MDO3000 Programmer Manual.pdf - 第286页

Commands Listed in A lphabetical Order Syntax CONFIGuration :RF:NUMCHANnels? Related Commands (See page 2-47, RF Command Gr oup .) Returns <NR1> CONFIGuration:ROSC? (Query Only) This query returns a boolean value t…

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Commands Listed in Alphabetical Order
Returns
<NR1> = 1 if the a
dvanced RF feature is present.
<NR1> = 0 if the advanced RF feature is not present.
CONFIGuration:RF:BANDWidth? (Query Only)
This query returns the bandwidth, in Hz, for the RF channel(s). If there are no
RF channels, the value returned is 0.
Group
Configuration
Syntax
CONFIGuration:RF:BANDWidth?
Returns
Floating point number that represents the bandwidth, in Hz, for the RF channel.
CONFIGuration:RF:MAXBANDWidth? (Query Only)
This query returns the maximum bandwidth, in hertz, for RF channels. If no
RF channels are present, the query returns 0. Enabling this feature requires an
MDO4000/B/C Series oscilloscope and installation of a MDO4TRIG application
module.
Group
Configuration
Syntax
CONFIGuration:RF:MAXBANDWidth?
Related Commands
(See page 2-47, RF Command Group .)
Returns
<NR3>, which is a floating point number that represents the maxi
mum RF
bandwidth, in hertz.
CONFIGuration:RF:NUMCHANnels? (Query Only)
This query returns the number of RF channels present. If no RF channels are
present, the query returns 0. )
Group
Configuration
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-255
Commands Listed in Alphabetical Order
Syntax
CONFIGuration
:RF:NUMCHANnels?
Related Commands
(See page 2-47, RF Command Group .)
Returns
<NR1>
CONFIGuration:ROSC? (Query Only)
This query returns a boolean value to indicate whether the instrument has an
external reference oscillator (ROSC) input.
Group
Configuration
Syntax
CONFIGuration:ROSC?
Returns
<NR1> = 1 if a ROSC input is present.
<NR1> = 0 if a ROSC input is not present.
CURSor?
Returns all of the current cursor settings.
Group
Cursor
Syntax
CURSor?
Examples
CURSOR? might return the following as the current cursor settings:
:CURSOR:FUNCTION SCREEN;HBARS:POSITION1 0.0000;POSITI
ON2
0.0000;UNITS BASE;:CUR SOR:MODE INDEPENDENT;VBARS:POSITION1
-19.0006E-6;POSITION2 -18.9994E-6;UNITS SECONDS
CURSor:DDT? (Query Only)
Returns the cursor deltaY/deltaT (dY/dT) readout.
Conditions
This command requires a DPO4PWR application m
odule.
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Commands Listed in Alphabetical Order
Group
Cursor
Syntax
CURSor:DDT?
Examples
CURSOR:DDT? might return :CU RSOR:DDT -166.6670 indicating that the
cursor dV/d
t read out is -166.6670
CURSor:FUNCtion
This command selects the cursor mode. In Waveform mode, the cursors are
attached to the selected waveform; in Screen mode, cursors are attached to the
display area .
Group
Cursor
Syntax
CURSor:FUNCtion {SCREEN|WAVEform|OFF}
CURSor:FUNCtion?
Related Commands
CURSor:SOUrce,
CURSor:MODe
Arguments
SCREEN specifies to display both horizontal and vertical bar cursors, which
measure the selected waveform in horizontal and vertical units. Use these cursors
to measure anywhere in the waveform display area.
WAVEform specifies to display the paired cursors in YT display format for
measuring waveform amplitude and time. In XY and XYZ format, these cursors
indicate the amplitude positions of an XY pair (Ch1 vs Ch2 voltage, where Ch1is
the X axis and Ch2 is the Y axis) relative to the trigger.
OFF removes the cursors from the display.
Examples
CURSOR:FUNCTION WAVEFORM selects the paired cursors for measuring waveform
amplitude and time.
CURSOR:FUNCTION? might return :CUR Sor:FUNCtion SCREEN indicating that
the screen cursors are currently selected.
CURSor:HBArs? (Query Only)
Returns the current settings for the horizontal bar cursors.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-257