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
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