be saved to an ISF

ﬁle. When saving all channels in ISF format, a group of ﬁles will be saved.

Each will have the same value for XXXX, but the YYY values will be set to the

different channels that were turned on when the Save All Waveforms operation

was performed.

The oscilloscope can save, but not recall, RF acquisitions as .TIQ ﬁles. You can

import .TIQ ﬁles into Tektronix SignalVu-PC software (PC based), SignalVu

software (

oscilloscope based), RSAVu software (PC based) or into a Tektronix

real-time spectrum analyzer for pulse analysis and demodulation analysis.

Table 2-3

8: Save and Recall Commands

Command

Descript

ion

FACtory Resets the oscilloscope to factory default s ettings

*RCL

Recalls

saved oscilloscope settings

RECAll:SETUp

Recall

s saved oscilloscope settings

RECAll:SETUp:DEMO<x> This command recalls one of the 6 speciﬁed built-in demonstration setups of RF functionality.

<x> can be 1 through 6. The demonstrations include 1. Multiple Peaks, 2. spectrogram, 3.

VCO/P

LL Turn On, 4. ASK Modulation, 5. Frequency Hop and 6. Capture BW.

RECA

ll:WAVEform

This

command (no query form) recalls a stored waveform to a reference memory location,

and, for instruments with the arbitrary waveform feature, to arbitrary waveform edit memory

(EMEM). Only the ﬁrst waveform in the .CSV ﬁle is recalled for multiple waveform .CSV ﬁ les.

Reca

ll of digital waveforms (D0 through D15) is not supported.

*SA

Sto

res the state of the oscilloscope to a s peciﬁed memory location

Ve:ASSIgn:TYPe

is command speciﬁes the assignment of the save button

Ve:EVENTtable:{BUS<x>|B<x>}

ves event table data from bus<x> to a speciﬁed ﬁle

AVe:IMAGe

aves a capture of the screen image to the speciﬁed ﬁle

AVe:IMAGe:FILEFormat

his command speciﬁ es the ﬁle format to use for saving screen images. The ﬁle format is

not automatically determined by the ﬁle name extension. You need to choose a ﬁle name

with an extension w hich is consistent with the selected ﬁle format

SAVe:IMAGe:INKSaver This command speciﬁes the current inksaver setting for the SAVe:IMAGe command

SAVe:IMAGe:LAYout This command speciﬁes the layout to use for saved screen images

SAVe:SETUp Saves the state of the oscilloscope to a speciﬁed memory location or ﬁle

SAVe:WAVEform This command saves the speciﬁed w aveform to the speciﬁed destination reference memory

slot, or saves the speciﬁed waveform(s) to the speciﬁed destination ﬁle. The same function

can be accomplished from the front panel Menu->save waveform m enu. The type of ﬁle

saved is dependent upon the SAVe:WAVEform:FILEFormat command.

SAVe:WAVEform:FILEFormat This command speciﬁes the format for saving waveforms.

This command speciﬁes the ﬁle format to be used when saving waveforms — either an

internal format, .ISF, or an external comma-delimited spreadsheet format, .CSV, that

includes waveform header and timing information.

SAVe:WAVEform:FILEFormat:

RF_BB_IQ

This command speciﬁes the ﬁle format for saving the RF baseband I & Q data. The default

format is TIQ.

MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-59

Command Groups

Table 2-38: Save and Recall Commands (cont.)

Command

Description

SAVe:WAVEform:GATIng Speciﬁes whether save waveform operations should save the entire w aveform or a speciﬁed

portion of the waveform

SETUP<x>:DATE? Returns the date when the speciﬁed oscilloscope setup was saved

SETUP<x>:LABEL This command speciﬁes the speciﬁed oscilloscope setup label

SETUP<x>:TIME ? Returns the time when the speciﬁed oscilloscope setup was saved

2-60 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual

Command Groups

Search Comman

dGroup

The search commands let you analyze your source waveform record for conditions

speciﬁed by a search’s criteria. Once these criteria are matched, the oscilloscope

places a sear

ch mark at that location in the waveform record. You can then

navigate or save the marks. (See page 2-30, Mark Command Group.)

When perfor

ming an edge, pulse width, runt, transition (rise/fall time), time-out,

or bus search, you can use only one waveform at a time.

When perfo

rming a logic or a setup/hold search, you can use any or all of the

displayed waveforms at the same time. For example, with a logic search, you can

search for instances when CH1 is high and CH2 is low. Likewise, with a setup

and hold search, you can search for instances when the clock source is CH1 and

the data sources are CH2 and CH3.

With pulse width searching, the oscilloscope can search for pulses with widths

less than, greater than, equal to, or not equal to a speciﬁed time. Additionally, it

can search for pulses with widths within, or outside of a range of two different

speciﬁ

ed times. Searching can take place on either positive or negative pulses.

Searches on RF waveforms can only use time domain traces (RF Amplitude vs.

Time,

RF Frequency vs. Time and RF Phase vs. Time). (MDO4000/B/C only.)

A series of example command sequences showing different searches and triggers

is in

cluded as an appendix. (See page F-1, Search and Trigger Command

Sequence Examples.)

Searching using

Thr

esholds

All search types except bus searches use thresholds, which are vertical values that

e source waveform must cross in order for a mark to be placed. For example, if

you set the search type to EDGE, and the search source to CH1, the search’s slope

to RISE, and the search’s threshold value to 1.5V, then that search will ﬁnd all

places where CH1 transitions from below 1.5 volts to above 1.5 volts.

Each individual search source waveform has two threshold values: a low threshold

and a high threshold. Note that if you change the search source waveform, you

must explicitly set the thresholds. For example, if you set the search’s CH1lower

threshold to 1.5 volts, and then decide to change the search’s source waveform to

CH2, you must then explicitly set CH2’s lower threshold value to the value you

would like (it will not automatically be 1.5 volts). If you have an edge search set

up on CH1 with the threshold you’d like, then decide to change to a logic search

and change the threshold on CH1 to ﬁt your logic search, and then change back to

an edge search, your initial threshold setting on the edge search will be lost.

MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-61