MDO3000 Programmer Manual.pdf - 第391页

Commands Listed in Alphabetical Order Related Commands MARKER:MANual , MARKER:M<x>:AMPLitude:ABSolute? , MARKER:M<x>:AMPLitude:DEL T a? , MARKER:M<x>:FREQuency:DEL T a? Arguments <NR3> i safl o a t…

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Commands Listed in Alphabetical Order
MARKER:M<x>:
AMPLitude:DELTa? (Query Only)
This query returns the delta amplitude (vertical) value of either of the two
manual markers that are available for frequency domain traces, in relationtothe
Reference Ma
rker. M<x> can be either M1, which specifies manual marker a,or
M2, which specifies manual marker b.
NOTE. Querying the delta of M1 will always return 0, because M1 is always the
Reference Marker when manual markers are turned on.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:M<x>:AMPLitude:DELTa?
Related Commands
MARKER:MANual, MARKER:M<x>:AMPLitude:ABSolute?,
MARKER:M<x>:FREQuency:DELTa?, MARKER:M<x>:FREQuency:ABSolute
Examples
MARKER:M2:AMPLitude:DELTa? might return –5.0E+00, indicating that marker
b is –5 dBc below marker a, which is also the Reference Marker.
MARKER:M<x>:FREQuency:ABSolute
This command specifies the actual frequency (horizontal) value of either ofthe
two manual markers that are available for frequency domain traces. M<x> can
be either M1, which specifies manual marker a, or M2, which specifies manual
marker b.
NOTE. Markers cannot be placed outside the frequency range defined by
RF:STARt and RF:STOP.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:M<x>:FREQuency:ABSolute <NR3>
MARKER:M<x>:FREQuency:ABSolute?
2-360 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Related Commands
MARKER:MANual
, MARKER:M<x>:AMPLitude:ABSolute?,
MARKER:M<x>:AMPLitude:DELTa?, MARKER:M<x>:FREQuency:DELTa?
Arguments
<NR3> isafloa
ting point value that indicates the actual frequency of either of the
two manual markers.
Examples
MARKER:M1:FREQuency:ABSolute 1.50E+9 sets the absolute frequency
value of manual marker a to 1.5 GHz.
MARKER:M2:FREQuency:ABSolute? might return 1.50E+9, indicating that the
absolute frequency value of manual marker b has been set to 1.5 GHz.
MARKER:M<x>:FREQuency:DELTa? (Query Only)
This query returns the delta frequency (horizontal) value of either of the two
manual markers that are available for frequency domain traces, in relationtothe
Reference Marker. M<x> can be either M1, which specifies manual marker a,or
M2, which specifies manual marker b.
The manual marker readouts use the units specified with the command RF:UNIts.
NOTE. Querying the delta of M1 will always return 0, because M1 is always the
Reference Marker when manual markers are turned on.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:M<x>:FREQuency:DELTa?
Related Commands
MARKER:MANual, MARKER:M<x>:AMPLitude:ABSolute?,
MARKER:M<x>:AMPLitude:DELTa?, MARKER:M<x>:FREQuency:ABSolute
Examples
MARKER:M2:FREQuency:DELTa? might return 1.00E+08, indicating that marker
b is 100 MHz to the right of the Reference Marker.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-361
Commands Listed in Alphabetical Order
MARKER:M<x>:
NOISEDensity? (Query Only)
This command returns the noise density of the RF_NORMal trace at the specified
marker position in <RF Units>/Hz units, where <RF Units> are the units specified
by the comman
d RF:UNIts.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:M<x>:NOISEDensity?
Related Commands
MARKER:MANual, MARKER:M<x>:PHASENoise?
Returns
floating point number
Examples
MARKER:M2:NOISEDensity? might return –133.2350, indicating noise density
of –133.2350 dBm/Hz at the marker position.
MARKER:M<x>:PHASENoise? (Query Only)
This command returns the phase noise of the RF_NORMal trace at the specified
marker position in dBc/Hz units.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:M<x>:PHASENoise?
Related Commands
MARKER:MANual, MARKER:M<x>:NOISEDensity?
Returns
floating point number
Examples
MARKER:M2:PHASENoise? might return –60.1289, indicating phase noise of
–60.1289 dBc/Hz at the marker position.
2-362 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual