MDO3000 Programmer Manual.pdf - 第604页

Commands Listed in A lphabetical Order Syntax RF:RF_AMPlitu de:LABel <QString> RF:RF_AMPlitu de:LABel? Related Commands RF:RF_FREQuency:LABel , RF:RF_PHASe:LABel , RF:LABel Arguments <QString> is a quoted str…

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Commands Listed in Alphabetical Order
(e.g. 10000, 20
000, 50000). To specify the RBW ratio that will be used when the
mode is set to automatic, use the command RF:SPANRbwratio.
MANual allows
you to set the resolution bandwidth, independently from the span,
using the command RF:RBW.
Examples
RF:RBW:MODe MANual sets the mode to manual.
RF:RBW:MODe? might return AUTO, the default.
RF:REFLevel
This command sets the Reference Level of the RF input. The Reference Level can
either be specified as a numeric floating point value, or set automatically.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
RF:REFLevel {<NR3>|AUTO }
RF:REFLevel?
Arguments
<NR3> is a floating point number.
AUTO directs the oscilloscope to automatically calculate and set the Reference
Level. This is a one-time calculation based on the content of the RF input signal.
It is not a “mode”.
Examples
RF:REFLevel –10 sets the Reference Level to –10 dBm.
RF:REFLevel? might return 0.0E+0, indicating a Reference Level of 0 dBm.
RF:RF_AMPlitude:LABel
This command specifies the label for the RF Amplitude vs. Time trace.
Conditions
MDO4000/B/C models only.
Group
RF
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-573
Commands Listed in Alphabetical Order
Syntax
RF:RF_AMPlitu
de:LABel <QString>
RF:RF_AMPlitude:LABel?
Related Commands
RF:RF_FREQuency:LABel, RF:RF_PHASe:LABel, RF:LABel
Arguments
<QString> is a quoted string of up to 32 characters.
RF:RF_AMPlitude:VERTical:POSition
This command specifies the vertical position of the RF Amplitude vs. Time trace.
The position value determines the vertical graticule location at which thetrace
is displayed. Increasing the position value of a waveform causes the waveform
to move up. Decreasing the position value causes the waveform to move down.
The minimum is -50 divisions and the maximum is 50 divisions with a resolution
of 0.02 divisions.
Conditions
MDO4000/B/C models only.
Group
RF
Syntax
RF:RF_AMPlitude:VERTical:POSition <NR3>
RF:RF_AMPlitude:VERTical:POSition?
Arguments
<NR3> is a floating point number.
Examples
RF:RF_AMPlitude:VERTical:POSition —1 sets the vertical position of the
RF Amplitude vs. Time trace to -1 division.
RF:RF_AMPlitude:VERTical:POSition? might return 0.0E+0, indicating a
vertical position of 0.
RF:RF_AMPlitude:VERTical:SCAle
This command specifies the vertical scale for the RF Amplitude vs. Time trace.
For a signal with constant amplitude, increasing the scale causes the waveform to
be displayed smaller. Decreasing the scale causes the waveform to be displayed
larger.
Conditions
MDO4000/B/C models only.
2-574 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Group
RF
Syntax
RF:RF_AMPlitude:VERTical:SCAle <NR3>
RF:RF_AMPlitude:VERTical:SCAle?
Arguments
<NR3> is a floating point number that specifies the vertical scale.
Examples
RF:RF_AMPlitude:VERTical:SCAle 50E-3 sets the vertical scale to
50mV/division.
RF:RF_AMPlitude:VERTical:SCAle? might return 10.0000E-3, indicating
that the vertical scale has been set to 10mV/division.
RF:RF_AVErage:COUNt? (Query Only)
This query returns the number of RF traces that have been accumulated to create
the RF Average frequency domain trace.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
RF:RF_AVErage:COUNt?
Returns
This command returns an integer that ranges from 0 to the number of acquisitions
specified in the command RF:RF_AVErage:NUMAVg.
Examples
RF:RF_AVErage:COUNt? might return 15, indicating that 15 traces have been
accumulated to create the RF Average trace.
RF:RF_AVErage:NUMAVg
This command specifies the number of acquisitions to be used when creating the
RF Average frequency domain trace, which displays the average of values from
multiple acquisitions at each trace point. The range is 2 – 512, in exponential
increments.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-575