MDO3000 Programmer Manual.pdf - 第785页

Commands Listed in Alphabetical Order Group V ertical Syntax SELect:{BUS<x >|B<x>} {OFF| ON|0|1} SELect:{BUS<x >|B<x>}? Arguments ON or 1 turns the speciﬁed waveform display on. OFF or 0 turns the…

Commands Listed in Alphabetical Order

End—endvaluei

n percent of record

Focus — focus value in percent of record

X value — horizontal value of the focus point in the mark’s waveform units

Y value — vertical value of the focus point in the mark’s waveform units

Delta X value — difference from the Reference Marker.

Delta Y value — difference from the Reference Marker.

If no user t

ime marks have been set, the query returns

NONe,0.0E0,0.0E0,0.0E0,0.0E0,0.0E0,0.0E0,0.0E0.

Examples

SEARCH:SPECTral:LIST? might return

RF_NORMAL,50.2000,50.2000,50.2000,100.0000E+6,3.6624,0.0E+0,0.0E+0;

RF_NORMAL,70.2000,70.20

00,70.2000,200.0000E+6,-45.7444,0.0E+0,0.0E+0;

RF_NORMAL,90.2000,90.2000,90.2000,300.0000E+ 6,-43.6428,0.0E+0,0.0E+0

This indicates that the markers automatically mark three peaks on the RF Normal

trace. Each marker is delineated by a semicolon. The values that follow each

RF_NORMAL record are Start, End, Focus, X value, Y value, Delta X value,

Delta Y value, respectively.

SELect? (Query Only)

Queries which waveforms are displayed.

Group

Vertical

Syntax

SELect?

Examples

SELECT?? might return the following

:SELECT:BUS1 0;BUS2 0;CH1 1;CH2 0;CH3 0;CH4 0;MAT H 0;REF1

0;REF2 0;REF3 0;REF4 0;CONTROL CH1

SELect:{BUS<x>|B<x>}

This command turns on and off the display of the waveform for <x>, where x is

the bus number 1-4, 1-3 for the MDO4000C and 1-2 for the MDO3000. The

query returns whether the channel is on or off but does not indicate whether it is

the speciﬁed waveform.

2-754 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual

Commands Listed in Alphabetical Order

Group

Vertical

Syntax

SELect:{BUS<x>|B<x>} {OFF|ON|0|1}

SELect:{BUS<x>|B<x>}?

Arguments

ON or 1 turns the speciﬁed waveform display on.

OFF or 0 turns the speciﬁed waveform display off.

SELect:CH<x>

Turns the display of the channel <x> waveform on or off, where <x > is the

channel number, which can be 1–4. This command also resets the acquisition.

The query returns whether the channel is on or off but does not indicate whether

it is the speciﬁed waveform.

Group

Vertical

Syntax

SELect:CH<x> {ON|OFF|1| 0}

SELect:CH<x>?

Arguments

ON or 1 turns on the display of the speciﬁed waveform. This waveform also

becomes the selected waveform.

OFF or 0 turns off the display of the speciﬁed waveform.

Examples

SELECT:CH2 ON turns the channel 2 waveform display on, and selects channel 2.

SELECT:CH1? might return :SELECT:CH1 1 indicating that channel 1 is being

displayed.

SELect:CONTROl

This command selects a waveform to be used with channel-related commands

such as the cursor commands. In addition to selecting the waveform, it turnson

the display of the waveform, if it wasn’t on already.

Group

Vertical

Syntax

SELect:CONTROl {CH1|CH2|CH3|CH4

|MATH|REF1|REF2|REF3|REF4|BUS1|BUS2|BUS3|BUS4|D0|D1|D2|D3|D4

MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-755

Commands Listed in Alphabetical Order

|D5|D6|D7|D8|

D9|D10|D11|D12|D13|D14|D15|RF_AMPlitude|RF_FREQuency

|RF_PHASe|RF_NORMal|RF_AVErage| RF_MAXHold|RF_MINHold}

SELect:CONTR

Ol?

Arguments

CH1–4 speciﬁes a channel waveform as the waveform affected by the front-panel

controls.

MATH speciﬁes the math waveform as the waveform that is affected by the

front-panel controls.

BUS1–4 speciﬁes a bus waveform as the waveform affected by the front-panel

controls.

D0–D15 speciﬁes a digital waveform as the waveform affected by the front-panel

controls. (MSO/MDO4000/B models only as well as MDO3000 and MDO400C

models with option MDO3MSO or MDO4MSO installed.)

RF_AMPlitude|RF_FREQuency|RF_PHASe (MDO4000/B/C models only)

and

RF_NORMal|RF_AVErage|RF_MAXHold| RF_MINHold specify an RF

trace as the waveform affected by the front-panel controls.

Returns

NONE if all the channels are turned off. NONE is ignored on input.

Examples

SELECT:CONTR

OL CH2

resets acquisition displays on channel 2, and causes the

selected waveform to be the implied object of waveform commands.

SELECT:CONT

ROL?

might return :SELECT:CONTROL MATH indicating that math

is the implied object of waveform commands.

SELect:DAll (No Query Form)

This command turns on or off all digital channels (D0 — D15).

NOTE. This command applies only to MSO/MDO4000/B models only as well

as MDO3000 and MDO400C models with option MDO3MSO or MDO4MSO

installe

Group

Vertical

Syntax

SELect:DAll {ON|OFF|0| 1}

2-756 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual