MDO3000 Programmer Manual.pdf - 第397页
Commands Listed in Alphabetical Order number that app ears on the display next to the red R inside a triangle when markers areon. If all markers are off, the value returned will be the last value disp layed. Conditions M…
Commands Listed in Alphabetical Order
of the screen. T
his applies when markers are turned on (using the command
MARKER:PEAK:STATE or MARKER:MANual). This is equivalent to the 'R' to
Center side menu button in the front panel Markers menu.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:REFERence CENTER
Examples
MARKER:REFERence CENTER moves the Reference Marker location to the center
of the screen.
MARKER:REFERence:AMPlitude? (Query Only)
This query returns the actual amplitude (vertical) value of the Reference Marker
in user-set units. This value indicates the absolute amplitude of the Reference
Marker, regardless of whether the other markers are manual or automatic.
This data is equivalent to the number that appears on the display next to the red R
inside a triangle when markers are turned on. If all markers are turned off, the
value returned will be the last value displayed.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:REFERence:AMPlitude?
Related Commands
RF:UNIts
Examples
MARKER:REFER:AMP? might return -65.6218, indicating an amplitude value
of -65.6218 dBm.
MARKER:REFERence:FREQuency? (Query Only)
This query returns the frequency of the Reference Marker, in Hz, when
the frequency domain trace markers are on (using either the command
MARKER:PEAK:STATE or MARKER:MANual). This data is equivalent to the
2-366 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
number that app
ears on the display next to the red R inside a triangle when markers
areon. If all markers are off, the value returned will be the last value displayed.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:REFERence:FREQuency?
Examples
MARKER:REFERence:FREQuency? might return 1.6830E+9.
MARKER:TYPe
This command specifies the marker type (either DELTa or ABSolute). An absolute
marker shows the frequency and amplitude at the location of the marker. A delta
marker shows the frequency and amplitude of the marker relative to the Reference
Marker. The Reference Marker shows the absolute frequency and amplitude,
regardless of this command. The marker amplitude measurements are in dBm for
absolute, or in dBc (dB below carrier amplitude) for delta.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:TYPe {DELTa|ABSo lute}
MARKER:TYPe?
Related Commands
MARKER:PEAK:STATE, MARKER:PEAK:MAXimum, RF:UNIts
Arguments
DELTa specifies to display the frequency and amplitude of the markers relative
to the Reference Marker. The relative amplitude is in dBc (dB below carrier
amplitude); the relative frequency is in Hz.
ABSolute specifies to display the actual frequency and amplitude of each marker.
The absolute amplitude is in user-set units; the absolute frequency is in Hz.
Examples
MARKER:TYPe DELta changes the marker type to delta.
MARKER:TYPe? might return ABSOLUTE.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-367
Commands Listed in Alphabetical Order
MASK:COPy:SO
Urce
This command specifies the mask that is to be copied to a user-defined custom
mask. The specified mask is not copied until after the
MASK:COPy:USER
command is ex
ecuted. Note that in addition to a standard mask,
LIMit, US ER
and NONe can also be specified.
NOTE. The only argument enumerations available for the MDO3000 series
models are
CUSTom | LIMit | NONe | USER
.
A series of examples showing how to use mask commands for typical tasks
is included in an appendix. (See page E-1, Mask/Limit Command Sequence
Examples.)
Conditions
This command requires a DPO4LMT application module for 4000 series models,
and an MDO3LMT application module for MDO3000 series models.
Group
Mask
Syntax
MASK:COPy:SOUrce
{DS1|DS1A|DS1C|DS2|DS3|DS4NA|DS4XNA|STS1Pulse|STS1Eye|STS3
|STSX3|CLOCKCoax|CLOCKSymmetrical|DSOContra|DSODouble
|DSOSingle|DSOTiming|G703DS1|DS1Rate|DS2RATECoax
|DS2RATESymmetrical|G703DS3|DS3Rate|E1Coax
|E1Symmetrical|E2|E3|HST1|HST2|HST3|HST4|HST5|HST6|NONe|USER
|LIMit}
MASK:COPy:SOUrce?
Related Commands
MASK:CUSTom
MASK:COPy:USER
Arguments
ANSI T1.102:
DS1 –DS11.544Mb/s
DS1A – DS1A 2.048 Mb/s
DS1C – DS1C 3.152 Mb/s
DS2 – DS2 6.312 Mb/s
DS3 –DS344.736Mb/s
DS4NA – DS4NA 139.26 Mb/s
2-368 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual