MDO3000 Programmer Manual.pdf - 第389页

Commands Listed in Alphabetical Order Conditions MDO3000, MDO40 00/B, or MDO4000C models with option SA3 or SA6 only . Group RF Syntax MARKER:MANual {OFF|ON|0 |1} MARKER:MANual ? Related Commands MARKER:M<x>:AMPLit…

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Commands Listed in Alphabetical Order
RF_AMPlitude|
RF_FREQuency|RF_PHASe
– RF time domain traces
(MDO4000/B/C models only.)
The next 7 <NR3
> arguments are time mark parameters as follows:
Start – start value in percentage of record
End – end value in percentage of record
Focus – focus value in percentage of record
X value – horizontal value of the focus point in the mark’s waveform units
(This is ignored in the command form – use any value.)
Y value – vertical value of the focus point in the mark’s waveform units (This
is ignored in the command form – use any value.)
Delta X value – always 0, since there is no time-domain reference mark. (This
is ignored in the command form – use any value.)
Delta Y value – always 0, since there is no time-domain reference mark. (This
is ignored in the command form – use any value.)
Returns
If no user time marks have been set, the query returns
NONe,0.0E0,0.0E0,0.0E0,0.0E0,0.0E0,0.0E0,0.0E0.
Examples
MARK:USERLIST
CH1,62.5000,62.5000,62.5000,0E+0,0E+0,0.0E+0,0.0E+0;USERLIST
CH1,79.5000,79.5000,79.5000,0E+0,0E+0,0.0E+0,0.0E+0 sets two
marks on the Channel 1 waveform.
MARK:USERLIST? might return
CH1,62.5000,62.5000,62.5000,5.0000E-6,infE-315,0.0E+0,0.0E+0;USERLIST
CH1,79.5000,79.5000,79.5000,11.8000E-6,infE-315,0.0E+0,0.0E+0, indicating
t
hat two marks were set on the Channel 1 waveform.
MARKER:MANual
This command switches on or off the manual markers a and b that are available
for frequency domain traces.
Two manual markers are available for measuring non-peak areas of interest.The
absolute measurements are in dBm; the relative measurements (relative to the
Reference Marker) are in dBc (dB relative to the carrier).
When the manual markers are turned off, and the peak markers are turned on, the
Reference Marker is placed on the highest amplitude peak. With manual markers
on, the Reference Marker is placed at the a manual marker. The manual markers
use the units specified with the command RF:UNIts.
2-358 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Conditions
MDO3000, MDO40
00/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:MANual {OFF|ON|0 |1}
MARKER:MANual?
Related Commands
MARKER:M<x>:AMPLitude:ABSolute?, MARKER:M<x>:AMPLitude:
DELTa?, MARKER:M<x>:FREQuency:DELTa?, MARKER:M<x>:FREQuency:
ABSolute
Arguments
OFF or 0 turns the manual markers off.
ON or 1 turns the manual markers on.
Examples
MARKER:MANual 1 turns on the manual markers.
MARKER:MANual? might return 0, indicating that the manual markers are turned
off.
MARKER:M<x>:AMPLitude:ABSolute? (Query Only)
This query returns the actual amplitude (vertical) value of either of the two
manual markers that are available for frequency domain traces, in user-set units.
M<x> can be either M1, which specifies manual marker a,orM2,whichspecifies
manual marker b.(UseRF:UNIts to specify the units.)
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
MARKER:M<x>:AMPLitude:ABSolute?
Related Commands
MARKER:MANual, MARKER:M<x>:AMPLitude:DELTa?, MARKER:M<x>:
FREQuency:DELTa?, MARKER:M<x>:FREQuency:ABSolute
Examples
MARKER:M2:AMPLitude:ABSolute? might return -1.0E+01, indicating a
marker amplitude of -10 dBm.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-359
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