Command Groups
Table 2-37: RF Commands (cont.)
Item Description
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 w aveform to be displayed larger.
RF:RF_AVErage:COUNt? This query returns the number of RF traces that have been accumulated to create an RF
Average frequency domain trace.
RF:RF_AVErage:NUMAVg
This command specifies the number of acquisitions to be used when creating an RF Average
frequency domain trace, which displays the average of values from multiple acquisitions at
each trace point. The default is 16. The range is 2 – 512, in exponential increments.
RF:RF_FREQuency:LABel This command specifies the label for the RF Frequency vs. Time trace.
RF:RF_FREQuency:VERTical:
POSition
This command specifies the vertical position for the R F Frequency vs. Time trace. The position
value determines the vertical graticule location at which the trace is displayed. Increasing the
position value of a waveform causes the w aveform to move up. Decreasing the position value
causes the waveform to move down. The minimum is -50 divisions and the m aximum is
50 divisions with a resolution of 0 .02 divisions.
RF:RF_FREQuency:VERTical:
SCAle
This command specifies the vertical scale for the RF Frequency vs. Time trace. For a signal
with constant amplitude, increasing the scale causes the waveform to be displayed smaller.
Decreasing the scale causes the w aveform to be displayed larger.
RF:RF_PHASe:LABel This command specifi es the label for the RF Phase vs. Time trace.
RF:RF_PHASe:REFERence:
DEGrees
Sets or returns the phase, in degrees, at the trigger point for the RF_PHASe time domain trace.
RF:RF_PHASe:VERTical:POSition This command specifies the vertical position for RF Phase vs. Time trace. The position value
determines the vertical graticule location at whic h the trace is displayed. Increasing the position
value of a waveform causes the waveform to m ove 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.
RF:RF_PHASe:VERTical:SCAle This command specifies the vertical scale for RF Phase vs. Time trace. For a signal with
constant amplitude, increasing the scale causes the w aveform to be displayed smaller.
Decreasing the scale causes the w aveform to be displayed larger.
RF:RF_PHASe:WRAP:DEGrees Sets or returns the number of degrees to wrap the RF_PHASe time domain trace.
RF:RF_PHASe:WRAP:STATE Sets or returns the state of the phase wrap control for the RF_PHASE time domain trace.
RF:RF_V_TIMe:BANDWidth
Sets or returns the RF versus time bandwidth as an NR3 value in Hz.
RF:SCAle This command specifies the overall vertical scale setting of the frequency domain window.
The lower limit is 0.1 dB/division. The upper limit is 100dB/division. The vertical scale is
adjustable in a 1–2–5 sequence.
RF:SPAN This command specifies the span setting. The span is the range of frequencies that can be
observed around the center frequency. This is the width of the frequency domain trace, w hich
is equal to the stop frequency minus the start frequency. The span maximum varies according
to the oscilloscope model; e ither 3GHz or 6GHz.
RF:SPANRbwratio This command specifies the ratio of the span to the resolution bandwidth (RBW) that will be
used when the RBW Mode is set to AUTO. (In order to set the RBW Mode to AUTO, use the
command RF:RBW:MODe.)
RF:SPECTRogram Clears the spectrogram.
2-56 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual