MDO3000 Programmer Manual.pdf - 第567页

Commands Listed in Alphabetical Order *PSC This command speciﬁes the power-on sta tus ﬂag that controls the automatic power-on h andling of the DESER, SRER, and ESER registers. When *PSC is true, the DES ER register is s…

Commands Listed in Alphabetical Order

HARMonics Use t

he harmonics functions to obtain the frequency spectrum of the

source waveform and associated measurement values. Harmonic measurements

can help one perform in-depth troubleshooting of power quality problems.

RIPPle Use the ripple functions to obtain measurements and statistics for the

AC components of the acquired waveform. Ripples are often found on top of a

large DC signal.

MODULationanalysis Use the modulation functions to obtain a trend plot of a

measurement value across the acquired waveform. This is useful for showingthe

variations in the modulated switching signal.

DESKew Run the deskew procedure to match the delays through the probes.

Different probes introduce different delays between the probe tip and the

oscilloscope. Many oscilloscope users do not have to worry about this because

they use

the same type of probe on all channels. Power measurement users,

however, frequently use both a voltage probe and a current probe. A current

probe typically has a larger delay than a voltage probe, so setting deskew values

becomes important.

Examples

POWER:TYPE HARMonics sets the measurement type to Harmonics.

POWER:TYPE? might return POWER:T YPE NON indicating that no measurement

type is set.

POWer:VOLTAGESOurce

This command speciﬁes the voltage source for the power application.

Conditions

This command requires a DPO4PWR application module for 4000 series models,

or an MDO3PWR application module for MDO3000 series models.

Group

Power

Syntax

POWer:VOLTAGESOurce {CH1|CH2|CH3|CH4|REF1|REF2|REF3|REF4}

POWer:VOLTAGESOurce?

Arguments

CH1–CH4 or REF1–REF4 sets the analog channel 1–4 or reference waveform

1–4 as the voltage source.

Examples

POWER:VOLTAGESOURCE CH1 sets the voltage source as CH1.

POWER:VOLTAGESOURCE? might return POWER:VOLTAGESOURCE CH1 indicating

that the voltage source is set to CH1.

2-536 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual

Commands Listed in Alphabetical Order

*PSC

This command speciﬁes the power-on status ﬂag that controls the automatic

power-on handling of the DESER, SRER, and ESER registers. When *PSC is

true, the DES

ER register is set to 255 and the SRER and ESER registers are set

to 0 at power-on. When *PSC is false, the current values in the DESER, SRER,

and ESER registers are preserved in nonvolatile memory when power is shut off

and are restored at power-on.

Group

Status and Error

Syntax

*PSC {O FF|ON|NR1>}

*PSC?

Related Commands

DESE, *ESE, FACtory, *RST, *SRE

Arguments

OFF sets the power-on status clear ﬂag to false.

ON sets the power-on status clear ﬂag to true.

<NR1> = 0 sets the power-on status clear ﬂag to false. This disables the power-on

clear allowing the oscilloscope to possibly assert SRQ after power-on; anyother

value sets the power-on status clear ﬂag to true, enabling the power-on status clear

preventing any SRQ assertion after power on.

Examples

*PSC 0 sets the power-on status clear ﬂag to false.

*PSC? might return 1 to indicate that the power-on status clear ﬂag is set to true.

*PUD

This command speciﬁes a string of Protected User Data. This data is protected

by the PASSWord command. You can modify it only by ﬁrst entering the correct

password. This password is not necessary to query the data.

Group

Status and Error

Syntax

*PUD {< Block>|<QString>}

*PUD?

Related Commands

PASSWord

MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-537

Commands Listed in Alphabetical Order

Arguments

<Block> is a blo

ck containing up to 300 ASCII characters.

<QString> is a string containing up to 300 ASCII characters.

Examples

*PUD #229This oscillosc ope belongs to me stores the string "This

oscilloscope belongs to me" in the user protected data area.

*PUD? might return #221PR OPERTY OF COMPANY X

*RCL (No Query Form)

This command restores the state of the oscilloscope from a copy of the settings

stored in memory (The settings are stored using the *SAV command).

Group

Save and Recall

Syntax

*RCL <N R1>

Related Commands

FACtory, *LRN?, RECAll:SETUp, *RST, *SAV, SAVe:SETUp

Arguments

<NR1> is a value in the range from 1 to 10, which speciﬁes a saved setup storage

location.

Examples

*RCL 3 restores the oscilloscope from a copy of the settings stored in memory

location 3.

REBOOT (No Q uery Form)

Reboots the system after a short delay, emulating the front panel power button

push. The system will power back on after a 5 second delay.

Group

Miscellaneous

Syntax

REBOOT

RECAll:MASK (No Query Form)

This command recalls the mask from a speciﬁed ﬁle that was saved to the current

working directory using the SAVe:MASK command.

2-538 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual