MDO3000 Programmer Manual.pdf - 第575页

Commands Listed in Alphabetical Order Related Commands CH<x>:SCAle , MA TH[1]:VER Tical:SCAle Arguments <NR3> is a floating point number that specifie s the gain in user units-per-divisio n. Examples REF4:VERTI…

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Commands Listed in Alphabetical Order
REF<x>:VERTi
cal:POSition
This command specifies the vertical position of the reference waveform specified
by <x>.
Increasing the position value of a waveform causes the waveform to move up,
and decreasing the position value causes the waveform to move down. Position
adjusts onl
y the display position of a waveform. The position value determines the
vertical graticule coordinate at which signal values are displayed. For example, if
the position for Reference 3 is set to 2.0, the signal represented by that reference
will be displayed at 2.0 divisions above the center of the screen.
Group
Vertical
Syntax
REF<x>:VERTical:POSition <NR3>
REF<x>:VERTical:POSition?
Related Commands
CH<x>:POSition,
MATH[1]:VERTical:POSition
Arguments
<NR3> is a floating point number that specifies the desired position, in divisions
from the center horiz
ontal graticule. The range is from -5.0 to 5.0 divisions.
Examples
REF2:VERTICAL:POSITION 1.3E+00 positions the Reference 2 input signal
1.3 divisions above the center horizontal graticule.
REF1:VERTICAL:POSITION? might return :REF1:VERTICAL:POSITION
-1.3000E+00
indicating that the current position of Reference 1 is 1.3 divisions
below the center horizontal graticule.
REF<x>:VERTical:SCAle
This command specifies the vertical scale for the reference waveform specified by
<x>. This setting controls the display only. 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.
Group
Vertical
Syntax
REF<x>:VERTical:SCAle <NR3>
REF<x>:VERTical:SCAle?
2-544 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Related Commands
CH<x>:SCAle,
MATH[1]:VERTical:SCAle
Arguments
<NR3> is a floating point number that specifies the gain in user units-per-division.
Examples
REF4:VERTICAL:SCALE 100E-03 sets the Reference 4 scale to 100 mV per
division.
REF4:VERTICAL:SCALE? might return :REF2:VERTICAL:SCALE
1.0000e+00
indicating that the current vertical scale setting for Reference 2 is
1 V per division.
REM (No Query Form)
Embeds a comment within programs as a means of internally documenting the
programs. The oscilloscope ignores these embedded comment lines.
Group
Miscellaneous
Syntax
REM <QS tring>
Arguments
<QString> is a string that can contain a maximum of 80 characters.
Examples
REM "This is a comment" is a comment string that the oscilloscope will
ignore.
RF:CLIPPing? (Query Only)
Returns a boolean indicating whether the RF input is “clipping” due to input
over/under-range detection.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
RF:CLIPPing?
Returns
1 or ON indicates that the RF input is clipping.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-545
Commands Listed in Alphabetical Order
0orOFFindicat
es that the RF input is not clipping.
Examples
RF:CLIPPING? might return 0, indicating that the RF input is not clipping.
RF:DETECTionmethod:MODe
This command specifies whether the RF detection within the oscilloscope occurs
automatically or manually. If you set the detection method mode to MANual, you
areabletousetherelated
RF:DETECTionmethod commands to specify detection
method options for the frequency domain traces (the options are
MINUSpeak,
SAMple,
PLUSpeak and AVErage).
The detection method is the internal calculation that decimates (reduces)a
long fr
equency domain waveform down to display resolution, by dividing the
waveform into intervals and choosing a single value to represent each interval
on screen.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
RF:DETECTionmethod:MODe {AUTO|MANual}
RF:DETECTionmethod:MODe?
Related Commands
RF:DETECTionmethod:RF_AVErage, RF:DETECTionmethod:RF_MAXHold,
RF:DETECTionmethod:RF_MINHold, RF:DETECTionmethod:RF_NORMal
Examples
RF:DETECTionmethod:MODe MANual sets the detection mode to manual.
RF:DETECTionmethod:MODe? might return AUTO, indicating that the RF
detection mode has been set to automatic.
RF:DETECTionmethod:RF_AVErage
This command specifies the detection method the oscilloscope should use when
acq
uiring an RF Average frequency domain trace.
In order to change the detection method, you must first change the detection
met
hod mode to
MANUAL using the command RF:DETECTionmethod:MODe.
The detection method is the internal calculation that decimates (reduces)a
lo
ng frequency domain waveform down to display resolution, by dividing the
2-546 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual